diff options
Diffstat (limited to 'include/linux')
163 files changed, 2876 insertions, 1995 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 137e4a3d89c5..cafdfb84ca28 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -26,6 +26,7 @@ #include <linux/resource_ext.h> #include <linux/device.h> #include <linux/property.h> +#include <linux/uuid.h> #ifndef _LINUX #define _LINUX @@ -457,7 +458,6 @@ struct acpi_osc_context { struct acpi_buffer ret; /* free by caller if success */ }; -acpi_status acpi_str_to_uuid(char *str, u8 *uuid); acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context); /* Indexes into _OSC Capabilities Buffer (DWORDs 2 & 3 are device-specific) */ @@ -741,7 +741,7 @@ static inline bool acpi_driver_match_device(struct device *dev, } static inline union acpi_object *acpi_evaluate_dsm(acpi_handle handle, - const u8 *uuid, + const guid_t *guid, int rev, int func, union acpi_object *argv4) { diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h new file mode 100644 index 000000000000..9af3c174c03a --- /dev/null +++ b/include/linux/arch_topology.h @@ -0,0 +1,17 @@ +/* + * include/linux/arch_topology.h - arch specific cpu topology information + */ +#ifndef _LINUX_ARCH_TOPOLOGY_H_ +#define _LINUX_ARCH_TOPOLOGY_H_ + +void topology_normalize_cpu_scale(void); + +struct device_node; +int topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu); + +struct sched_domain; +unsigned long topology_get_cpu_scale(struct sched_domain *sd, int cpu); + +void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity); + +#endif /* _LINUX_ARCH_TOPOLOGY_H_ */ diff --git a/include/linux/ata.h b/include/linux/ata.h index ad7d9ee89ff0..73fe18edfdaf 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -20,7 +20,7 @@ * * * libata documentation is available via 'make {ps|pdf}docs', - * as Documentation/DocBook/libata.* + * as Documentation/driver-api/libata.rst * * Hardware documentation available from http://www.t13.org/ * diff --git a/include/linux/bcm47xx_nvram.h b/include/linux/bcm47xx_nvram.h index 2793652fbf66..a414a2b53e41 100644 --- a/include/linux/bcm47xx_nvram.h +++ b/include/linux/bcm47xx_nvram.h @@ -8,6 +8,7 @@ #ifndef __BCM47XX_NVRAM_H #define __BCM47XX_NVRAM_H +#include <linux/errno.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/vmalloc.h> diff --git a/include/linux/bio.h b/include/linux/bio.h index d1b04b0e99cf..664a27da276d 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -118,7 +118,6 @@ static inline void *bio_data(struct bio *bio) /* * will die */ -#define bio_to_phys(bio) (page_to_phys(bio_page((bio))) + (unsigned long) bio_offset((bio))) #define bvec_to_phys(bv) (page_to_phys((bv)->bv_page) + (unsigned long) (bv)->bv_offset) /* @@ -373,8 +372,11 @@ static inline struct bio *bio_next_split(struct bio *bio, int sectors, return bio_split(bio, sectors, gfp, bs); } -extern struct bio_set *bioset_create(unsigned int, unsigned int); -extern struct bio_set *bioset_create_nobvec(unsigned int, unsigned int); +extern struct bio_set *bioset_create(unsigned int, unsigned int, int flags); +enum { + BIOSET_NEED_BVECS = BIT(0), + BIOSET_NEED_RESCUER = BIT(1), +}; extern void bioset_free(struct bio_set *); extern mempool_t *biovec_create_pool(int pool_entries); @@ -392,11 +394,6 @@ static inline struct bio *bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs) return bio_alloc_bioset(gfp_mask, nr_iovecs, fs_bio_set); } -static inline struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask) -{ - return bio_clone_bioset(bio, gfp_mask, fs_bio_set); -} - static inline struct bio *bio_kmalloc(gfp_t gfp_mask, unsigned int nr_iovecs) { return bio_alloc_bioset(gfp_mask, nr_iovecs, NULL); @@ -414,7 +411,13 @@ extern void bio_endio(struct bio *); static inline void bio_io_error(struct bio *bio) { - bio->bi_error = -EIO; + bio->bi_status = BLK_STS_IOERR; + bio_endio(bio); +} + +static inline void bio_wouldblock_error(struct bio *bio) +{ + bio->bi_status = BLK_STS_AGAIN; bio_endio(bio); } @@ -426,6 +429,7 @@ extern void bio_advance(struct bio *, unsigned); extern void bio_init(struct bio *bio, struct bio_vec *table, unsigned short max_vecs); +extern void bio_uninit(struct bio *); extern void bio_reset(struct bio *); void bio_chain(struct bio *, struct bio *); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index fcd641032f8d..14542308d25b 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -33,14 +33,12 @@ struct blk_mq_hw_ctx { struct blk_mq_ctx **ctxs; unsigned int nr_ctx; - wait_queue_t dispatch_wait; + wait_queue_entry_t dispatch_wait; atomic_t wait_index; struct blk_mq_tags *tags; struct blk_mq_tags *sched_tags; - struct srcu_struct queue_rq_srcu; - unsigned long queued; unsigned long run; #define BLK_MQ_MAX_DISPATCH_ORDER 7 @@ -62,6 +60,9 @@ struct blk_mq_hw_ctx { struct dentry *debugfs_dir; struct dentry *sched_debugfs_dir; #endif + + /* Must be the last member - see also blk_mq_hw_ctx_size(). */ + struct srcu_struct queue_rq_srcu[0]; }; struct blk_mq_tag_set { @@ -87,7 +88,8 @@ struct blk_mq_queue_data { bool last; }; -typedef int (queue_rq_fn)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *); +typedef blk_status_t (queue_rq_fn)(struct blk_mq_hw_ctx *, + const struct blk_mq_queue_data *); typedef enum blk_eh_timer_return (timeout_fn)(struct request *, bool); typedef int (init_hctx_fn)(struct blk_mq_hw_ctx *, void *, unsigned int); typedef void (exit_hctx_fn)(struct blk_mq_hw_ctx *, unsigned int); @@ -142,6 +144,8 @@ struct blk_mq_ops { init_request_fn *init_request; exit_request_fn *exit_request; reinit_request_fn *reinit_request; + /* Called from inside blk_get_request() */ + void (*initialize_rq_fn)(struct request *rq); map_queues_fn *map_queues; @@ -155,10 +159,6 @@ struct blk_mq_ops { }; enum { - BLK_MQ_RQ_QUEUE_OK = 0, /* queued fine */ - BLK_MQ_RQ_QUEUE_BUSY = 1, /* requeue IO for later */ - BLK_MQ_RQ_QUEUE_ERROR = 2, /* end IO with error */ - BLK_MQ_F_SHOULD_MERGE = 1 << 0, BLK_MQ_F_TAG_SHARED = 1 << 1, BLK_MQ_F_SG_MERGE = 1 << 2, @@ -204,10 +204,10 @@ enum { BLK_MQ_REQ_INTERNAL = (1 << 2), /* allocate internal/sched tag */ }; -struct request *blk_mq_alloc_request(struct request_queue *q, int rw, +struct request *blk_mq_alloc_request(struct request_queue *q, unsigned int op, unsigned int flags); -struct request *blk_mq_alloc_request_hctx(struct request_queue *q, int op, - unsigned int flags, unsigned int hctx_idx); +struct request *blk_mq_alloc_request_hctx(struct request_queue *q, + unsigned int op, unsigned int flags, unsigned int hctx_idx); struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag); enum { @@ -230,8 +230,8 @@ static inline u16 blk_mq_unique_tag_to_tag(u32 unique_tag) int blk_mq_request_started(struct request *rq); void blk_mq_start_request(struct request *rq); -void blk_mq_end_request(struct request *rq, int error); -void __blk_mq_end_request(struct request *rq, int error); +void blk_mq_end_request(struct request *rq, blk_status_t error); +void __blk_mq_end_request(struct request *rq, blk_status_t error); void blk_mq_requeue_request(struct request *rq, bool kick_requeue_list); void blk_mq_add_to_requeue_list(struct request *rq, bool at_head, @@ -247,6 +247,8 @@ void blk_mq_stop_hw_queues(struct request_queue *q); void blk_mq_start_hw_queues(struct request_queue *q); void blk_mq_start_stopped_hw_queue(struct blk_mq_hw_ctx *hctx, bool async); void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async); +void blk_mq_quiesce_queue(struct request_queue *q); +void blk_mq_unquiesce_queue(struct request_queue *q); void blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs); void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async); void blk_mq_run_hw_queues(struct request_queue *q, bool async); @@ -264,6 +266,8 @@ int blk_mq_reinit_tagset(struct blk_mq_tag_set *set); int blk_mq_map_queues(struct blk_mq_tag_set *set); void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues); +void blk_mq_quiesce_queue_nowait(struct request_queue *q); + /* * Driver command data is immediately after the request. So subtract request * size to get back to the original request, add request size to get the PDU. diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 61339bc44400..d2eb87c84d82 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -17,6 +17,27 @@ struct io_context; struct cgroup_subsys_state; typedef void (bio_end_io_t) (struct bio *); +/* + * Block error status values. See block/blk-core:blk_errors for the details. + */ +typedef u8 __bitwise blk_status_t; +#define BLK_STS_OK 0 +#define BLK_STS_NOTSUPP ((__force blk_status_t)1) +#define BLK_STS_TIMEOUT ((__force blk_status_t)2) +#define BLK_STS_NOSPC ((__force blk_status_t)3) +#define BLK_STS_TRANSPORT ((__force blk_status_t)4) +#define BLK_STS_TARGET ((__force blk_status_t)5) +#define BLK_STS_NEXUS ((__force blk_status_t)6) +#define BLK_STS_MEDIUM ((__force blk_status_t)7) +#define BLK_STS_PROTECTION ((__force blk_status_t)8) +#define BLK_STS_RESOURCE ((__force blk_status_t)9) +#define BLK_STS_IOERR ((__force blk_status_t)10) + +/* hack for device mapper, don't use elsewhere: */ +#define BLK_STS_DM_REQUEUE ((__force blk_status_t)11) + +#define BLK_STS_AGAIN ((__force blk_status_t)12) + struct blk_issue_stat { u64 stat; }; @@ -28,13 +49,14 @@ struct blk_issue_stat { struct bio { struct bio *bi_next; /* request queue link */ struct block_device *bi_bdev; - int bi_error; + blk_status_t bi_status; unsigned int bi_opf; /* bottom bits req flags, * top bits REQ_OP. Use * accessors. */ unsigned short bi_flags; /* status, etc and bvec pool number */ unsigned short bi_ioprio; + unsigned short bi_write_hint; struct bvec_iter bi_iter; @@ -205,6 +227,7 @@ enum req_flag_bits { /* command specific flags for REQ_OP_WRITE_ZEROES: */ __REQ_NOUNMAP, /* do not free blocks when zeroing */ + __REQ_NOWAIT, /* Don't wait if request will block */ __REQ_NR_BITS, /* stops here */ }; @@ -223,6 +246,7 @@ enum req_flag_bits { #define REQ_BACKGROUND (1ULL << __REQ_BACKGROUND) #define REQ_NOUNMAP (1ULL << __REQ_NOUNMAP) +#define REQ_NOWAIT (1ULL << __REQ_NOWAIT) #define REQ_FAILFAST_MASK \ (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ab92c4ea138b..25f6a0cb27d3 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -55,7 +55,7 @@ struct blk_stat_callback; */ #define BLKCG_MAX_POLS 3 -typedef void (rq_end_io_fn)(struct request *, int); +typedef void (rq_end_io_fn)(struct request *, blk_status_t); #define BLK_RL_SYNCFULL (1U << 0) #define BLK_RL_ASYNCFULL (1U << 1) @@ -225,6 +225,8 @@ struct request { unsigned int extra_len; /* length of alignment and padding */ + unsigned short write_hint; + unsigned long deadline; struct list_head timeout_list; @@ -391,6 +393,8 @@ struct request_queue { int nr_rqs[2]; /* # allocated [a]sync rqs */ int nr_rqs_elvpriv; /* # allocated rqs w/ elvpriv */ + atomic_t shared_hctx_restart; + struct blk_queue_stats *stats; struct rq_wb *rq_wb; @@ -410,8 +414,12 @@ struct request_queue { rq_timed_out_fn *rq_timed_out_fn; dma_drain_needed_fn *dma_drain_needed; lld_busy_fn *lld_busy_fn; + /* Called just after a request is allocated */ init_rq_fn *init_rq_fn; + /* Called just before a request is freed */ exit_rq_fn *exit_rq_fn; + /* Called from inside blk_get_request() */ + void (*initialize_rq_fn)(struct request *rq); const struct blk_mq_ops *mq_ops; @@ -586,6 +594,11 @@ struct request_queue { size_t cmd_size; void *rq_alloc_data; + + struct work_struct release_work; + +#define BLK_MAX_WRITE_HINTS 5 + u64 write_hints[BLK_MAX_WRITE_HINTS]; }; #define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */ @@ -618,6 +631,8 @@ struct request_queue { #define QUEUE_FLAG_STATS 27 /* track rq completion times */ #define QUEUE_FLAG_POLL_STATS 28 /* collecting stats for hybrid polling */ #define QUEUE_FLAG_REGISTERED 29 /* queue has been registered to a disk */ +#define QUEUE_FLAG_SCSI_PASSTHROUGH 30 /* queue supports SCSI commands */ +#define QUEUE_FLAG_QUIESCED 31 /* queue has been quiesced */ #define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_STACKABLE) | \ @@ -629,6 +644,13 @@ struct request_queue { (1 << QUEUE_FLAG_SAME_COMP) | \ (1 << QUEUE_FLAG_POLL)) +/* + * @q->queue_lock is set while a queue is being initialized. Since we know + * that no other threads access the queue object before @q->queue_lock has + * been set, it is safe to manipulate queue flags without holding the + * queue_lock if @q->queue_lock == NULL. See also blk_alloc_queue_node() and + * blk_init_allocated_queue(). + */ static inline void queue_lockdep_assert_held(struct request_queue *q) { if (q->queue_lock) @@ -708,10 +730,13 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q) #define blk_queue_secure_erase(q) \ (test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags)) #define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags) +#define blk_queue_scsi_passthrough(q) \ + test_bit(QUEUE_FLAG_SCSI_PASSTHROUGH, &(q)->queue_flags) #define blk_noretry_request(rq) \ ((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \ REQ_FAILFAST_DRIVER)) +#define blk_queue_quiesced(q) test_bit(QUEUE_FLAG_QUIESCED, &(q)->queue_flags) static inline bool blk_account_rq(struct request *rq) { @@ -810,7 +835,8 @@ static inline bool rq_mergeable(struct request *rq) static inline bool blk_write_same_mergeable(struct bio *a, struct bio *b) { - if (bio_data(a) == bio_data(b)) + if (bio_page(a) == bio_page(b) && + bio_offset(a) == bio_offset(b)) return true; return false; @@ -858,19 +884,6 @@ extern unsigned long blk_max_low_pfn, blk_max_pfn; #define BLK_DEFAULT_SG_TIMEOUT (60 * HZ) #define BLK_MIN_SG_TIMEOUT (7 * HZ) -#ifdef CONFIG_BOUNCE -extern int init_emergency_isa_pool(void); -extern void blk_queue_bounce(struct request_queue *q, struct bio **bio); -#else -static inline int init_emergency_isa_pool(void) -{ - return 0; -} -static inline void blk_queue_bounce(struct request_queue *q, struct bio **bio) -{ -} -#endif /* CONFIG_MMU */ - struct rq_map_data { struct page **pages; int page_order; @@ -929,7 +942,8 @@ extern void blk_rq_init(struct request_queue *q, struct request *rq); extern void blk_init_request_from_bio(struct request *req, struct bio *bio); extern void blk_put_request(struct request *); extern void __blk_put_request(struct request_queue *, struct request *); -extern struct request *blk_get_request(struct request_queue *, int, gfp_t); +extern struct request *blk_get_request(struct request_queue *, unsigned int op, + gfp_t gfp_mask); extern void blk_requeue_request(struct request_queue *, struct request *); extern int blk_lld_busy(struct request_queue *q); extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src, @@ -937,12 +951,11 @@ extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src, int (*bio_ctr)(struct bio *, struct bio *, void *), void *data); extern void blk_rq_unprep_clone(struct request *rq); -extern int blk_insert_cloned_request(struct request_queue *q, +extern blk_status_t blk_insert_cloned_request(struct request_queue *q, struct request *rq); extern int blk_rq_append_bio(struct request *rq, struct bio *bio); extern void blk_delay_queue(struct request_queue *, unsigned long); -extern void blk_queue_split(struct request_queue *, struct bio **, - struct bio_set *); +extern void blk_queue_split(struct request_queue *, struct bio **); extern void blk_recount_segments(struct request_queue *, struct bio *); extern int scsi_verify_blk_ioctl(struct block_device *, unsigned int); extern int scsi_cmd_blk_ioctl(struct block_device *, fmode_t, @@ -963,7 +976,6 @@ extern void __blk_run_queue(struct request_queue *q); extern void __blk_run_queue_uncond(struct request_queue *q); extern void blk_run_queue(struct request_queue *); extern void blk_run_queue_async(struct request_queue *q); -extern void blk_mq_quiesce_queue(struct request_queue *q); extern int blk_rq_map_user(struct request_queue *, struct request *, struct rq_map_data *, void __user *, unsigned long, gfp_t); @@ -977,6 +989,9 @@ extern void blk_execute_rq(struct request_queue *, struct gendisk *, extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *, struct request *, int, rq_end_io_fn *); +int blk_status_to_errno(blk_status_t status); +blk_status_t errno_to_blk_status(int errno); + bool blk_mq_poll(struct request_queue *q, blk_qc_t cookie); static inline struct request_queue *bdev_get_queue(struct block_device *bdev) @@ -1109,16 +1124,16 @@ extern struct request *blk_fetch_request(struct request_queue *q); * blk_end_request() for parts of the original function. * This prevents code duplication in drivers. */ -extern bool blk_update_request(struct request *rq, int error, +extern bool blk_update_request(struct request *rq, blk_status_t error, unsigned int nr_bytes); -extern void blk_finish_request(struct request *rq, int error); -extern bool blk_end_request(struct request *rq, int error, +extern void blk_finish_request(struct request *rq, blk_status_t error); +extern bool blk_end_request(struct request *rq, blk_status_t error, unsigned int nr_bytes); -extern void blk_end_request_all(struct request *rq, int error); -extern bool __blk_end_request(struct request *rq, int error, +extern void blk_end_request_all(struct request *rq, blk_status_t error); +extern bool __blk_end_request(struct request *rq, blk_status_t error, unsigned int nr_bytes); -extern void __blk_end_request_all(struct request *rq, int error); -extern bool __blk_end_request_cur(struct request *rq, int error); +extern void __blk_end_request_all(struct request *rq, blk_status_t error); +extern bool __blk_end_request_cur(struct request *rq, blk_status_t error); extern void blk_complete_request(struct request *); extern void __blk_complete_request(struct request *); @@ -1370,11 +1385,6 @@ enum blk_default_limits { #define blkdev_entry_to_request(entry) list_entry((entry), struct request, queuelist) -static inline unsigned long queue_bounce_pfn(struct request_queue *q) -{ - return q->limits.bounce_pfn; -} - static inline unsigned long queue_segment_boundary(struct request_queue *q) { return q->limits.seg_boundary_mask; @@ -1776,7 +1786,7 @@ struct blk_integrity_iter { const char *disk_name; }; -typedef int (integrity_processing_fn) (struct blk_integrity_iter *); +typedef blk_status_t (integrity_processing_fn) (struct blk_integrity_iter *); struct blk_integrity_profile { integrity_processing_fn *generate_fn; diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h index 21745946cae1..ec47101cb1bf 100644 --- a/include/linux/cgroup-defs.h +++ b/include/linux/cgroup-defs.h @@ -48,6 +48,7 @@ enum { CSS_ONLINE = (1 << 1), /* between ->css_online() and ->css_offline() */ CSS_RELEASED = (1 << 2), /* refcnt reached zero, released */ CSS_VISIBLE = (1 << 3), /* css is visible to userland */ + CSS_DYING = (1 << 4), /* css is dying */ }; /* bits in struct cgroup flags field */ diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index ed2573e149fa..710a005c6b7a 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -344,6 +344,26 @@ static inline bool css_tryget_online(struct cgroup_subsys_state *css) } /** + * css_is_dying - test whether the specified css is dying + * @css: target css + * + * Test whether @css is in the process of offlining or already offline. In + * most cases, ->css_online() and ->css_offline() callbacks should be + * enough; however, the actual offline operations are RCU delayed and this + * test returns %true also when @css is scheduled to be offlined. + * + * This is useful, for example, when the use case requires synchronous + * behavior with respect to cgroup removal. cgroup removal schedules css + * offlining but the css can seem alive while the operation is being + * delayed. If the delay affects user visible semantics, this test can be + * used to resolve the situation. + */ +static inline bool css_is_dying(struct cgroup_subsys_state *css) +{ + return !(css->flags & CSS_NO_REF) && percpu_ref_is_dying(&css->refcnt); +} + +/** * css_put - put a css reference * @css: target css * diff --git a/include/linux/cleancache.h b/include/linux/cleancache.h index fccf7f44139d..bbb3712dd892 100644 --- a/include/linux/cleancache.h +++ b/include/linux/cleancache.h @@ -27,7 +27,7 @@ struct cleancache_filekey { struct cleancache_ops { int (*init_fs)(size_t); - int (*init_shared_fs)(char *uuid, size_t); + int (*init_shared_fs)(uuid_t *uuid, size_t); int (*get_page)(int, struct cleancache_filekey, pgoff_t, struct page *); void (*put_page)(int, struct cleancache_filekey, diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index acc9ce05e5f0..a116926598fd 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -223,13 +223,4 @@ static inline void tick_setup_hrtimer_broadcast(void) { } #endif /* !CONFIG_GENERIC_CLOCKEVENTS */ -#define CLOCKEVENT_OF_DECLARE(name, compat, fn) \ - OF_DECLARE_1_RET(clkevt, name, compat, fn) - -#ifdef CONFIG_CLKEVT_PROBE -extern int clockevent_probe(void); -#else -static inline int clockevent_probe(void) { return 0; } -#endif - #endif /* _LINUX_CLOCKCHIPS_H */ diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index f2b10d9ebd04..a78cb1848e65 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -96,6 +96,7 @@ struct clocksource { void (*suspend)(struct clocksource *cs); void (*resume)(struct clocksource *cs); void (*mark_unstable)(struct clocksource *cs); + void (*tick_stable)(struct clocksource *cs); /* private: */ #ifdef CONFIG_CLOCKSOURCE_WATCHDOG @@ -249,16 +250,19 @@ extern int clocksource_mmio_init(void __iomem *, const char *, extern int clocksource_i8253_init(void); +#define TIMER_OF_DECLARE(name, compat, fn) \ + OF_DECLARE_1_RET(timer, name, compat, fn) + #define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \ - OF_DECLARE_1_RET(clksrc, name, compat, fn) + TIMER_OF_DECLARE(name, compat, fn) -#ifdef CONFIG_CLKSRC_PROBE -extern void clocksource_probe(void); +#ifdef CONFIG_TIMER_PROBE +extern void timer_probe(void); #else -static inline void clocksource_probe(void) {} +static inline void timer_probe(void) {} #endif -#define CLOCKSOURCE_ACPI_DECLARE(name, table_id, fn) \ - ACPI_DECLARE_PROBE_ENTRY(clksrc, name, table_id, 0, NULL, 0, fn) +#define TIMER_ACPI_DECLARE(name, table_id, fn) \ + ACPI_DECLARE_PROBE_ENTRY(timer, name, table_id, 0, NULL, 0, fn) #endif /* _LINUX_CLOCKSOURCE_H */ diff --git a/include/linux/compat.h b/include/linux/compat.h index 1c5f3152cbb5..425563c7647b 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -94,6 +94,10 @@ struct compat_itimerval { struct compat_timeval it_value; }; +struct itimerval; +int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *); +int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *); + struct compat_tms { compat_clock_t tms_utime; compat_clock_t tms_stime; @@ -128,6 +132,10 @@ struct compat_timex { compat_int_t:32; compat_int_t:32; compat_int_t:32; }; +struct timex; +int compat_get_timex(struct timex *, const struct compat_timex __user *); +int compat_put_timex(struct compat_timex __user *, const struct timex *); + #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) typedef struct { diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index de179993e039..d614c5ea1b5e 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -15,3 +15,11 @@ * with any version that can compile the kernel */ #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) + +/* + * GCC does not warn about unused static inline functions for + * -Wunused-function. This turns out to avoid the need for complex #ifdef + * directives. Suppress the warning in clang as well. + */ +#undef inline +#define inline inline __attribute__((unused)) notrace diff --git a/include/linux/compiler.h b/include/linux/compiler.h index f8110051188f..707242fdbb89 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -17,11 +17,7 @@ # define __release(x) __context__(x,-1) # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0) # define __percpu __attribute__((noderef, address_space(3))) -#ifdef CONFIG_SPARSE_RCU_POINTER # define __rcu __attribute__((noderef, address_space(4))) -#else /* CONFIG_SPARSE_RCU_POINTER */ -# define __rcu -#endif /* CONFIG_SPARSE_RCU_POINTER */ # define __private __attribute__((noderef)) extern void __chk_user_ptr(const volatile void __user *); extern void __chk_io_ptr(const volatile void __iomem *); diff --git a/include/linux/configfs.h b/include/linux/configfs.h index 2319b8c108e8..c96709049683 100644 --- a/include/linux/configfs.h +++ b/include/linux/configfs.h @@ -74,7 +74,8 @@ extern void config_item_init_type_name(struct config_item *item, const char *name, struct config_item_type *type); -extern struct config_item * config_item_get(struct config_item *); +extern struct config_item *config_item_get(struct config_item *); +extern struct config_item *config_item_get_unless_zero(struct config_item *); extern void config_item_put(struct config_item *); struct config_item_type { diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 035c16c9a505..d950dad5056a 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -263,11 +263,15 @@ static inline int coresight_timeout(void __iomem *addr, u32 offset, #endif #ifdef CONFIG_OF -extern struct coresight_platform_data *of_get_coresight_platform_data( - struct device *dev, struct device_node *node); +extern int of_coresight_get_cpu(const struct device_node *node); +extern struct coresight_platform_data * +of_get_coresight_platform_data(struct device *dev, + const struct device_node *node); #else +static inline int of_coresight_get_cpu(const struct device_node *node) +{ return 0; } static inline struct coresight_platform_data *of_get_coresight_platform_data( - struct device *dev, struct device_node *node) { return NULL; } + struct device *dev, const struct device_node *node) { return NULL; } #endif #ifdef CONFIG_PID_NS diff --git a/include/linux/cpu.h b/include/linux/cpu.h index f92081234afd..ca73bc1563f4 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -99,26 +99,32 @@ static inline void cpu_maps_update_done(void) extern struct bus_type cpu_subsys; #ifdef CONFIG_HOTPLUG_CPU -/* Stop CPUs going up and down. */ - -extern void cpu_hotplug_begin(void); -extern void cpu_hotplug_done(void); -extern void get_online_cpus(void); -extern void put_online_cpus(void); +extern void cpus_write_lock(void); +extern void cpus_write_unlock(void); +extern void cpus_read_lock(void); +extern void cpus_read_unlock(void); +extern void lockdep_assert_cpus_held(void); extern void cpu_hotplug_disable(void); extern void cpu_hotplug_enable(void); void clear_tasks_mm_cpumask(int cpu); int cpu_down(unsigned int cpu); -#else /* CONFIG_HOTPLUG_CPU */ - -static inline void cpu_hotplug_begin(void) {} -static inline void cpu_hotplug_done(void) {} -#define get_online_cpus() do { } while (0) -#define put_online_cpus() do { } while (0) -#define cpu_hotplug_disable() do { } while (0) -#define cpu_hotplug_enable() do { } while (0) -#endif /* CONFIG_HOTPLUG_CPU */ +#else /* CONFIG_HOTPLUG_CPU */ + +static inline void cpus_write_lock(void) { } +static inline void cpus_write_unlock(void) { } +static inline void cpus_read_lock(void) { } +static inline void cpus_read_unlock(void) { } +static inline void lockdep_assert_cpus_held(void) { } +static inline void cpu_hotplug_disable(void) { } +static inline void cpu_hotplug_enable(void) { } +#endif /* !CONFIG_HOTPLUG_CPU */ + +/* Wrappers which go away once all code is converted */ +static inline void cpu_hotplug_begin(void) { cpus_write_lock(); } +static inline void cpu_hotplug_done(void) { cpus_write_unlock(); } +static inline void get_online_cpus(void) { cpus_read_lock(); } +static inline void put_online_cpus(void) { cpus_read_unlock(); } #ifdef CONFIG_PM_SLEEP_SMP extern int freeze_secondary_cpus(int primary); diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index a5ce0bbeadb5..905117bd5012 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -883,6 +883,8 @@ static inline bool policy_has_boost_freq(struct cpufreq_policy *policy) } #endif +extern unsigned int arch_freq_get_on_cpu(int cpu); + /* the following are really really optional */ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; extern struct freq_attr cpufreq_freq_attr_scaling_boost_freqs; diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 0f2a80377520..b56573bf440d 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -58,7 +58,6 @@ enum cpuhp_state { CPUHP_XEN_EVTCHN_PREPARE, CPUHP_ARM_SHMOBILE_SCU_PREPARE, CPUHP_SH_SH3X_PREPARE, - CPUHP_BLK_MQ_PREPARE, CPUHP_NET_FLOW_PREPARE, CPUHP_TOPOLOGY_PREPARE, CPUHP_NET_IUCV_PREPARE, @@ -124,6 +123,7 @@ enum cpuhp_state { CPUHP_AP_ONLINE_IDLE, CPUHP_AP_SMPBOOT_THREADS, CPUHP_AP_X86_VDSO_VMA_ONLINE, + CPUHP_AP_IRQ_AFFINITY_ONLINE, CPUHP_AP_PERF_ONLINE, CPUHP_AP_PERF_X86_ONLINE, CPUHP_AP_PERF_X86_UNCORE_ONLINE, @@ -153,6 +153,11 @@ int __cpuhp_setup_state(enum cpuhp_state state, const char *name, bool invoke, int (*startup)(unsigned int cpu), int (*teardown)(unsigned int cpu), bool multi_instance); +int __cpuhp_setup_state_cpuslocked(enum cpuhp_state state, const char *name, + bool invoke, + int (*startup)(unsigned int cpu), + int (*teardown)(unsigned int cpu), + bool multi_instance); /** * cpuhp_setup_state - Setup hotplug state callbacks with calling the callbacks * @state: The state for which the calls are installed @@ -171,6 +176,15 @@ static inline int cpuhp_setup_state(enum cpuhp_state state, return __cpuhp_setup_state(state, name, true, startup, teardown, false); } +static inline int cpuhp_setup_state_cpuslocked(enum cpuhp_state state, + const char *name, + int (*startup)(unsigned int cpu), + int (*teardown)(unsigned int cpu)) +{ + return __cpuhp_setup_state_cpuslocked(state, name, true, startup, + teardown, false); +} + /** * cpuhp_setup_state_nocalls - Setup hotplug state callbacks without calling the * callbacks @@ -191,6 +205,15 @@ static inline int cpuhp_setup_state_nocalls(enum cpuhp_state state, false); } +static inline int cpuhp_setup_state_nocalls_cpuslocked(enum cpuhp_state state, + const char *name, + int (*startup)(unsigned int cpu), + int (*teardown)(unsigned int cpu)) +{ + return __cpuhp_setup_state_cpuslocked(state, name, false, startup, + teardown, false); +} + /** * cpuhp_setup_state_multi - Add callbacks for multi state * @state: The state for which the calls are installed @@ -217,6 +240,8 @@ static inline int cpuhp_setup_state_multi(enum cpuhp_state state, int __cpuhp_state_add_instance(enum cpuhp_state state, struct hlist_node *node, bool invoke); +int __cpuhp_state_add_instance_cpuslocked(enum cpuhp_state state, + struct hlist_node *node, bool invoke); /** * cpuhp_state_add_instance - Add an instance for a state and invoke startup @@ -249,7 +274,15 @@ static inline int cpuhp_state_add_instance_nocalls(enum cpuhp_state state, return __cpuhp_state_add_instance(state, node, false); } +static inline int +cpuhp_state_add_instance_nocalls_cpuslocked(enum cpuhp_state state, + struct hlist_node *node) +{ + return __cpuhp_state_add_instance_cpuslocked(state, node, false); +} + void __cpuhp_remove_state(enum cpuhp_state state, bool invoke); +void __cpuhp_remove_state_cpuslocked(enum cpuhp_state state, bool invoke); /** * cpuhp_remove_state - Remove hotplug state callbacks and invoke the teardown @@ -273,6 +306,11 @@ static inline void cpuhp_remove_state_nocalls(enum cpuhp_state state) __cpuhp_remove_state(state, false); } +static inline void cpuhp_remove_state_nocalls_cpuslocked(enum cpuhp_state state) +{ + __cpuhp_remove_state_cpuslocked(state, false); +} + /** * cpuhp_remove_multi_state - Remove hotplug multi state callback * @state: The state for which the calls are removed diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 2404ad238c0b..4bf4479a3a80 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -236,6 +236,23 @@ unsigned int cpumask_local_spread(unsigned int i, int node); (cpu) = cpumask_next_zero((cpu), (mask)), \ (cpu) < nr_cpu_ids;) +extern int cpumask_next_wrap(int n, const struct cpumask *mask, int start, bool wrap); + +/** + * for_each_cpu_wrap - iterate over every cpu in a mask, starting at a specified location + * @cpu: the (optionally unsigned) integer iterator + * @mask: the cpumask poiter + * @start: the start location + * + * The implementation does not assume any bit in @mask is set (including @start). + * + * After the loop, cpu is >= nr_cpu_ids. + */ +#define for_each_cpu_wrap(cpu, mask, start) \ + for ((cpu) = cpumask_next_wrap((start)-1, (mask), (start), false); \ + (cpu) < nr_cpumask_bits; \ + (cpu) = cpumask_next_wrap((cpu), (mask), (start), true)) + /** * for_each_cpu_and - iterate over every cpu in both masks * @cpu: the (optionally unsigned) integer iterator @@ -276,6 +293,12 @@ static inline void cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp) set_bit(cpumask_check(cpu), cpumask_bits(dstp)); } +static inline void __cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp) +{ + __set_bit(cpumask_check(cpu), cpumask_bits(dstp)); +} + + /** * cpumask_clear_cpu - clear a cpu in a cpumask * @cpu: cpu number (< nr_cpu_ids) @@ -286,6 +309,11 @@ static inline void cpumask_clear_cpu(int cpu, struct cpumask *dstp) clear_bit(cpumask_check(cpu), cpumask_bits(dstp)); } +static inline void __cpumask_clear_cpu(int cpu, struct cpumask *dstp) +{ + __clear_bit(cpumask_check(cpu), cpumask_bits(dstp)); +} + /** * cpumask_test_cpu - test for a cpu in a cpumask * @cpu: cpu number (< nr_cpu_ids) diff --git a/include/linux/crc4.h b/include/linux/crc4.h new file mode 100644 index 000000000000..8f739f1d794f --- /dev/null +++ b/include/linux/crc4.h @@ -0,0 +1,8 @@ +#ifndef _LINUX_CRC4_H +#define _LINUX_CRC4_H + +#include <linux/types.h> + +extern uint8_t crc4(uint8_t c, uint64_t x, int bits); + +#endif /* _LINUX_CRC4_H */ diff --git a/include/linux/cred.h b/include/linux/cred.h index b03e7d049a64..c728d515e5e2 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -1,4 +1,4 @@ -/* Credentials management - see Documentation/security/credentials.txt +/* Credentials management - see Documentation/security/credentials.rst * * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h index 9174b0d28582..aa86e6d8c1aa 100644 --- a/include/linux/debugfs.h +++ b/include/linux/debugfs.h @@ -9,7 +9,7 @@ * 2 as published by the Free Software Foundation. * * debugfs is for people to use instead of /proc or /sys. - * See Documentation/DocBook/filesystems for more details. + * See Documentation/filesystems/ for more details. */ #ifndef _DEBUGFS_H_ diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index f4c639c0c362..456da5017b32 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -72,9 +72,9 @@ typedef void (*dm_release_clone_request_fn) (struct request *clone); * 2 : The target wants to push back the io */ typedef int (*dm_endio_fn) (struct dm_target *ti, - struct bio *bio, int error); + struct bio *bio, blk_status_t *error); typedef int (*dm_request_endio_fn) (struct dm_target *ti, - struct request *clone, int error, + struct request *clone, blk_status_t error, union map_info *map_context); typedef void (*dm_presuspend_fn) (struct dm_target *ti); diff --git a/include/linux/device.h b/include/linux/device.h index 9ef518af5515..6baa1238f158 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -66,7 +66,6 @@ extern void bus_remove_file(struct bus_type *, struct bus_attribute *); * @name: The name of the bus. * @dev_name: Used for subsystems to enumerate devices like ("foo%u", dev->id). * @dev_root: Default device to use as the parent. - * @dev_attrs: Default attributes of the devices on the bus. * @bus_groups: Default attributes of the bus. * @dev_groups: Default attributes of the devices on the bus. * @drv_groups: Default attributes of the device drivers on the bus. @@ -112,7 +111,6 @@ struct bus_type { const char *name; const char *dev_name; struct device *dev_root; - struct device_attribute *dev_attrs; /* use dev_groups instead */ const struct attribute_group **bus_groups; const struct attribute_group **dev_groups; const struct attribute_group **drv_groups; @@ -365,7 +363,6 @@ int subsys_virtual_register(struct bus_type *subsys, * struct class - device classes * @name: Name of the class. * @owner: The module owner. - * @class_attrs: Default attributes of this class. * @class_groups: Default attributes of this class. * @dev_groups: Default attributes of the devices that belong to the class. * @dev_kobj: The kobject that represents this class and links it into the hierarchy. @@ -394,7 +391,6 @@ struct class { const char *name; struct module *owner; - struct class_attribute *class_attrs; const struct attribute_group **class_groups; const struct attribute_group **dev_groups; struct kobject *dev_kobj; @@ -465,8 +461,6 @@ struct class_attribute { const char *buf, size_t count); }; -#define CLASS_ATTR(_name, _mode, _show, _store) \ - struct class_attribute class_attr_##_name = __ATTR(_name, _mode, _show, _store) #define CLASS_ATTR_RW(_name) \ struct class_attribute class_attr_##_name = __ATTR_RW(_name) #define CLASS_ATTR_RO(_name) \ @@ -879,6 +873,8 @@ struct dev_links_info { * * @offline_disabled: If set, the device is permanently online. * @offline: Set after successful invocation of bus type's .offline(). + * @of_node_reused: Set if the device-tree node is shared with an ancestor + * device. * * At the lowest level, every device in a Linux system is represented by an * instance of struct device. The device structure contains the information @@ -966,6 +962,7 @@ struct device { bool offline_disabled:1; bool offline:1; + bool of_node_reused:1; }; static inline struct device *kobj_to_dev(struct kobject *kobj) @@ -1144,6 +1141,7 @@ extern int device_offline(struct device *dev); extern int device_online(struct device *dev); extern void set_primary_fwnode(struct device *dev, struct fwnode_handle *fwnode); extern void set_secondary_fwnode(struct device *dev, struct fwnode_handle *fwnode); +void device_set_of_node_from_dev(struct device *dev, const struct device *dev2); static inline int dev_num_vf(struct device *dev) { diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h index 4eac2670bfa1..92f20832fd28 100644 --- a/include/linux/dma-iommu.h +++ b/include/linux/dma-iommu.h @@ -78,6 +78,7 @@ void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list); struct iommu_domain; struct msi_msg; +struct device; static inline int iommu_dma_init(void) { diff --git a/include/linux/dmi.h b/include/linux/dmi.h index 5e9c74cf8894..9bbf21a516e4 100644 --- a/include/linux/dmi.h +++ b/include/linux/dmi.h @@ -136,7 +136,7 @@ static inline int dmi_name_in_vendors(const char *s) { return 0; } static inline int dmi_name_in_serial(const char *s) { return 0; } #define dmi_available 0 static inline int dmi_walk(void (*decode)(const struct dmi_header *, void *), - void *private_data) { return -1; } + void *private_data) { return -ENXIO; } static inline bool dmi_match(enum dmi_field f, const char *str) { return false; } static inline void dmi_memdev_name(u16 handle, const char **bank, diff --git a/include/linux/efi.h b/include/linux/efi.h index ec36f42a2add..8269bcb8ccf7 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -137,6 +137,18 @@ struct efi_boot_memmap { #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000 #define EFI_CAPSULE_INITIATE_RESET 0x00040000 +struct capsule_info { + efi_capsule_header_t header; + int reset_type; + long index; + size_t count; + size_t total_size; + phys_addr_t *pages; + size_t page_bytes_remain; +}; + +int __efi_capsule_setup_info(struct capsule_info *cap_info); + /* * Allocation types for calls to boottime->allocate_pages. */ @@ -1403,7 +1415,7 @@ extern int efi_capsule_supported(efi_guid_t guid, u32 flags, size_t size, int *reset); extern int efi_capsule_update(efi_capsule_header_t *capsule, - struct page **pages); + phys_addr_t *pages); #ifdef CONFIG_EFI_RUNTIME_MAP int efi_runtime_map_init(struct kobject *); diff --git a/include/linux/elevator.h b/include/linux/elevator.h index 9ec5e22846e0..5bc8f8682a3e 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -104,8 +104,9 @@ struct elevator_mq_ops { int (*request_merge)(struct request_queue *q, struct request **, struct bio *); void (*request_merged)(struct request_queue *, struct request *, enum elv_merge); void (*requests_merged)(struct request_queue *, struct request *, struct request *); - struct request *(*get_request)(struct request_queue *, unsigned int, struct blk_mq_alloc_data *); - void (*put_request)(struct request *); + void (*limit_depth)(unsigned int, struct blk_mq_alloc_data *); + void (*prepare_request)(struct request *, struct bio *bio); + void (*finish_request)(struct request *); void (*insert_requests)(struct blk_mq_hw_ctx *, struct list_head *, bool); struct request *(*dispatch_request)(struct blk_mq_hw_ctx *); bool (*has_work)(struct blk_mq_hw_ctx *); @@ -114,8 +115,6 @@ struct elevator_mq_ops { void (*requeue_request)(struct request *); struct request *(*former_request)(struct request_queue *, struct request *); struct request *(*next_request)(struct request_queue *, struct request *); - int (*get_rq_priv)(struct request_queue *, struct request *, struct bio *); - void (*put_rq_priv)(struct request_queue *, struct request *); void (*init_icq)(struct io_cq *); void (*exit_icq)(struct io_cq *); }; @@ -153,7 +152,7 @@ struct elevator_type #endif /* managed by elevator core */ - char icq_cache_name[ELV_NAME_MAX + 5]; /* elvname + "_io_cq" */ + char icq_cache_name[ELV_NAME_MAX + 6]; /* elvname + "_io_cq" */ struct list_head list; }; diff --git a/include/linux/eventfd.h b/include/linux/eventfd.h index ff0b981f078e..9e4befd95bc7 100644 --- a/include/linux/eventfd.h +++ b/include/linux/eventfd.h @@ -37,7 +37,7 @@ struct eventfd_ctx *eventfd_ctx_fdget(int fd); struct eventfd_ctx *eventfd_ctx_fileget(struct file *file); __u64 eventfd_signal(struct eventfd_ctx *ctx, __u64 n); ssize_t eventfd_ctx_read(struct eventfd_ctx *ctx, int no_wait, __u64 *cnt); -int eventfd_ctx_remove_wait_queue(struct eventfd_ctx *ctx, wait_queue_t *wait, +int eventfd_ctx_remove_wait_queue(struct eventfd_ctx *ctx, wait_queue_entry_t *wait, __u64 *cnt); #else /* CONFIG_EVENTFD */ @@ -73,7 +73,7 @@ static inline ssize_t eventfd_ctx_read(struct eventfd_ctx *ctx, int no_wait, } static inline int eventfd_ctx_remove_wait_queue(struct eventfd_ctx *ctx, - wait_queue_t *wait, __u64 *cnt) + wait_queue_entry_t *wait, __u64 *cnt) { return -ENOSYS; } diff --git a/include/linux/fs.h b/include/linux/fs.h index 803e5a9b2654..771fe1131467 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2,7 +2,7 @@ #define _LINUX_FS_H #include <linux/linkage.h> -#include <linux/wait.h> +#include <linux/wait_bit.h> #include <linux/kdev_t.h> #include <linux/dcache.h> #include <linux/path.h> @@ -20,6 +20,7 @@ #include <linux/rwsem.h> #include <linux/capability.h> #include <linux/semaphore.h> +#include <linux/fcntl.h> #include <linux/fiemap.h> #include <linux/rculist_bl.h> #include <linux/atomic.h> @@ -30,6 +31,7 @@ #include <linux/percpu-rwsem.h> #include <linux/workqueue.h> #include <linux/delayed_call.h> +#include <linux/uuid.h> #include <asm/byteorder.h> #include <uapi/linux/fs.h> @@ -142,6 +144,9 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset, /* File was opened by fanotify and shouldn't generate fanotify events */ #define FMODE_NONOTIFY ((__force fmode_t)0x4000000) +/* File is capable of returning -EAGAIN if AIO will block */ +#define FMODE_AIO_NOWAIT ((__force fmode_t)0x8000000) + /* * Flag for rw_copy_check_uvector and compat_rw_copy_check_uvector * that indicates that they should check the contents of the iovec are @@ -261,6 +266,18 @@ struct page; struct address_space; struct writeback_control; +/* + * Write life time hint values. + */ +enum rw_hint { + WRITE_LIFE_NOT_SET = 0, + WRITE_LIFE_NONE = RWH_WRITE_LIFE_NONE, + WRITE_LIFE_SHORT = RWH_WRITE_LIFE_SHORT, + WRITE_LIFE_MEDIUM = RWH_WRITE_LIFE_MEDIUM, + WRITE_LIFE_LONG = RWH_WRITE_LIFE_LONG, + WRITE_LIFE_EXTREME = RWH_WRITE_LIFE_EXTREME, +}; + #define IOCB_EVENTFD (1 << 0) #define IOCB_APPEND (1 << 1) #define IOCB_DIRECT (1 << 2) @@ -268,6 +285,7 @@ struct writeback_control; #define IOCB_DSYNC (1 << 4) #define IOCB_SYNC (1 << 5) #define IOCB_WRITE (1 << 6) +#define IOCB_NOWAIT (1 << 7) struct kiocb { struct file *ki_filp; @@ -275,6 +293,7 @@ struct kiocb { void (*ki_complete)(struct kiocb *iocb, long ret, long ret2); void *private; int ki_flags; + enum rw_hint ki_hint; }; static inline bool is_sync_kiocb(struct kiocb *kiocb) @@ -282,16 +301,6 @@ static inline bool is_sync_kiocb(struct kiocb *kiocb) return kiocb->ki_complete == NULL; } -static inline int iocb_flags(struct file *file); - -static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) -{ - *kiocb = (struct kiocb) { - .ki_filp = filp, - .ki_flags = iocb_flags(filp), - }; -} - /* * "descriptor" for what we're up to with a read. * This allows us to use the same read code yet @@ -592,6 +601,7 @@ struct inode { spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; unsigned int i_blkbits; + enum rw_hint i_write_hint; blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED @@ -846,6 +856,7 @@ struct file { * Must not be taken from IRQ context. */ spinlock_t f_lock; + enum rw_hint f_write_hint; atomic_long_t f_count; unsigned int f_flags; fmode_t f_mode; @@ -1021,8 +1032,6 @@ struct file_lock_context { #define OFFT_OFFSET_MAX INT_LIMIT(off_t) #endif -#include <linux/fcntl.h> - extern void send_sigio(struct fown_struct *fown, int fd, int band); /* @@ -1328,8 +1337,8 @@ struct super_block { struct sb_writers s_writers; - char s_id[32]; /* Informational name */ - u8 s_uuid[16]; /* UUID */ + char s_id[32]; /* Informational name */ + uuid_t s_uuid; /* UUID */ void *s_fs_info; /* Filesystem private info */ unsigned int s_max_links; @@ -1873,6 +1882,25 @@ static inline bool HAS_UNMAPPED_ID(struct inode *inode) return !uid_valid(inode->i_uid) || !gid_valid(inode->i_gid); } +static inline enum rw_hint file_write_hint(struct file *file) +{ + if (file->f_write_hint != WRITE_LIFE_NOT_SET) + return file->f_write_hint; + + return file_inode(file)->i_write_hint; +} + +static inline int iocb_flags(struct file *file); + +static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp) +{ + *kiocb = (struct kiocb) { + .ki_filp = filp, + .ki_flags = iocb_flags(filp), + .ki_hint = file_write_hint(filp), + }; +} + /* * Inode state bits. Protected by inode->i_lock * @@ -2517,6 +2545,8 @@ extern int filemap_fdatawait(struct address_space *); extern void filemap_fdatawait_keep_errors(struct address_space *); extern int filemap_fdatawait_range(struct address_space *, loff_t lstart, loff_t lend); +extern bool filemap_range_has_page(struct address_space *, loff_t lstart, + loff_t lend); extern int filemap_write_and_wait(struct address_space *mapping); extern int filemap_write_and_wait_range(struct address_space *mapping, loff_t lstart, loff_t lend); @@ -2843,7 +2873,7 @@ enum { DIO_SKIP_DIO_COUNT = 0x08, }; -void dio_end_io(struct bio *bio, int error); +void dio_end_io(struct bio *bio); ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, struct block_device *bdev, struct iov_iter *iter, @@ -3056,6 +3086,25 @@ static inline int iocb_flags(struct file *file) return res; } +static inline int kiocb_set_rw_flags(struct kiocb *ki, int flags) +{ + if (unlikely(flags & ~RWF_SUPPORTED)) + return -EOPNOTSUPP; + + if (flags & RWF_NOWAIT) { + if (!(ki->ki_filp->f_mode & FMODE_AIO_NOWAIT)) + return -EOPNOTSUPP; + ki->ki_flags |= IOCB_NOWAIT; + } + if (flags & RWF_HIPRI) + ki->ki_flags |= IOCB_HIPRI; + if (flags & RWF_DSYNC) + ki->ki_flags |= IOCB_DSYNC; + if (flags & RWF_SYNC) + ki->ki_flags |= (IOCB_DSYNC | IOCB_SYNC); + return 0; +} + static inline ino_t parent_ino(struct dentry *dentry) { ino_t res; diff --git a/include/linux/fsi.h b/include/linux/fsi.h index 273cbf6400ea..141fd38d061f 100644 --- a/include/linux/fsi.h +++ b/include/linux/fsi.h @@ -21,8 +21,18 @@ struct fsi_device { struct device dev; u8 engine_type; u8 version; + u8 unit; + struct fsi_slave *slave; + uint32_t addr; + uint32_t size; }; +extern int fsi_device_read(struct fsi_device *dev, uint32_t addr, + void *val, size_t size); +extern int fsi_device_write(struct fsi_device *dev, uint32_t addr, + const void *val, size_t size); +extern int fsi_device_peek(struct fsi_device *dev, void *val); + struct fsi_device_id { u8 engine_type; u8 version; @@ -36,7 +46,6 @@ struct fsi_device_id { #define FSI_DEVICE_VERSIONED(t, v) \ .engine_type = (t), .version = (v), - struct fsi_driver { struct device_driver drv; const struct fsi_device_id *id_table; @@ -45,6 +54,30 @@ struct fsi_driver { #define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev) #define to_fsi_drv(drvp) container_of(drvp, struct fsi_driver, drv) +extern int fsi_driver_register(struct fsi_driver *fsi_drv); +extern void fsi_driver_unregister(struct fsi_driver *fsi_drv); + +/* module_fsi_driver() - Helper macro for drivers that don't do + * anything special in module init/exit. This eliminates a lot of + * boilerplate. Each module may only use this macro once, and + * calling it replaces module_init() and module_exit() + */ +#define module_fsi_driver(__fsi_driver) \ + module_driver(__fsi_driver, fsi_driver_register, \ + fsi_driver_unregister) + +/* direct slave API */ +extern int fsi_slave_claim_range(struct fsi_slave *slave, + uint32_t addr, uint32_t size); +extern void fsi_slave_release_range(struct fsi_slave *slave, + uint32_t addr, uint32_t size); +extern int fsi_slave_read(struct fsi_slave *slave, uint32_t addr, + void *val, size_t size); +extern int fsi_slave_write(struct fsi_slave *slave, uint32_t addr, + const void *val, size_t size); + + + extern struct bus_type fsi_bus_type; #endif /* LINUX_FSI_H */ diff --git a/include/linux/genhd.h b/include/linux/genhd.h index acff9437e5c3..e619fae2f037 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -219,12 +219,6 @@ static inline struct gendisk *part_to_disk(struct hd_struct *part) return NULL; } -static inline int blk_part_pack_uuid(const u8 *uuid_str, u8 *to) -{ - uuid_be_to_bin(uuid_str, (uuid_be *)to); - return 0; -} - static inline int disk_max_parts(struct gendisk *disk) { if (disk->flags & GENHD_FL_EXT_DEVT) @@ -736,11 +730,6 @@ static inline dev_t blk_lookup_devt(const char *name, int partno) dev_t devt = MKDEV(0, 0); return devt; } - -static inline int blk_part_pack_uuid(const u8 *uuid_str, u8 *to) -{ - return -EINVAL; -} #endif /* CONFIG_BLOCK */ #endif /* _LINUX_GENHD_H */ diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 2b1a44f5bdb6..a89d37e8b387 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -41,7 +41,7 @@ struct vm_area_struct; #define ___GFP_WRITE 0x800000u #define ___GFP_KSWAPD_RECLAIM 0x1000000u #ifdef CONFIG_LOCKDEP -#define ___GFP_NOLOCKDEP 0x4000000u +#define ___GFP_NOLOCKDEP 0x2000000u #else #define ___GFP_NOLOCKDEP 0 #endif diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h index c0d712d22b07..f738d50cc17d 100644 --- a/include/linux/gpio/machine.h +++ b/include/linux/gpio/machine.h @@ -56,7 +56,14 @@ struct gpiod_lookup_table { .flags = _flags, \ } +#ifdef CONFIG_GPIOLIB void gpiod_add_lookup_table(struct gpiod_lookup_table *table); void gpiod_remove_lookup_table(struct gpiod_lookup_table *table); +#else +static inline +void gpiod_add_lookup_table(struct gpiod_lookup_table *table) {} +static inline +void gpiod_remove_lookup_table(struct gpiod_lookup_table *table) {} +#endif #endif /* __LINUX_GPIO_MACHINE_H */ diff --git a/include/linux/hashtable.h b/include/linux/hashtable.h index 661e5c2a8e2a..082dc1bd0801 100644 --- a/include/linux/hashtable.h +++ b/include/linux/hashtable.h @@ -167,7 +167,6 @@ static inline void hash_del_rcu(struct hlist_node *node) /** * hash_for_each_possible_rcu - iterate over all possible objects hashing to the * same bucket in an rcu enabled hashtable - * in a rcu enabled hashtable * @name: hashtable to iterate * @obj: the type * to use as a loop cursor for each entry * @member: the name of the hlist_node within the struct diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h index f32d7c392c1e..fc7aae64dcde 100644 --- a/include/linux/hid-sensor-hub.h +++ b/include/linux/hid-sensor-hub.h @@ -233,12 +233,14 @@ struct hid_sensor_common { atomic_t user_requested_state; int poll_interval; int raw_hystersis; + int latency_ms; struct iio_trigger *trigger; int timestamp_ns_scale; struct hid_sensor_hub_attribute_info poll; struct hid_sensor_hub_attribute_info report_state; struct hid_sensor_hub_attribute_info power_state; struct hid_sensor_hub_attribute_info sensitivity; + struct hid_sensor_hub_attribute_info report_latency; struct work_struct work; }; @@ -276,5 +278,8 @@ s32 hid_sensor_read_poll_value(struct hid_sensor_common *st); int64_t hid_sensor_convert_timestamp(struct hid_sensor_common *st, int64_t raw_value); +bool hid_sensor_batch_mode_supported(struct hid_sensor_common *st); +int hid_sensor_set_report_latency(struct hid_sensor_common *st, int latency); +int hid_sensor_get_report_latency(struct hid_sensor_common *st); #endif diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h index 761f86242473..76033e0420a7 100644 --- a/include/linux/hid-sensor-ids.h +++ b/include/linux/hid-sensor-ids.h @@ -90,6 +90,8 @@ #define HID_USAGE_SENSOR_ORIENT_TILT_Z 0x200481 #define HID_USAGE_SENSOR_DEVICE_ORIENTATION 0x20008A +#define HID_USAGE_SENSOR_RELATIVE_ORIENTATION 0x20008E +#define HID_USAGE_SENSOR_GEOMAGNETIC_ORIENTATION 0x2000C1 #define HID_USAGE_SENSOR_ORIENT_ROTATION_MATRIX 0x200482 #define HID_USAGE_SENSOR_ORIENT_QUATERNION 0x200483 #define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX 0x200484 @@ -150,6 +152,9 @@ #define HID_USAGE_SENSOR_PROP_REPORT_STATE 0x200316 #define HID_USAGE_SENSOR_PROY_POWER_STATE 0x200319 +/* Batch mode selectors */ +#define HID_USAGE_SENSOR_PROP_REPORT_LATENCY 0x20031B + /* Per data field properties */ #define HID_USAGE_SENSOR_DATA_MOD_NONE 0x00 #define HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS 0x1000 diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 8c5b10eb7265..255edd5e7a74 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -452,11 +452,11 @@ static inline u64 hrtimer_forward_now(struct hrtimer *timer, } /* Precise sleep: */ -extern long hrtimer_nanosleep(struct timespec64 *rqtp, - struct timespec __user *rmtp, + +extern int nanosleep_copyout(struct restart_block *, struct timespec *); +extern long hrtimer_nanosleep(const struct timespec64 *rqtp, const enum hrtimer_mode mode, const clockid_t clockid); -extern long hrtimer_nanosleep_restart(struct restart_block *restart_block); extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, struct task_struct *tsk); diff --git a/include/linux/i2c/twl4030-madc.h b/include/linux/i2c/twl4030-madc.h deleted file mode 100644 index 1c0134dd3271..000000000000 --- a/include/linux/i2c/twl4030-madc.h +++ /dev/null @@ -1,147 +0,0 @@ -/* - * twl4030_madc.h - Header for TWL4030 MADC - * - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ - * J Keerthy <j-keerthy@ti.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - * - */ - -#ifndef _TWL4030_MADC_H -#define _TWL4030_MADC_H - -struct twl4030_madc_conversion_method { - u8 sel; - u8 avg; - u8 rbase; - u8 ctrl; -}; - -#define TWL4030_MADC_MAX_CHANNELS 16 - - -/* - * twl4030_madc_request- madc request packet for channel conversion - * @channels: 16 bit bitmap for individual channels - * @do_avgP: sample the input channel for 4 consecutive cycles - * @method: RT, SW1, SW2 - * @type: Polling or interrupt based method - * @raw: Return raw value, do not convert it - */ - -struct twl4030_madc_request { - unsigned long channels; - bool do_avg; - u16 method; - u16 type; - bool active; - bool result_pending; - bool raw; - int rbuf[TWL4030_MADC_MAX_CHANNELS]; - void (*func_cb)(int len, int channels, int *buf); -}; - -enum conversion_methods { - TWL4030_MADC_RT, - TWL4030_MADC_SW1, - TWL4030_MADC_SW2, - TWL4030_MADC_NUM_METHODS -}; - -enum sample_type { - TWL4030_MADC_WAIT, - TWL4030_MADC_IRQ_ONESHOT, - TWL4030_MADC_IRQ_REARM -}; - -#define TWL4030_MADC_CTRL1 0x00 -#define TWL4030_MADC_CTRL2 0x01 - -#define TWL4030_MADC_RTSELECT_LSB 0x02 -#define TWL4030_MADC_SW1SELECT_LSB 0x06 -#define TWL4030_MADC_SW2SELECT_LSB 0x0A - -#define TWL4030_MADC_RTAVERAGE_LSB 0x04 -#define TWL4030_MADC_SW1AVERAGE_LSB 0x08 -#define TWL4030_MADC_SW2AVERAGE_LSB 0x0C - -#define TWL4030_MADC_CTRL_SW1 0x12 -#define TWL4030_MADC_CTRL_SW2 0x13 - -#define TWL4030_MADC_RTCH0_LSB 0x17 -#define TWL4030_MADC_GPCH0_LSB 0x37 - -#define TWL4030_MADC_MADCON (1 << 0) /* MADC power on */ -#define TWL4030_MADC_BUSY (1 << 0) /* MADC busy */ -/* MADC conversion completion */ -#define TWL4030_MADC_EOC_SW (1 << 1) -/* MADC SWx start conversion */ -#define TWL4030_MADC_SW_START (1 << 5) -#define TWL4030_MADC_ADCIN0 (1 << 0) -#define TWL4030_MADC_ADCIN1 (1 << 1) -#define TWL4030_MADC_ADCIN2 (1 << 2) -#define TWL4030_MADC_ADCIN3 (1 << 3) -#define TWL4030_MADC_ADCIN4 (1 << 4) -#define TWL4030_MADC_ADCIN5 (1 << 5) -#define TWL4030_MADC_ADCIN6 (1 << 6) -#define TWL4030_MADC_ADCIN7 (1 << 7) -#define TWL4030_MADC_ADCIN8 (1 << 8) -#define TWL4030_MADC_ADCIN9 (1 << 9) -#define TWL4030_MADC_ADCIN10 (1 << 10) -#define TWL4030_MADC_ADCIN11 (1 << 11) -#define TWL4030_MADC_ADCIN12 (1 << 12) -#define TWL4030_MADC_ADCIN13 (1 << 13) -#define TWL4030_MADC_ADCIN14 (1 << 14) -#define TWL4030_MADC_ADCIN15 (1 << 15) - -/* Fixed channels */ -#define TWL4030_MADC_BTEMP TWL4030_MADC_ADCIN1 -#define TWL4030_MADC_VBUS TWL4030_MADC_ADCIN8 -#define TWL4030_MADC_VBKB TWL4030_MADC_ADCIN9 -#define TWL4030_MADC_ICHG TWL4030_MADC_ADCIN10 -#define TWL4030_MADC_VCHG TWL4030_MADC_ADCIN11 -#define TWL4030_MADC_VBAT TWL4030_MADC_ADCIN12 - -/* Step size and prescaler ratio */ -#define TEMP_STEP_SIZE 147 -#define TEMP_PSR_R 100 -#define CURR_STEP_SIZE 147 -#define CURR_PSR_R1 44 -#define CURR_PSR_R2 88 - -#define TWL4030_BCI_BCICTL1 0x23 -#define TWL4030_BCI_CGAIN 0x020 -#define TWL4030_BCI_MESBAT (1 << 1) -#define TWL4030_BCI_TYPEN (1 << 4) -#define TWL4030_BCI_ITHEN (1 << 3) - -#define REG_BCICTL2 0x024 -#define TWL4030_BCI_ITHSENS 0x007 - -/* Register and bits for GPBR1 register */ -#define TWL4030_REG_GPBR1 0x0c -#define TWL4030_GPBR1_MADC_HFCLK_EN (1 << 7) - -struct twl4030_madc_user_parms { - int channel; - int average; - int status; - u16 result; -}; - -int twl4030_madc_conversion(struct twl4030_madc_request *conv); -int twl4030_get_madc_conversion(int channel_no); -#endif diff --git a/include/linux/ide.h b/include/linux/ide.h index 6980ca322074..dc152e4b7f73 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -671,7 +671,7 @@ struct ide_port_ops { void (*init_dev)(ide_drive_t *); void (*set_pio_mode)(struct hwif_s *, ide_drive_t *); void (*set_dma_mode)(struct hwif_s *, ide_drive_t *); - int (*reset_poll)(ide_drive_t *); + blk_status_t (*reset_poll)(ide_drive_t *); void (*pre_reset)(ide_drive_t *); void (*resetproc)(ide_drive_t *); void (*maskproc)(ide_drive_t *, int); @@ -1092,7 +1092,7 @@ int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned l extern int ide_vlb_clk; extern int ide_pci_clk; -int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int); +int ide_end_rq(ide_drive_t *, struct request *, blk_status_t, unsigned int); void ide_kill_rq(ide_drive_t *, struct request *); void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int); @@ -1123,7 +1123,7 @@ extern int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting, int arg); void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8); -int ide_complete_rq(ide_drive_t *, int, unsigned int); +int ide_complete_rq(ide_drive_t *, blk_status_t, unsigned int); void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd); void ide_tf_dump(const char *, struct ide_cmd *); diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index 47eeec3218b5..5e347a9805fd 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -312,4 +312,41 @@ int iio_read_channel_scale(struct iio_channel *chan, int *val, int iio_convert_raw_to_processed(struct iio_channel *chan, int raw, int *processed, unsigned int scale); +/** + * iio_get_channel_ext_info_count() - get number of ext_info attributes + * connected to the channel. + * @chan: The channel being queried + * + * Returns the number of ext_info attributes + */ +unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan); + +/** + * iio_read_channel_ext_info() - read ext_info attribute from a given channel + * @chan: The channel being queried. + * @attr: The ext_info attribute to read. + * @buf: Where to store the attribute value. Assumed to hold + * at least PAGE_SIZE bytes. + * + * Returns the number of bytes written to buf (perhaps w/o zero termination; + * it need not even be a string), or an error code. + */ +ssize_t iio_read_channel_ext_info(struct iio_channel *chan, + const char *attr, char *buf); + +/** + * iio_write_channel_ext_info() - write ext_info attribute from a given channel + * @chan: The channel being queried. + * @attr: The ext_info attribute to read. + * @buf: The new attribute value. Strings needs to be zero- + * terminated, but the terminator should not be included + * in the below len. + * @len: The size of the new attribute value. + * + * Returns the number of accepted bytes, which should be the same as len. + * An error code can also be returned. + */ +ssize_t iio_write_channel_ext_info(struct iio_channel *chan, const char *attr, + const char *buf, size_t len); + #endif diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 3f5ea2e9a39e..d68bec297a45 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -352,10 +352,16 @@ unsigned int iio_get_time_res(const struct iio_dev *indio_dev); #define INDIO_BUFFER_SOFTWARE 0x04 #define INDIO_BUFFER_HARDWARE 0x08 #define INDIO_EVENT_TRIGGERED 0x10 +#define INDIO_HARDWARE_TRIGGERED 0x20 #define INDIO_ALL_BUFFER_MODES \ (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE | INDIO_BUFFER_SOFTWARE) +#define INDIO_ALL_TRIGGERED_MODES \ + (INDIO_BUFFER_TRIGGERED \ + | INDIO_EVENT_TRIGGERED \ + | INDIO_HARDWARE_TRIGGERED) + #define INDIO_MAX_RAW_ELEMENTS 4 struct iio_trigger; /* forward declaration */ diff --git a/include/linux/iio/timer/stm32-timer-trigger.h b/include/linux/iio/timer/stm32-timer-trigger.h index 55535aef2e6c..fa7d786ed99e 100644 --- a/include/linux/iio/timer/stm32-timer-trigger.h +++ b/include/linux/iio/timer/stm32-timer-trigger.h @@ -10,6 +10,7 @@ #define _STM32_TIMER_TRIGGER_H_ #define TIM1_TRGO "tim1_trgo" +#define TIM1_TRGO2 "tim1_trgo2" #define TIM1_CH1 "tim1_ch1" #define TIM1_CH2 "tim1_ch2" #define TIM1_CH3 "tim1_ch3" @@ -44,6 +45,7 @@ #define TIM7_TRGO "tim7_trgo" #define TIM8_TRGO "tim8_trgo" +#define TIM8_TRGO2 "tim8_trgo2" #define TIM8_CH1 "tim8_ch1" #define TIM8_CH2 "tim8_ch2" #define TIM8_CH3 "tim8_ch3" diff --git a/include/linux/ima.h b/include/linux/ima.h index 7f6952f8d6aa..0e4647e0eb60 100644 --- a/include/linux/ima.h +++ b/include/linux/ima.h @@ -75,11 +75,17 @@ static inline void ima_add_kexec_buffer(struct kimage *image) #endif #ifdef CONFIG_IMA_APPRAISE +extern bool is_ima_appraise_enabled(void); extern void ima_inode_post_setattr(struct dentry *dentry); extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name, const void *xattr_value, size_t xattr_value_len); extern int ima_inode_removexattr(struct dentry *dentry, const char *xattr_name); #else +static inline bool is_ima_appraise_enabled(void) +{ + return 0; +} + static inline void ima_inode_post_setattr(struct dentry *dentry) { return; diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index a6fba4804672..37f8e354f564 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -703,6 +703,12 @@ static inline void init_irq_proc(void) } #endif +#ifdef CONFIG_IRQ_TIMINGS +void irq_timings_enable(void); +void irq_timings_disable(void); +u64 irq_timings_next_event(u64 now); +#endif + struct seq_file; int show_interrupts(struct seq_file *p, void *v); int arch_show_interrupts(struct seq_file *p, int prec); diff --git a/include/linux/iomap.h b/include/linux/iomap.h index f753e788da31..69f4e9470084 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -52,6 +52,7 @@ struct iomap { #define IOMAP_REPORT (1 << 2) /* report extent status, e.g. FIEMAP */ #define IOMAP_FAULT (1 << 3) /* mapping for page fault */ #define IOMAP_DIRECT (1 << 4) /* direct I/O */ +#define IOMAP_NOWAIT (1 << 5) /* Don't wait for writeback */ struct iomap_ops { /* diff --git a/include/linux/irq.h b/include/linux/irq.h index f887351aa80e..00db35b61e9e 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -22,6 +22,7 @@ #include <linux/topology.h> #include <linux/wait.h> #include <linux/io.h> +#include <linux/slab.h> #include <asm/irq.h> #include <asm/ptrace.h> @@ -136,6 +137,9 @@ struct irq_domain; * @affinity: IRQ affinity on SMP. If this is an IPI * related irq, then this is the mask of the * CPUs to which an IPI can be sent. + * @effective_affinity: The effective IRQ affinity on SMP as some irq + * chips do not allow multi CPU destinations. + * A subset of @affinity. * @msi_desc: MSI descriptor * @ipi_offset: Offset of first IPI target cpu in @affinity. Optional. */ @@ -147,6 +151,9 @@ struct irq_common_data { void *handler_data; struct msi_desc *msi_desc; cpumask_var_t affinity; +#ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK + cpumask_var_t effective_affinity; +#endif #ifdef CONFIG_GENERIC_IRQ_IPI unsigned int ipi_offset; #endif @@ -199,6 +206,10 @@ struct irq_data { * IRQD_WAKEUP_ARMED - Wakeup mode armed * IRQD_FORWARDED_TO_VCPU - The interrupt is forwarded to a VCPU * IRQD_AFFINITY_MANAGED - Affinity is auto-managed by the kernel + * IRQD_IRQ_STARTED - Startup state of the interrupt + * IRQD_MANAGED_SHUTDOWN - Interrupt was shutdown due to empty affinity + * mask. Applies only to affinity managed irqs. + * IRQD_SINGLE_TARGET - IRQ allows only a single affinity target */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -216,6 +227,9 @@ enum { IRQD_WAKEUP_ARMED = (1 << 19), IRQD_FORWARDED_TO_VCPU = (1 << 20), IRQD_AFFINITY_MANAGED = (1 << 21), + IRQD_IRQ_STARTED = (1 << 22), + IRQD_MANAGED_SHUTDOWN = (1 << 23), + IRQD_SINGLE_TARGET = (1 << 24), }; #define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors) @@ -264,6 +278,20 @@ static inline bool irqd_is_level_type(struct irq_data *d) return __irqd_to_state(d) & IRQD_LEVEL; } +/* + * Must only be called of irqchip.irq_set_affinity() or low level + * hieararchy domain allocation functions. + */ +static inline void irqd_set_single_target(struct irq_data *d) +{ + __irqd_to_state(d) |= IRQD_SINGLE_TARGET; +} + +static inline bool irqd_is_single_target(struct irq_data *d) +{ + return __irqd_to_state(d) & IRQD_SINGLE_TARGET; +} + static inline bool irqd_is_wakeup_set(struct irq_data *d) { return __irqd_to_state(d) & IRQD_WAKEUP_STATE; @@ -329,6 +357,16 @@ static inline void irqd_clr_activated(struct irq_data *d) __irqd_to_state(d) &= ~IRQD_ACTIVATED; } +static inline bool irqd_is_started(struct irq_data *d) +{ + return __irqd_to_state(d) & IRQD_IRQ_STARTED; +} + +static inline bool irqd_is_managed_and_shutdown(struct irq_data *d) +{ + return __irqd_to_state(d) & IRQD_MANAGED_SHUTDOWN; +} + #undef __irqd_to_state static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) @@ -478,14 +516,21 @@ extern int irq_set_affinity_locked(struct irq_data *data, const struct cpumask *cpumask, bool force); extern int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info); +#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_IRQ_MIGRATION) extern void irq_migrate_all_off_this_cpu(void); +extern int irq_affinity_online_cpu(unsigned int cpu); +#else +# define irq_affinity_online_cpu NULL +#endif #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ) void irq_move_irq(struct irq_data *data); void irq_move_masked_irq(struct irq_data *data); +void irq_force_complete_move(struct irq_desc *desc); #else static inline void irq_move_irq(struct irq_data *data) { } static inline void irq_move_masked_irq(struct irq_data *data) { } +static inline void irq_force_complete_move(struct irq_desc *desc) { } #endif extern int no_irq_affinity; @@ -727,6 +772,29 @@ static inline struct cpumask *irq_data_get_affinity_mask(struct irq_data *d) return d->common->affinity; } +#ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK +static inline +struct cpumask *irq_data_get_effective_affinity_mask(struct irq_data *d) +{ + return d->common->effective_affinity; +} +static inline void irq_data_update_effective_affinity(struct irq_data *d, + const struct cpumask *m) +{ + cpumask_copy(d->common->effective_affinity, m); +} +#else +static inline void irq_data_update_effective_affinity(struct irq_data *d, + const struct cpumask *m) +{ +} +static inline +struct cpumask *irq_data_get_effective_affinity_mask(struct irq_data *d) +{ + return d->common->affinity; +} +#endif + unsigned int arch_dynirq_lower_bound(unsigned int from); int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node, @@ -951,6 +1019,14 @@ int irq_setup_alt_chip(struct irq_data *d, unsigned int type); void irq_remove_generic_chip(struct irq_chip_generic *gc, u32 msk, unsigned int clr, unsigned int set); +struct irq_chip_generic * +devm_irq_alloc_generic_chip(struct device *dev, const char *name, int num_ct, + unsigned int irq_base, void __iomem *reg_base, + irq_flow_handler_t handler); +int devm_irq_setup_generic_chip(struct device *dev, struct irq_chip_generic *gc, + u32 msk, enum irq_gc_flags flags, + unsigned int clr, unsigned int set); + struct irq_chip_generic *irq_get_domain_generic_chip(struct irq_domain *d, unsigned int hw_irq); int __irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip, @@ -967,6 +1043,19 @@ int __irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip, handler, clr, set, flags); \ }) +static inline void irq_free_generic_chip(struct irq_chip_generic *gc) +{ + kfree(gc); +} + +static inline void irq_destroy_generic_chip(struct irq_chip_generic *gc, + u32 msk, unsigned int clr, + unsigned int set) +{ + irq_remove_generic_chip(gc, msk, clr, set); + irq_free_generic_chip(gc); +} + static inline struct irq_chip_type *irq_data_get_chip_type(struct irq_data *d) { return container_of(d->chip, struct irq_chip_type, chip); diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h index fffb91202bc9..1fa293a37f4a 100644 --- a/include/linux/irqchip/arm-gic-v3.h +++ b/include/linux/irqchip/arm-gic-v3.h @@ -417,6 +417,10 @@ #define ICH_HCR_EN (1 << 0) #define ICH_HCR_UIE (1 << 1) +#define ICH_VMCR_ACK_CTL_SHIFT 2 +#define ICH_VMCR_ACK_CTL_MASK (1 << ICH_VMCR_ACK_CTL_SHIFT) +#define ICH_VMCR_FIQ_EN_SHIFT 3 +#define ICH_VMCR_FIQ_EN_MASK (1 << ICH_VMCR_FIQ_EN_SHIFT) #define ICH_VMCR_CBPR_SHIFT 4 #define ICH_VMCR_CBPR_MASK (1 << ICH_VMCR_CBPR_SHIFT) #define ICH_VMCR_EOIM_SHIFT 9 diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h index dc30f3d057eb..d3453ee072fc 100644 --- a/include/linux/irqchip/arm-gic.h +++ b/include/linux/irqchip/arm-gic.h @@ -25,7 +25,18 @@ #define GICC_ENABLE 0x1 #define GICC_INT_PRI_THRESHOLD 0xf0 -#define GIC_CPU_CTRL_EOImodeNS (1 << 9) +#define GIC_CPU_CTRL_EnableGrp0_SHIFT 0 +#define GIC_CPU_CTRL_EnableGrp0 (1 << GIC_CPU_CTRL_EnableGrp0_SHIFT) +#define GIC_CPU_CTRL_EnableGrp1_SHIFT 1 +#define GIC_CPU_CTRL_EnableGrp1 (1 << GIC_CPU_CTRL_EnableGrp1_SHIFT) +#define GIC_CPU_CTRL_AckCtl_SHIFT 2 +#define GIC_CPU_CTRL_AckCtl (1 << GIC_CPU_CTRL_AckCtl_SHIFT) +#define GIC_CPU_CTRL_FIQEn_SHIFT 3 +#define GIC_CPU_CTRL_FIQEn (1 << GIC_CPU_CTRL_FIQEn_SHIFT) +#define GIC_CPU_CTRL_CBPR_SHIFT 4 +#define GIC_CPU_CTRL_CBPR (1 << GIC_CPU_CTRL_CBPR_SHIFT) +#define GIC_CPU_CTRL_EOImodeNS_SHIFT 9 +#define GIC_CPU_CTRL_EOImodeNS (1 << GIC_CPU_CTRL_EOImodeNS_SHIFT) #define GICC_IAR_INT_ID_MASK 0x3ff #define GICC_INT_SPURIOUS 1023 @@ -84,8 +95,19 @@ #define GICH_LR_EOI (1 << 19) #define GICH_LR_HW (1 << 31) -#define GICH_VMCR_CTRL_SHIFT 0 -#define GICH_VMCR_CTRL_MASK (0x21f << GICH_VMCR_CTRL_SHIFT) +#define GICH_VMCR_ENABLE_GRP0_SHIFT 0 +#define GICH_VMCR_ENABLE_GRP0_MASK (1 << GICH_VMCR_ENABLE_GRP0_SHIFT) +#define GICH_VMCR_ENABLE_GRP1_SHIFT 1 +#define GICH_VMCR_ENABLE_GRP1_MASK (1 << GICH_VMCR_ENABLE_GRP1_SHIFT) +#define GICH_VMCR_ACK_CTL_SHIFT 2 +#define GICH_VMCR_ACK_CTL_MASK (1 << GICH_VMCR_ACK_CTL_SHIFT) +#define GICH_VMCR_FIQ_EN_SHIFT 3 +#define GICH_VMCR_FIQ_EN_MASK (1 << GICH_VMCR_FIQ_EN_SHIFT) +#define GICH_VMCR_CBPR_SHIFT 4 +#define GICH_VMCR_CBPR_MASK (1 << GICH_VMCR_CBPR_SHIFT) +#define GICH_VMCR_EOI_MODE_SHIFT 9 +#define GICH_VMCR_EOI_MODE_MASK (1 << GICH_VMCR_EOI_MODE_SHIFT) + #define GICH_VMCR_PRIMASK_SHIFT 27 #define GICH_VMCR_PRIMASK_MASK (0x1f << GICH_VMCR_PRIMASK_SHIFT) #define GICH_VMCR_BINPOINT_SHIFT 21 diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index c9be57931b58..d425a3a09722 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -46,6 +46,7 @@ struct pt_regs; * @rcu: rcu head for delayed free * @kobj: kobject used to represent this struct in sysfs * @dir: /proc/irq/ procfs entry + * @debugfs_file: dentry for the debugfs file * @name: flow handler name for /proc/interrupts output */ struct irq_desc { @@ -88,6 +89,9 @@ struct irq_desc { #ifdef CONFIG_PROC_FS struct proc_dir_entry *dir; #endif +#ifdef CONFIG_GENERIC_IRQ_DEBUGFS + struct dentry *debugfs_file; +#endif #ifdef CONFIG_SPARSE_IRQ struct rcu_head rcu; struct kobject kobj; diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 9f3616085423..cac77a5c5555 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -130,6 +130,7 @@ struct irq_domain_chip_generic; * @host_data: private data pointer for use by owner. Not touched by irq_domain * core code. * @flags: host per irq_domain flags + * @mapcount: The number of mapped interrupts * * Optional elements * @of_node: Pointer to device tree nodes associated with the irq_domain. Used @@ -138,6 +139,7 @@ struct irq_domain_chip_generic; * setting up one or more generic chips for interrupt controllers * drivers using the generic chip library which uses this pointer. * @parent: Pointer to parent irq_domain to support hierarchy irq_domains + * @debugfs_file: dentry for the domain debugfs file * * Revmap data, used internally by irq_domain * @revmap_direct_max_irq: The largest hwirq that can be set for controllers that @@ -152,6 +154,7 @@ struct irq_domain { const struct irq_domain_ops *ops; void *host_data; unsigned int flags; + unsigned int mapcount; /* Optional data */ struct fwnode_handle *fwnode; @@ -160,6 +163,9 @@ struct irq_domain { #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY struct irq_domain *parent; #endif +#ifdef CONFIG_GENERIC_IRQ_DEBUGFS + struct dentry *debugfs_file; +#endif /* reverse map data. The linear map gets appended to the irq_domain */ irq_hw_number_t hwirq_max; @@ -174,8 +180,8 @@ enum { /* Irq domain is hierarchical */ IRQ_DOMAIN_FLAG_HIERARCHY = (1 << 0), - /* Core calls alloc/free recursive through the domain hierarchy. */ - IRQ_DOMAIN_FLAG_AUTO_RECURSIVE = (1 << 1), + /* Irq domain name was allocated in __irq_domain_add() */ + IRQ_DOMAIN_NAME_ALLOCATED = (1 << 6), /* Irq domain is an IPI domain with virq per cpu */ IRQ_DOMAIN_FLAG_IPI_PER_CPU = (1 << 2), @@ -203,7 +209,33 @@ static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d) } #ifdef CONFIG_IRQ_DOMAIN -struct fwnode_handle *irq_domain_alloc_fwnode(void *data); +struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id, + const char *name, void *data); + +enum { + IRQCHIP_FWNODE_REAL, + IRQCHIP_FWNODE_NAMED, + IRQCHIP_FWNODE_NAMED_ID, +}; + +static inline +struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name) +{ + return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL); +} + +static inline +struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id) +{ + return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name, + NULL); +} + +static inline struct fwnode_handle *irq_domain_alloc_fwnode(void *data) +{ + return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, data); +} + void irq_domain_free_fwnode(struct fwnode_handle *fwnode); struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size, irq_hw_number_t hwirq_max, int direct_max, @@ -238,6 +270,9 @@ static inline bool is_fwnode_irqchip(struct fwnode_handle *fwnode) return fwnode && fwnode->type == FWNODE_IRQCHIP; } +extern void irq_domain_update_bus_token(struct irq_domain *domain, + enum irq_domain_bus_token bus_token); + static inline struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) @@ -410,7 +445,7 @@ static inline int irq_domain_alloc_irqs(struct irq_domain *domain, NULL); } -extern int irq_domain_alloc_irqs_recursive(struct irq_domain *domain, +extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain, unsigned int irq_base, unsigned int nr_irqs, void *arg); extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h index 36872fbb815d..734377ad42e9 100644 --- a/include/linux/jiffies.h +++ b/include/linux/jiffies.h @@ -64,13 +64,17 @@ extern int register_refined_jiffies(long clock_tick_rate); /* TICK_USEC is the time between ticks in usec assuming fake USER_HZ */ #define TICK_USEC ((1000000UL + USER_HZ/2) / USER_HZ) +#ifndef __jiffy_arch_data +#define __jiffy_arch_data +#endif + /* * The 64-bit value is not atomic - you MUST NOT read it * without sampling the sequence number in jiffies_lock. * get_jiffies_64() will do this for you as appropriate. */ extern u64 __cacheline_aligned_in_smp jiffies_64; -extern unsigned long volatile __cacheline_aligned_in_smp jiffies; +extern unsigned long volatile __cacheline_aligned_in_smp __jiffy_arch_data jiffies; #if (BITS_PER_LONG < 64) u64 get_jiffies_64(void); diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 13bc08aba704..1c91f26e2996 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -490,9 +490,13 @@ extern int root_mountflags; extern bool early_boot_irqs_disabled; -/* Values used for system_state */ +/* + * Values used for system_state. Ordering of the states must not be changed + * as code checks for <, <=, >, >= STATE. + */ extern enum system_states { SYSTEM_BOOTING, + SYSTEM_SCHEDULING, SYSTEM_RUNNING, SYSTEM_HALT, SYSTEM_POWER_OFF, diff --git a/include/linux/key.h b/include/linux/key.h index 0c9b93b0d1f7..044114185120 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -9,7 +9,7 @@ * 2 of the License, or (at your option) any later version. * * - * See Documentation/security/keys.txt for information on keys/keyrings. + * See Documentation/security/keys/core.rst for information on keys/keyrings. */ #ifndef _LINUX_KEY_H @@ -173,7 +173,6 @@ struct key { #ifdef KEY_DEBUGGING unsigned magic; #define KEY_DEBUG_MAGIC 0x18273645u -#define KEY_DEBUG_MAGIC_X 0xf8e9dacbu #endif unsigned long flags; /* status flags (change with bitops) */ diff --git a/include/linux/kobject.h b/include/linux/kobject.h index ca85cb80e99a..eeab34b0f589 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -217,11 +217,9 @@ extern struct kobject *firmware_kobj; int kobject_uevent(struct kobject *kobj, enum kobject_action action); int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[]); +int kobject_synth_uevent(struct kobject *kobj, const char *buf, size_t count); __printf(2, 3) int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...); -int kobject_action_type(const char *buf, size_t count, - enum kobject_action *type); - #endif /* _KOBJECT_H_ */ diff --git a/include/linux/kvm_irqfd.h b/include/linux/kvm_irqfd.h index 0c1de05098c8..76c2fbc59f35 100644 --- a/include/linux/kvm_irqfd.h +++ b/include/linux/kvm_irqfd.h @@ -46,7 +46,7 @@ struct kvm_kernel_irqfd_resampler { struct kvm_kernel_irqfd { /* Used for MSI fast-path */ struct kvm *kvm; - wait_queue_t wait; + wait_queue_entry_t wait; /* Update side is protected by irqfds.lock */ struct kvm_kernel_irq_routing_entry irq_entry; seqcount_t irq_entry_sc; diff --git a/include/linux/libata.h b/include/linux/libata.h index c9a69fc8821e..9e6633235ad7 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -19,7 +19,7 @@ * * * libata documentation is available via 'make {ps|pdf}docs', - * as Documentation/DocBook/libata.* + * as Documentation/driver-api/libata.rst * */ diff --git a/include/linux/llist.h b/include/linux/llist.h index 171baa90f6f6..d11738110a7a 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -110,6 +110,25 @@ static inline void init_llist_head(struct llist_head *list) for ((pos) = (node); pos; (pos) = (pos)->next) /** + * llist_for_each_safe - iterate over some deleted entries of a lock-less list + * safe against removal of list entry + * @pos: the &struct llist_node to use as a loop cursor + * @n: another &struct llist_node to use as temporary storage + * @node: the first entry of deleted list entries + * + * In general, some entries of the lock-less list can be traversed + * safely only after being deleted from list, so start with an entry + * instead of list head. + * + * If being used on entries deleted from lock-less list directly, the + * traverse order is from the newest to the oldest added entry. If + * you want to traverse from the oldest to the newest, you must + * reverse the order by yourself before traversing. + */ +#define llist_for_each_safe(pos, n, node) \ + for ((pos) = (node); (pos) && ((n) = (pos)->next, true); (pos) = (n)) + +/** * llist_for_each_entry - iterate over some deleted entries of lock-less list of given type * @pos: the type * to use as a loop cursor. * @node: the fist entry of deleted list entries. diff --git a/include/linux/lsm_audit.h b/include/linux/lsm_audit.h index e58e577117b6..22b5d4e687ce 100644 --- a/include/linux/lsm_audit.h +++ b/include/linux/lsm_audit.h @@ -21,6 +21,7 @@ #include <linux/path.h> #include <linux/key.h> #include <linux/skbuff.h> +#include <rdma/ib_verbs.h> struct lsm_network_audit { int netif; @@ -45,6 +46,16 @@ struct lsm_ioctlop_audit { u16 cmd; }; +struct lsm_ibpkey_audit { + u64 subnet_prefix; + u16 pkey; +}; + +struct lsm_ibendport_audit { + char dev_name[IB_DEVICE_NAME_MAX]; + u8 port; +}; + /* Auxiliary data to use in generating the audit record. */ struct common_audit_data { char type; @@ -60,6 +71,8 @@ struct common_audit_data { #define LSM_AUDIT_DATA_DENTRY 10 #define LSM_AUDIT_DATA_IOCTL_OP 11 #define LSM_AUDIT_DATA_FILE 12 +#define LSM_AUDIT_DATA_IBPKEY 13 +#define LSM_AUDIT_DATA_IBENDPORT 14 union { struct path path; struct dentry *dentry; @@ -77,6 +90,8 @@ struct common_audit_data { char *kmod_name; struct lsm_ioctlop_audit *op; struct file *file; + struct lsm_ibpkey_audit *ibpkey; + struct lsm_ibendport_audit *ibendport; } u; /* this union contains LSM specific data */ union { diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h index 080f34e66017..7a86925ba8f3 100644 --- a/include/linux/lsm_hooks.h +++ b/include/linux/lsm_hooks.h @@ -8,6 +8,7 @@ * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) * Copyright (C) 2015 Intel Corporation. * Copyright (C) 2015 Casey Schaufler <casey@schaufler-ca.com> + * Copyright (C) 2016 Mellanox Techonologies * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -29,6 +30,8 @@ #include <linux/rculist.h> /** + * union security_list_options - Linux Security Module hook function list + * * Security hooks for program execution operations. * * @bprm_set_creds: @@ -193,8 +196,8 @@ * @value will be set to the allocated attribute value. * @len will be set to the length of the value. * Returns 0 if @name and @value have been successfully set, - * -EOPNOTSUPP if no security attribute is needed, or - * -ENOMEM on memory allocation failure. + * -EOPNOTSUPP if no security attribute is needed, or + * -ENOMEM on memory allocation failure. * @inode_create: * Check permission to create a regular file. * @dir contains inode structure of the parent of the new file. @@ -510,8 +513,7 @@ * process @tsk. Note that this hook is sometimes called from interrupt. * Note that the fown_struct, @fown, is never outside the context of a * struct file, so the file structure (and associated security information) - * can always be obtained: - * container_of(fown, struct file, f_owner) + * can always be obtained: container_of(fown, struct file, f_owner) * @tsk contains the structure of task receiving signal. * @fown contains the file owner information. * @sig is the signal that will be sent. When 0, kernel sends SIGIO. @@ -521,7 +523,7 @@ * to receive an open file descriptor via socket IPC. * @file contains the file structure being received. * Return 0 if permission is granted. - * @file_open + * @file_open: * Save open-time permission checking state for later use upon * file_permission, and recheck access if anything has changed * since inode_permission. @@ -911,6 +913,26 @@ * associated with the TUN device's security structure. * @security pointer to the TUN devices's security structure. * + * Security hooks for Infiniband + * + * @ib_pkey_access: + * Check permission to access a pkey when modifing a QP. + * @subnet_prefix the subnet prefix of the port being used. + * @pkey the pkey to be accessed. + * @sec pointer to a security structure. + * @ib_endport_manage_subnet: + * Check permissions to send and receive SMPs on a end port. + * @dev_name the IB device name (i.e. mlx4_0). + * @port_num the port number. + * @sec pointer to a security structure. + * @ib_alloc_security: + * Allocate a security structure for Infiniband objects. + * @sec pointer to a security structure pointer. + * Returns 0 on success, non-zero on failure + * @ib_free_security: + * Deallocate an Infiniband security structure. + * @sec contains the security structure to be freed. + * * Security hooks for XFRM operations. * * @xfrm_policy_alloc_security: @@ -1143,7 +1165,7 @@ * @sma contains the semaphore structure. May be NULL. * @cmd contains the operation to be performed. * Return 0 if permission is granted. - * @sem_semop + * @sem_semop: * Check permissions before performing operations on members of the * semaphore set @sma. If the @alter flag is nonzero, the semaphore set * may be modified. @@ -1153,20 +1175,20 @@ * @alter contains the flag indicating whether changes are to be made. * Return 0 if permission is granted. * - * @binder_set_context_mgr + * @binder_set_context_mgr: * Check whether @mgr is allowed to be the binder context manager. * @mgr contains the task_struct for the task being registered. * Return 0 if permission is granted. - * @binder_transaction + * @binder_transaction: * Check whether @from is allowed to invoke a binder transaction call * to @to. * @from contains the task_struct for the sending task. * @to contains the task_struct for the receiving task. - * @binder_transfer_binder + * @binder_transfer_binder: * Check whether @from is allowed to transfer a binder reference to @to. * @from contains the task_struct for the sending task. * @to contains the task_struct for the receiving task. - * @binder_transfer_file + * @binder_transfer_file: * Check whether @from is allowed to transfer @file to @to. * @from contains the task_struct for the sending task. * @file contains the struct file being transferred. @@ -1214,7 +1236,7 @@ * @cred contains the credentials to use. * @ns contains the user namespace we want the capability in * @cap contains the capability <include/linux/capability.h>. - * @audit: Whether to write an audit message or not + * @audit contains whether to write an audit message or not * Return 0 if the capability is granted for @tsk. * @syslog: * Check permission before accessing the kernel message ring or changing @@ -1336,9 +1358,7 @@ * @inode we wish to get the security context of. * @ctx is a pointer in which to place the allocated security context. * @ctxlen points to the place to put the length of @ctx. - * This is the main security structure. */ - union security_list_options { int (*binder_set_context_mgr)(struct task_struct *mgr); int (*binder_transaction)(struct task_struct *from, @@ -1388,7 +1408,9 @@ union security_list_options { unsigned long kern_flags, unsigned long *set_kern_flags); int (*sb_clone_mnt_opts)(const struct super_block *oldsb, - struct super_block *newsb); + struct super_block *newsb, + unsigned long kern_flags, + unsigned long *set_kern_flags); int (*sb_parse_opts_str)(char *options, struct security_mnt_opts *opts); int (*dentry_init_security)(struct dentry *dentry, int mode, const struct qstr *name, void **ctx, @@ -1620,6 +1642,14 @@ union security_list_options { int (*tun_dev_open)(void *security); #endif /* CONFIG_SECURITY_NETWORK */ +#ifdef CONFIG_SECURITY_INFINIBAND + int (*ib_pkey_access)(void *sec, u64 subnet_prefix, u16 pkey); + int (*ib_endport_manage_subnet)(void *sec, const char *dev_name, + u8 port_num); + int (*ib_alloc_security)(void **sec); + void (*ib_free_security)(void *sec); +#endif /* CONFIG_SECURITY_INFINIBAND */ + #ifdef CONFIG_SECURITY_NETWORK_XFRM int (*xfrm_policy_alloc_security)(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx, @@ -1851,6 +1881,12 @@ struct security_hook_heads { struct list_head tun_dev_attach; struct list_head tun_dev_open; #endif /* CONFIG_SECURITY_NETWORK */ +#ifdef CONFIG_SECURITY_INFINIBAND + struct list_head ib_pkey_access; + struct list_head ib_endport_manage_subnet; + struct list_head ib_alloc_security; + struct list_head ib_free_security; +#endif /* CONFIG_SECURITY_INFINIBAND */ #ifdef CONFIG_SECURITY_NETWORK_XFRM struct list_head xfrm_policy_alloc_security; struct list_head xfrm_policy_clone_security; diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 4ce24a376262..8098695e5d8d 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -425,12 +425,20 @@ static inline void early_memtest(phys_addr_t start, phys_addr_t end) } #endif +extern unsigned long memblock_reserved_memory_within(phys_addr_t start_addr, + phys_addr_t end_addr); #else static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align) { return 0; } +static inline unsigned long memblock_reserved_memory_within(phys_addr_t start_addr, + phys_addr_t end_addr) +{ + return 0; +} + #endif /* CONFIG_HAVE_MEMBLOCK */ #endif /* __KERNEL__ */ diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h index cde56cfe8446..965b027e31b3 100644 --- a/include/linux/mfd/axp20x.h +++ b/include/linux/mfd/axp20x.h @@ -119,6 +119,17 @@ enum axp20x_variants { #define AXP806_BUS_ADDR_EXT 0xfe #define AXP806_REG_ADDR_EXT 0xff +#define AXP803_POLYPHASE_CTRL 0x14 +#define AXP803_FLDO1_V_OUT 0x1c +#define AXP803_FLDO2_V_OUT 0x1d +#define AXP803_DCDC1_V_OUT 0x20 +#define AXP803_DCDC2_V_OUT 0x21 +#define AXP803_DCDC3_V_OUT 0x22 +#define AXP803_DCDC4_V_OUT 0x23 +#define AXP803_DCDC5_V_OUT 0x24 +#define AXP803_DCDC6_V_OUT 0x25 +#define AXP803_DCDC_FREQ_CTRL 0x3b + /* Interrupt */ #define AXP152_IRQ1_EN 0x40 #define AXP152_IRQ2_EN 0x41 @@ -350,6 +361,32 @@ enum { AXP809_REG_ID_MAX, }; +enum { + AXP803_DCDC1 = 0, + AXP803_DCDC2, + AXP803_DCDC3, + AXP803_DCDC4, + AXP803_DCDC5, + AXP803_DCDC6, + AXP803_DC1SW, + AXP803_ALDO1, + AXP803_ALDO2, + AXP803_ALDO3, + AXP803_DLDO1, + AXP803_DLDO2, + AXP803_DLDO3, + AXP803_DLDO4, + AXP803_ELDO1, + AXP803_ELDO2, + AXP803_ELDO3, + AXP803_FLDO1, + AXP803_FLDO2, + AXP803_RTC_LDO, + AXP803_LDO_IO0, + AXP803_LDO_IO1, + AXP803_REG_ID_MAX, +}; + /* IRQs */ enum { AXP152_IRQ_LDO0IN_CONNECT = 1, diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h index 5c9a1d44c125..6dec43826303 100644 --- a/include/linux/mfd/palmas.h +++ b/include/linux/mfd/palmas.h @@ -250,6 +250,7 @@ enum tps65917_regulators { TPS65917_REG_SMPS3, TPS65917_REG_SMPS4, TPS65917_REG_SMPS5, + TPS65917_REG_SMPS12, /* LDO regulators */ TPS65917_REG_LDO1, TPS65917_REG_LDO2, @@ -317,6 +318,7 @@ enum tps65917_external_requestor_id { TPS65917_EXTERNAL_REQSTR_ID_SMPS3, TPS65917_EXTERNAL_REQSTR_ID_SMPS4, TPS65917_EXTERNAL_REQSTR_ID_SMPS5, + TPS65917_EXTERNAL_REQSTR_ID_SMPS12, TPS65917_EXTERNAL_REQSTR_ID_LDO1, TPS65917_EXTERNAL_REQSTR_ID_LDO2, TPS65917_EXTERNAL_REQSTR_ID_LDO3, diff --git a/include/linux/mfd/stm32-timers.h b/include/linux/mfd/stm32-timers.h index 4a0abbc10ef6..ce7346e7f77a 100644 --- a/include/linux/mfd/stm32-timers.h +++ b/include/linux/mfd/stm32-timers.h @@ -34,6 +34,7 @@ #define TIM_CR1_DIR BIT(4) /* Counter Direction */ #define TIM_CR1_ARPE BIT(7) /* Auto-reload Preload Ena */ #define TIM_CR2_MMS (BIT(4) | BIT(5) | BIT(6)) /* Master mode selection */ +#define TIM_CR2_MMS2 GENMASK(23, 20) /* Master mode selection 2 */ #define TIM_SMCR_SMS (BIT(0) | BIT(1) | BIT(2)) /* Slave mode selection */ #define TIM_SMCR_TS (BIT(4) | BIT(5) | BIT(6)) /* Trigger selection */ #define TIM_DIER_UIE BIT(0) /* Update interrupt */ @@ -60,6 +61,7 @@ #define MAX_TIM_PSC 0xFFFF #define TIM_CR2_MMS_SHIFT 4 +#define TIM_CR2_MMS2_SHIFT 20 #define TIM_SMCR_TS_SHIFT 4 #define TIM_BDTR_BKF_MASK 0xF #define TIM_BDTR_BKF_SHIFT 16 diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index a1520d88ebf3..26e8f8c0a6db 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -13,15 +13,15 @@ #define tmio_ioread16(addr) readw(addr) #define tmio_ioread16_rep(r, b, l) readsw(r, b, l) #define tmio_ioread32(addr) \ - (((u32) readw((addr))) | (((u32) readw((addr) + 2)) << 16)) + (((u32)readw((addr))) | (((u32)readw((addr) + 2)) << 16)) #define tmio_iowrite8(val, addr) writeb((val), (addr)) #define tmio_iowrite16(val, addr) writew((val), (addr)) #define tmio_iowrite16_rep(r, b, l) writesw(r, b, l) #define tmio_iowrite32(val, addr) \ do { \ - writew((val), (addr)); \ - writew((val) >> 16, (addr) + 2); \ + writew((val), (addr)); \ + writew((val) >> 16, (addr) + 2); \ } while (0) #define CNF_CMD 0x04 @@ -55,57 +55,57 @@ } while (0) /* tmio MMC platform flags */ -#define TMIO_MMC_WRPROTECT_DISABLE (1 << 0) +#define TMIO_MMC_WRPROTECT_DISABLE BIT(0) /* * Some controllers can support a 2-byte block size when the bus width * is configured in 4-bit mode. */ -#define TMIO_MMC_BLKSZ_2BYTES (1 << 1) +#define TMIO_MMC_BLKSZ_2BYTES BIT(1) /* * Some controllers can support SDIO IRQ signalling. */ -#define TMIO_MMC_SDIO_IRQ (1 << 2) +#define TMIO_MMC_SDIO_IRQ BIT(2) -/* Some features are only available or tested on RCar Gen2 or later */ -#define TMIO_MMC_MIN_RCAR2 (1 << 3) +/* Some features are only available or tested on R-Car Gen2 or later */ +#define TMIO_MMC_MIN_RCAR2 BIT(3) /* * Some controllers require waiting for the SD bus to become * idle before writing to some registers. */ -#define TMIO_MMC_HAS_IDLE_WAIT (1 << 4) +#define TMIO_MMC_HAS_IDLE_WAIT BIT(4) /* * A GPIO is used for card hotplug detection. We need an extra flag for this, * because 0 is a valid GPIO number too, and requiring users to specify * cd_gpio < 0 to disable GPIO hotplug would break backwards compatibility. */ -#define TMIO_MMC_USE_GPIO_CD (1 << 5) +#define TMIO_MMC_USE_GPIO_CD BIT(5) /* * Some controllers doesn't have over 0x100 register. * it is used to checking accessibility of * CTL_SD_CARD_CLK_CTL / CTL_CLK_AND_WAIT_CTL */ -#define TMIO_MMC_HAVE_HIGH_REG (1 << 6) +#define TMIO_MMC_HAVE_HIGH_REG BIT(6) /* * Some controllers have CMD12 automatically * issue/non-issue register */ -#define TMIO_MMC_HAVE_CMD12_CTRL (1 << 7) +#define TMIO_MMC_HAVE_CMD12_CTRL BIT(7) /* Controller has some SDIO status bits which must be 1 */ -#define TMIO_MMC_SDIO_STATUS_SETBITS (1 << 8) +#define TMIO_MMC_SDIO_STATUS_SETBITS BIT(8) /* * Some controllers have a 32-bit wide data port register */ -#define TMIO_MMC_32BIT_DATA_PORT (1 << 9) +#define TMIO_MMC_32BIT_DATA_PORT BIT(9) /* * Some controllers allows to set SDx actual clock */ -#define TMIO_MMC_CLK_ACTUAL (1 << 10) +#define TMIO_MMC_CLK_ACTUAL BIT(10) int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base); int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base); @@ -146,9 +146,9 @@ struct tmio_nand_data { struct tmio_fb_data { int (*lcd_set_power)(struct platform_device *fb_dev, - bool on); + bool on); int (*lcd_mode)(struct platform_device *fb_dev, - const struct fb_videomode *mode); + const struct fb_videomode *mode); int num_modes; struct fb_videomode *modes; @@ -157,5 +157,4 @@ struct tmio_fb_data { int width; }; - #endif diff --git a/include/linux/mfd/tps65910.h b/include/linux/mfd/tps65910.h index ffb21e79204d..deffdcd0236f 100644 --- a/include/linux/mfd/tps65910.h +++ b/include/linux/mfd/tps65910.h @@ -879,7 +879,7 @@ struct tps65910_board { bool en_ck32k_xtal; bool en_dev_slp; bool pm_off; - struct tps65910_sleep_keepon_data *slp_keepon; + struct tps65910_sleep_keepon_data slp_keepon; bool en_gpio_sleep[TPS6591X_MAX_NUM_GPIO]; unsigned long regulator_ext_sleep_control[TPS65910_NUM_REGS]; struct regulator_init_data *tps65910_pmic_init_data[TPS65910_NUM_REGS]; diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h index 762b5fec3383..58751eae5f77 100644 --- a/include/linux/miscdevice.h +++ b/include/linux/miscdevice.h @@ -54,6 +54,7 @@ #define VHOST_NET_MINOR 238 #define UHID_MINOR 239 #define USERIO_MINOR 240 +#define VHOST_VSOCK_MINOR 241 #define MISC_DYNAMIC_MINOR 255 struct device; diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h index b4ee8f62ce8d..8e2828d48d7f 100644 --- a/include/linux/mlx4/qp.h +++ b/include/linux/mlx4/qp.h @@ -470,6 +470,7 @@ struct mlx4_update_qp_params { u16 rate_val; }; +struct mlx4_qp *mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn); int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn, enum mlx4_update_qp_attr attr, struct mlx4_update_qp_params *params); diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index 32de0724b400..edafedb7b509 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -766,6 +766,12 @@ enum { MLX5_CAP_PORT_TYPE_ETH = 0x1, }; +enum { + MLX5_CAP_UMR_FENCE_STRONG = 0x0, + MLX5_CAP_UMR_FENCE_SMALL = 0x1, + MLX5_CAP_UMR_FENCE_NONE = 0x2, +}; + struct mlx5_ifc_cmd_hca_cap_bits { u8 reserved_at_0[0x80]; @@ -875,7 +881,9 @@ struct mlx5_ifc_cmd_hca_cap_bits { u8 reserved_at_202[0x1]; u8 ipoib_enhanced_offloads[0x1]; u8 ipoib_basic_offloads[0x1]; - u8 reserved_at_205[0xa]; + u8 reserved_at_205[0x5]; + u8 umr_fence[0x2]; + u8 reserved_at_20c[0x3]; u8 drain_sigerr[0x1]; u8 cmdif_checksum[0x2]; u8 sigerr_cqe[0x1]; diff --git a/include/linux/mm.h b/include/linux/mm.h index 7cb17c6b97de..6f543a47fc92 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1393,12 +1393,6 @@ int clear_page_dirty_for_io(struct page *page); int get_cmdline(struct task_struct *task, char *buffer, int buflen); -/* Is the vma a continuation of the stack vma above it? */ -static inline int vma_growsdown(struct vm_area_struct *vma, unsigned long addr) -{ - return vma && (vma->vm_end == addr) && (vma->vm_flags & VM_GROWSDOWN); -} - static inline bool vma_is_anonymous(struct vm_area_struct *vma) { return !vma->vm_ops; @@ -1414,28 +1408,6 @@ bool vma_is_shmem(struct vm_area_struct *vma); static inline bool vma_is_shmem(struct vm_area_struct *vma) { return false; } #endif -static inline int stack_guard_page_start(struct vm_area_struct *vma, - unsigned long addr) -{ - return (vma->vm_flags & VM_GROWSDOWN) && - (vma->vm_start == addr) && - !vma_growsdown(vma->vm_prev, addr); -} - -/* Is the vma a continuation of the stack vma below it? */ -static inline int vma_growsup(struct vm_area_struct *vma, unsigned long addr) -{ - return vma && (vma->vm_start == addr) && (vma->vm_flags & VM_GROWSUP); -} - -static inline int stack_guard_page_end(struct vm_area_struct *vma, - unsigned long addr) -{ - return (vma->vm_flags & VM_GROWSUP) && - (vma->vm_end == addr) && - !vma_growsup(vma->vm_next, addr); -} - int vma_is_stack_for_current(struct vm_area_struct *vma); extern unsigned long move_page_tables(struct vm_area_struct *vma, @@ -2222,6 +2194,7 @@ void page_cache_async_readahead(struct address_space *mapping, pgoff_t offset, unsigned long size); +extern unsigned long stack_guard_gap; /* Generic expand stack which grows the stack according to GROWS{UP,DOWN} */ extern int expand_stack(struct vm_area_struct *vma, unsigned long address); @@ -2250,6 +2223,30 @@ static inline struct vm_area_struct * find_vma_intersection(struct mm_struct * m return vma; } +static inline unsigned long vm_start_gap(struct vm_area_struct *vma) +{ + unsigned long vm_start = vma->vm_start; + + if (vma->vm_flags & VM_GROWSDOWN) { + vm_start -= stack_guard_gap; + if (vm_start > vma->vm_start) + vm_start = 0; + } + return vm_start; +} + +static inline unsigned long vm_end_gap(struct vm_area_struct *vma) +{ + unsigned long vm_end = vma->vm_end; + + if (vma->vm_flags & VM_GROWSUP) { + vm_end += stack_guard_gap; + if (vm_end < vma->vm_end) + vm_end = -PAGE_SIZE; + } + return vm_end; +} + static inline unsigned long vma_pages(struct vm_area_struct *vma) { return (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; @@ -2327,6 +2324,17 @@ static inline struct page *follow_page(struct vm_area_struct *vma, #define FOLL_REMOTE 0x2000 /* we are working on non-current tsk/mm */ #define FOLL_COW 0x4000 /* internal GUP flag */ +static inline int vm_fault_to_errno(int vm_fault, int foll_flags) +{ + if (vm_fault & VM_FAULT_OOM) + return -ENOMEM; + if (vm_fault & (VM_FAULT_HWPOISON | VM_FAULT_HWPOISON_LARGE)) + return (foll_flags & FOLL_HWPOISON) ? -EHWPOISON : -EFAULT; + if (vm_fault & (VM_FAULT_SIGBUS | VM_FAULT_SIGSEGV)) + return -EFAULT; + return 0; +} + typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr, void *data); extern int apply_to_page_range(struct mm_struct *mm, unsigned long address, diff --git a/include/linux/mm_types_task.h b/include/linux/mm_types_task.h index 136dfdf63ba1..fc412fbd80bd 100644 --- a/include/linux/mm_types_task.h +++ b/include/linux/mm_types_task.h @@ -14,6 +14,10 @@ #include <asm/page.h> +#ifdef CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH +#include <asm/tlbbatch.h> +#endif + #define USE_SPLIT_PTE_PTLOCKS (NR_CPUS >= CONFIG_SPLIT_PTLOCK_CPUS) #define USE_SPLIT_PMD_PTLOCKS (USE_SPLIT_PTE_PTLOCKS && \ IS_ENABLED(CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK)) @@ -67,12 +71,15 @@ struct page_frag { struct tlbflush_unmap_batch { #ifdef CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH /* - * Each bit set is a CPU that potentially has a TLB entry for one of - * the PFNs being flushed. See set_tlb_ubc_flush_pending(). + * The arch code makes the following promise: generic code can modify a + * PTE, then call arch_tlbbatch_add_mm() (which internally provides all + * needed barriers), then call arch_tlbbatch_flush(), and the entries + * will be flushed on all CPUs by the time that arch_tlbbatch_flush() + * returns. */ - struct cpumask cpumask; + struct arch_tlbflush_unmap_batch arch; - /* True if any bit in cpumask is set */ + /* True if a flush is needed. */ bool flush_required; /* diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index aad015e0152b..46c73e97e61f 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -305,9 +305,7 @@ struct mmc_card { struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */ unsigned int nr_parts; - struct mmc_queue_req *mqrq; /* Shared queue structure */ unsigned int bouncesz; /* Bounce buffer size */ - int qdepth; /* Shared queue depth */ }; static inline bool mmc_large_sector(struct mmc_card *card) diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 21385ac0c9b1..ebd1cebbef0c 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -130,6 +130,7 @@ struct mmc_host_ops { int (*get_cd)(struct mmc_host *host); void (*enable_sdio_irq)(struct mmc_host *host, int enable); + void (*ack_sdio_irq)(struct mmc_host *host); /* optional callback for HC quirks */ void (*init_card)(struct mmc_host *host, struct mmc_card *card); @@ -184,6 +185,7 @@ struct mmc_async_req { */ struct mmc_slot { int cd_irq; + bool cd_wake_enabled; void *handler_priv; }; @@ -270,9 +272,11 @@ struct mmc_host { #define MMC_CAP_UHS_SDR50 (1 << 18) /* Host supports UHS SDR50 mode */ #define MMC_CAP_UHS_SDR104 (1 << 19) /* Host supports UHS SDR104 mode */ #define MMC_CAP_UHS_DDR50 (1 << 20) /* Host supports UHS DDR50 mode */ +#define MMC_CAP_NO_BOUNCE_BUFF (1 << 21) /* Disable bounce buffers on host */ #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */ #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */ #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */ +#define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */ #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */ #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ @@ -285,7 +289,6 @@ struct mmc_host { #define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */ #define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \ MMC_CAP2_HS200_1_2V_SDR) -#define MMC_CAP2_HC_ERASE_SZ (1 << 9) /* High-capacity erase size */ #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */ #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */ #define MMC_CAP2_PACKED_RD (1 << 12) /* Allow packed read */ @@ -358,6 +361,7 @@ struct mmc_host { unsigned int sdio_irqs; struct task_struct *sdio_irq_thread; + struct delayed_work sdio_irq_work; bool sdio_irq_pending; atomic_t sdio_irq_thread_abort; @@ -428,6 +432,7 @@ static inline void mmc_signal_sdio_irq(struct mmc_host *host) } void sdio_run_irqs(struct mmc_host *host); +void sdio_signal_irq(struct mmc_host *host); #ifdef CONFIG_REGULATOR int mmc_regulator_get_ocrmask(struct regulator *supply); diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index ebaccd4e7d8c..ef6a13b7bd3e 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -678,6 +678,7 @@ typedef struct pglist_data { * is the first PFN that needs to be initialised. */ unsigned long first_deferred_pfn; + unsigned long static_init_size; #endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */ #ifdef CONFIG_TRANSPARENT_HUGEPAGE diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index 566fda587fcf..3f74ef2281e8 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -467,6 +467,7 @@ enum dmi_field { DMI_PRODUCT_VERSION, DMI_PRODUCT_SERIAL, DMI_PRODUCT_UUID, + DMI_PRODUCT_FAMILY, DMI_BOARD_VENDOR, DMI_BOARD_NAME, DMI_BOARD_VERSION, diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h index 6be1949ebcdf..1ee7b30dafec 100644 --- a/include/linux/moduleparam.h +++ b/include/linux/moduleparam.h @@ -457,7 +457,7 @@ enum hwparam_type { hwparam_ioport, /* Module parameter configures an I/O port */ hwparam_iomem, /* Module parameter configures an I/O mem address */ hwparam_ioport_or_iomem, /* Module parameter could be either, depending on other option */ - hwparam_irq, /* Module parameter configures an I/O port */ + hwparam_irq, /* Module parameter configures an IRQ */ hwparam_dma, /* Module parameter configures a DMA channel */ hwparam_dma_addr, /* Module parameter configures a DMA buffer address */ hwparam_other, /* Module parameter configures some other value */ diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 8f67b1581683..de0d889e4fe1 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -785,7 +785,7 @@ struct nand_manufacturer_ops { * Minimum amount of bit errors per @ecc_step_ds guaranteed * to be correctable. If unknown, set to zero. * @ecc_step_ds: [INTERN] ECC step required by the @ecc_strength_ds, - * also from the datasheet. It is the recommended ECC step + * also from the datasheet. It is the recommended ECC step * size, if known; if unknown, set to zero. * @onfi_timing_mode_default: [INTERN] default ONFI timing mode. This field is * set to the actually used ONFI mode if the chip is diff --git a/include/linux/mutex.h b/include/linux/mutex.h index 1127fe31645d..ffcba1f337da 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -214,9 +214,9 @@ enum mutex_trylock_recursive_enum { * raisins, and once those are gone this will be removed. * * Returns: - * MUTEX_TRYLOCK_FAILED - trylock failed, - * MUTEX_TRYLOCK_SUCCESS - lock acquired, - * MUTEX_TRYLOCK_RECURSIVE - we already owned the lock. + * - MUTEX_TRYLOCK_FAILED - trylock failed, + * - MUTEX_TRYLOCK_SUCCESS - lock acquired, + * - MUTEX_TRYLOCK_RECURSIVE - we already owned the lock. */ static inline /* __deprecated */ __must_check enum mutex_trylock_recursive_enum mutex_trylock_recursive(struct mutex *lock) diff --git a/include/linux/mux/consumer.h b/include/linux/mux/consumer.h new file mode 100644 index 000000000000..5577e1b773c4 --- /dev/null +++ b/include/linux/mux/consumer.h @@ -0,0 +1,32 @@ +/* + * mux/consumer.h - definitions for the multiplexer consumer interface + * + * Copyright (C) 2017 Axentia Technologies AB + * + * Author: Peter Rosin <peda@axentia.se> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _LINUX_MUX_CONSUMER_H +#define _LINUX_MUX_CONSUMER_H + +struct device; +struct mux_control; + +unsigned int mux_control_states(struct mux_control *mux); +int __must_check mux_control_select(struct mux_control *mux, + unsigned int state); +int __must_check mux_control_try_select(struct mux_control *mux, + unsigned int state); +int mux_control_deselect(struct mux_control *mux); + +struct mux_control *mux_control_get(struct device *dev, const char *mux_name); +void mux_control_put(struct mux_control *mux); + +struct mux_control *devm_mux_control_get(struct device *dev, + const char *mux_name); + +#endif /* _LINUX_MUX_CONSUMER_H */ diff --git a/include/linux/mux/driver.h b/include/linux/mux/driver.h new file mode 100644 index 000000000000..35c3579c3304 --- /dev/null +++ b/include/linux/mux/driver.h @@ -0,0 +1,108 @@ +/* + * mux/driver.h - definitions for the multiplexer driver interface + * + * Copyright (C) 2017 Axentia Technologies AB + * + * Author: Peter Rosin <peda@axentia.se> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _LINUX_MUX_DRIVER_H +#define _LINUX_MUX_DRIVER_H + +#include <dt-bindings/mux/mux.h> +#include <linux/device.h> +#include <linux/semaphore.h> + +struct mux_chip; +struct mux_control; + +/** + * struct mux_control_ops - Mux controller operations for a mux chip. + * @set: Set the state of the given mux controller. + */ +struct mux_control_ops { + int (*set)(struct mux_control *mux, int state); +}; + +/** + * struct mux_control - Represents a mux controller. + * @lock: Protects the mux controller state. + * @chip: The mux chip that is handling this mux controller. + * @cached_state: The current mux controller state, or -1 if none. + * @states: The number of mux controller states. + * @idle_state: The mux controller state to use when inactive, or one + * of MUX_IDLE_AS_IS and MUX_IDLE_DISCONNECT. + * + * Mux drivers may only change @states and @idle_state, and may only do so + * between allocation and registration of the mux controller. Specifically, + * @cached_state is internal to the mux core and should never be written by + * mux drivers. + */ +struct mux_control { + struct semaphore lock; /* protects the state of the mux */ + + struct mux_chip *chip; + int cached_state; + + unsigned int states; + int idle_state; +}; + +/** + * struct mux_chip - Represents a chip holding mux controllers. + * @controllers: Number of mux controllers handled by the chip. + * @mux: Array of mux controllers that are handled. + * @dev: Device structure. + * @id: Used to identify the device internally. + * @ops: Mux controller operations. + */ +struct mux_chip { + unsigned int controllers; + struct mux_control *mux; + struct device dev; + int id; + + const struct mux_control_ops *ops; +}; + +#define to_mux_chip(x) container_of((x), struct mux_chip, dev) + +/** + * mux_chip_priv() - Get the extra memory reserved by mux_chip_alloc(). + * @mux_chip: The mux-chip to get the private memory from. + * + * Return: Pointer to the private memory reserved by the allocator. + */ +static inline void *mux_chip_priv(struct mux_chip *mux_chip) +{ + return &mux_chip->mux[mux_chip->controllers]; +} + +struct mux_chip *mux_chip_alloc(struct device *dev, + unsigned int controllers, size_t sizeof_priv); +int mux_chip_register(struct mux_chip *mux_chip); +void mux_chip_unregister(struct mux_chip *mux_chip); +void mux_chip_free(struct mux_chip *mux_chip); + +struct mux_chip *devm_mux_chip_alloc(struct device *dev, + unsigned int controllers, + size_t sizeof_priv); +int devm_mux_chip_register(struct device *dev, struct mux_chip *mux_chip); + +/** + * mux_control_get_index() - Get the index of the given mux controller + * @mux: The mux-control to get the index for. + * + * Return: The index of the mux controller within the mux chip the mux + * controller is a part of. + */ +static inline unsigned int mux_control_get_index(struct mux_control *mux) +{ + return mux - mux->chip->mux; +} + +#endif /* _LINUX_MUX_DRIVER_H */ diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 3f39d27decf4..24e88b33a06c 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -914,8 +914,7 @@ struct xfrmdev_ops { * * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); * Called when a user wants to change the Maximum Transfer Unit - * of a device. If not defined, any request to change MTU will - * will return an error. + * of a device. * * void (*ndo_tx_timeout)(struct net_device *dev); * Callback used when the transmitter has not made any progress @@ -1433,13 +1432,14 @@ enum netdev_priv_flags { /** * struct net_device - The DEVICE structure. - * Actually, this whole structure is a big mistake. It mixes I/O - * data with strictly "high-level" data, and it has to know about - * almost every data structure used in the INET module. + * + * Actually, this whole structure is a big mistake. It mixes I/O + * data with strictly "high-level" data, and it has to know about + * almost every data structure used in the INET module. * * @name: This is the first field of the "visible" part of this structure * (i.e. as seen by users in the "Space.c" file). It is the name - * of the interface. + * of the interface. * * @name_hlist: Device name hash chain, please keep it close to name[] * @ifalias: SNMP alias @@ -1596,8 +1596,8 @@ enum netdev_priv_flags { * @rtnl_link_state: This enum represents the phases of creating * a new link * - * @destructor: Called from unregister, - * can be used to call free_netdev + * @needs_free_netdev: Should unregister perform free_netdev? + * @priv_destructor: Called from unregister * @npinfo: XXX: need comments on this one * @nd_net: Network namespace this network device is inside * @@ -1858,7 +1858,8 @@ struct net_device { RTNL_LINK_INITIALIZING, } rtnl_link_state:16; - void (*destructor)(struct net_device *dev); + bool needs_free_netdev; + void (*priv_destructor)(struct net_device *dev); #ifdef CONFIG_NETPOLL struct netpoll_info __rcu *npinfo; @@ -4261,6 +4262,11 @@ static inline const char *netdev_name(const struct net_device *dev) return dev->name; } +static inline bool netdev_unregistering(const struct net_device *dev) +{ + return dev->reg_state == NETREG_UNREGISTERING; +} + static inline const char *netdev_reg_state(const struct net_device *dev) { switch (dev->reg_state) { diff --git a/include/linux/nvme-fc.h b/include/linux/nvme-fc.h index e997c4a49a88..bc711a10be05 100644 --- a/include/linux/nvme-fc.h +++ b/include/linux/nvme-fc.h @@ -177,7 +177,6 @@ struct fcnvme_lsdesc_rjt { }; -#define FCNVME_ASSOC_HOSTID_LEN 16 #define FCNVME_ASSOC_HOSTNQN_LEN 256 #define FCNVME_ASSOC_SUBNQN_LEN 256 @@ -191,7 +190,7 @@ struct fcnvme_lsdesc_cr_assoc_cmd { __be16 cntlid; __be16 sqsize; __be32 rsvd52; - u8 hostid[FCNVME_ASSOC_HOSTID_LEN]; + uuid_t hostid; u8 hostnqn[FCNVME_ASSOC_HOSTNQN_LEN]; u8 subnqn[FCNVME_ASSOC_SUBNQN_LEN]; u8 rsvd632[384]; diff --git a/include/linux/nvme.h b/include/linux/nvme.h index b625bacf37ef..6b8ee9e628e1 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -16,6 +16,7 @@ #define _LINUX_NVME_H #include <linux/types.h> +#include <linux/uuid.h> /* NQN names in commands fields specified one size */ #define NVMF_NQN_FIELD_LEN 256 @@ -86,7 +87,7 @@ enum { NVMF_RDMA_CMS_RDMA_CM = 1, /* Sockets based endpoint addressing */ }; -#define NVMF_AQ_DEPTH 32 +#define NVME_AQ_DEPTH 32 enum { NVME_REG_CAP = 0x0000, /* Controller Capabilities */ @@ -101,6 +102,7 @@ enum { NVME_REG_ACQ = 0x0030, /* Admin CQ Base Address */ NVME_REG_CMBLOC = 0x0038, /* Controller Memory Buffer Location */ NVME_REG_CMBSZ = 0x003c, /* Controller Memory Buffer Size */ + NVME_REG_DBS = 0x1000, /* SQ 0 Tail Doorbell */ }; #define NVME_CAP_MQES(cap) ((cap) & 0xffff) @@ -207,9 +209,15 @@ struct nvme_id_ctrl { __u8 tnvmcap[16]; __u8 unvmcap[16]; __le32 rpmbs; - __u8 rsvd316[4]; + __le16 edstt; + __u8 dsto; + __u8 fwug; __le16 kas; - __u8 rsvd322[190]; + __le16 hctma; + __le16 mntmt; + __le16 mxtmt; + __le32 sanicap; + __u8 rsvd332[180]; __u8 sqes; __u8 cqes; __le16 maxcmd; @@ -245,6 +253,7 @@ enum { NVME_CTRL_ONCS_WRITE_ZEROES = 1 << 3, NVME_CTRL_VWC_PRESENT = 1 << 0, NVME_CTRL_OACS_SEC_SUPP = 1 << 0, + NVME_CTRL_OACS_DIRECTIVES = 1 << 5, NVME_CTRL_OACS_DBBUF_SUPP = 1 << 7, }; @@ -274,7 +283,7 @@ struct nvme_id_ns { __le16 nabsn; __le16 nabo; __le16 nabspf; - __u16 rsvd46; + __le16 noiob; __u8 nvmcap[16]; __u8 rsvd64[40]; __u8 nguid[16]; @@ -288,6 +297,7 @@ enum { NVME_ID_CNS_NS = 0x00, NVME_ID_CNS_CTRL = 0x01, NVME_ID_CNS_NS_ACTIVE_LIST = 0x02, + NVME_ID_CNS_NS_DESC_LIST = 0x03, NVME_ID_CNS_NS_PRESENT_LIST = 0x10, NVME_ID_CNS_NS_PRESENT = 0x11, NVME_ID_CNS_CTRL_NS_LIST = 0x12, @@ -295,6 +305,19 @@ enum { }; enum { + NVME_DIR_IDENTIFY = 0x00, + NVME_DIR_STREAMS = 0x01, + NVME_DIR_SND_ID_OP_ENABLE = 0x01, + NVME_DIR_SND_ST_OP_REL_ID = 0x01, + NVME_DIR_SND_ST_OP_REL_RSC = 0x02, + NVME_DIR_RCV_ID_OP_PARAM = 0x01, + NVME_DIR_RCV_ST_OP_PARAM = 0x01, + NVME_DIR_RCV_ST_OP_STATUS = 0x02, + NVME_DIR_RCV_ST_OP_RESOURCE = 0x03, + NVME_DIR_ENDIR = 0x01, +}; + +enum { NVME_NS_FEAT_THIN = 1 << 0, NVME_NS_FLBAS_LBA_MASK = 0xf, NVME_NS_FLBAS_META_EXT = 0x10, @@ -314,6 +337,22 @@ enum { NVME_NS_DPS_PI_TYPE3 = 3, }; +struct nvme_ns_id_desc { + __u8 nidt; + __u8 nidl; + __le16 reserved; +}; + +#define NVME_NIDT_EUI64_LEN 8 +#define NVME_NIDT_NGUID_LEN 16 +#define NVME_NIDT_UUID_LEN 16 + +enum { + NVME_NIDT_EUI64 = 0x01, + NVME_NIDT_NGUID = 0x02, + NVME_NIDT_UUID = 0x03, +}; + struct nvme_smart_log { __u8 critical_warning; __u8 temperature[2]; @@ -535,6 +574,7 @@ enum { NVME_RW_PRINFO_PRCHK_APP = 1 << 11, NVME_RW_PRINFO_PRCHK_GUARD = 1 << 12, NVME_RW_PRINFO_PRACT = 1 << 13, + NVME_RW_DTYPE_STREAMS = 1 << 4, }; struct nvme_dsm_cmd { @@ -586,6 +626,11 @@ struct nvme_feat_auto_pst { __le64 entries[32]; }; +enum { + NVME_HOST_MEM_ENABLE = (1 << 0), + NVME_HOST_MEM_RETURN = (1 << 1), +}; + /* Admin commands */ enum nvme_admin_opcode { @@ -604,6 +649,8 @@ enum nvme_admin_opcode { nvme_admin_download_fw = 0x11, nvme_admin_ns_attach = 0x15, nvme_admin_keep_alive = 0x18, + nvme_admin_directive_send = 0x19, + nvme_admin_directive_recv = 0x1a, nvme_admin_dbbuf = 0x7C, nvme_admin_format_nvm = 0x80, nvme_admin_security_send = 0x81, @@ -658,6 +705,8 @@ struct nvme_identify { __u32 rsvd11[5]; }; +#define NVME_IDENTIFY_DATA_SIZE 4096 + struct nvme_features { __u8 opcode; __u8 flags; @@ -667,7 +716,16 @@ struct nvme_features { union nvme_data_ptr dptr; __le32 fid; __le32 dword11; - __u32 rsvd12[4]; + __le32 dword12; + __le32 dword13; + __le32 dword14; + __le32 dword15; +}; + +struct nvme_host_mem_buf_desc { + __le64 addr; + __le32 size; + __u32 rsvd; }; struct nvme_create_cq { @@ -756,6 +814,24 @@ struct nvme_get_log_page_command { __u32 rsvd14[2]; }; +struct nvme_directive_cmd { + __u8 opcode; + __u8 flags; + __u16 command_id; + __le32 nsid; + __u64 rsvd2[2]; + union nvme_data_ptr dptr; + __le32 numd; + __u8 doper; + __u8 dtype; + __le16 dspec; + __u8 endir; + __u8 tdtype; + __u16 rsvd15; + + __u32 rsvd16[3]; +}; + /* * Fabrics subcommands. */ @@ -843,7 +919,7 @@ struct nvmf_connect_command { }; struct nvmf_connect_data { - __u8 hostid[16]; + uuid_t hostid; __le16 cntlid; char resv4[238]; char subsysnqn[NVMF_NQN_FIELD_LEN]; @@ -886,6 +962,18 @@ struct nvme_dbbuf { __u32 rsvd12[6]; }; +struct streams_directive_params { + __u16 msl; + __u16 nssa; + __u16 nsso; + __u8 rsvd[10]; + __u32 sws; + __u16 sgs; + __u16 nsa; + __u16 nso; + __u8 rsvd2[6]; +}; + struct nvme_command { union { struct nvme_common_command common; @@ -906,6 +994,7 @@ struct nvme_command { struct nvmf_property_set_command prop_set; struct nvmf_property_get_command prop_get; struct nvme_dbbuf dbbuf; + struct nvme_directive_cmd directive; }; }; @@ -1050,4 +1139,8 @@ struct nvme_completion { #define NVME_VS(major, minor, tertiary) \ (((major) << 16) | ((minor) << 8) | (tertiary)) +#define NVME_MAJOR(ver) ((ver) >> 16) +#define NVME_MINOR(ver) (((ver) >> 8) & 0xff) +#define NVME_TERTIARY(ver) ((ver) & 0xff) + #endif /* _LINUX_NVME_H */ diff --git a/include/linux/padata.h b/include/linux/padata.h index 0f9e567d5e15..2f9c1f93b1ce 100644 --- a/include/linux/padata.h +++ b/include/linux/padata.h @@ -166,9 +166,6 @@ struct padata_instance { extern struct padata_instance *padata_alloc_possible( struct workqueue_struct *wq); -extern struct padata_instance *padata_alloc(struct workqueue_struct *wq, - const struct cpumask *pcpumask, - const struct cpumask *cbcpumask); extern void padata_free(struct padata_instance *pinst); extern int padata_do_parallel(struct padata_instance *pinst, struct padata_priv *padata, int cb_cpu); diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 316a19f6b635..e7bbd9d4dc6c 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -524,7 +524,7 @@ void page_endio(struct page *page, bool is_write, int err); /* * Add an arbitrary waiter to a page's wait queue */ -extern void add_page_wait_queue(struct page *page, wait_queue_t *waiter); +extern void add_page_wait_queue(struct page *page, wait_queue_entry_t *waiter); /* * Fault everything in given userspace address range in. diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h index 7a4e83a8c89c..dd86c97f2454 100644 --- a/include/linux/pci-acpi.h +++ b/include/linux/pci-acpi.h @@ -105,7 +105,7 @@ static inline void acpiphp_remove_slots(struct pci_bus *bus) { } static inline void acpiphp_check_host_bridge(struct acpi_device *adev) { } #endif -extern const u8 pci_acpi_dsm_uuid[]; +extern const guid_t pci_acpi_dsm_guid; #define DEVICE_LABEL_DSM 0x07 #define RESET_DELAY_DSM 0x08 #define FUNCTION_DELAY_DSM 0x09 diff --git a/include/linux/pci.h b/include/linux/pci.h index 8039f9f0ca05..1ef093866581 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -307,7 +307,6 @@ struct pci_dev { u8 pm_cap; /* PM capability offset */ unsigned int pme_support:5; /* Bitmask of states from which PME# can be generated */ - unsigned int pme_interrupt:1; unsigned int pme_poll:1; /* Poll device's PME status bit */ unsigned int d1_support:1; /* Low power state D1 is supported */ unsigned int d2_support:1; /* Low power state D2 is supported */ @@ -376,6 +375,7 @@ struct pci_dev { unsigned int irq_managed:1; unsigned int has_secondary_link:1; unsigned int non_compliant_bars:1; /* broken BARs; ignore them */ + unsigned int is_probed:1; /* device probing in progress */ pci_dev_flags_t dev_flags; atomic_t enable_cnt; /* pci_enable_device has been called */ @@ -1098,8 +1098,7 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state); pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); void pci_pme_active(struct pci_dev *dev, bool enable); -int __pci_enable_wake(struct pci_dev *dev, pci_power_t state, - bool runtime, bool enable); +int pci_enable_wake(struct pci_dev *dev, pci_power_t state, bool enable); int pci_wake_from_d3(struct pci_dev *dev, bool enable); int pci_prepare_to_sleep(struct pci_dev *dev); int pci_back_from_sleep(struct pci_dev *dev); @@ -1109,12 +1108,6 @@ void pci_pme_wakeup_bus(struct pci_bus *bus); void pci_d3cold_enable(struct pci_dev *dev); void pci_d3cold_disable(struct pci_dev *dev); -static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, - bool enable) -{ - return __pci_enable_wake(dev, state, false, enable); -} - /* PCI Virtual Channel */ int pci_save_vc_state(struct pci_dev *dev); void pci_restore_vc_state(struct pci_dev *dev); diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 24a635887f28..7d6aa29094b2 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -801,6 +801,8 @@ struct perf_cpu_context { struct list_head sched_cb_entry; int sched_cb_usage; + + int online; }; struct perf_output_handle { diff --git a/include/linux/phy/ulpi_phy.h b/include/linux/phy/ulpi_phy.h new file mode 100644 index 000000000000..f2ebe490a4bc --- /dev/null +++ b/include/linux/phy/ulpi_phy.h @@ -0,0 +1,31 @@ +#include <linux/phy/phy.h> + +/** + * Helper that registers PHY for a ULPI device and adds a lookup for binding it + * and it's controller, which is always the parent. + */ +static inline struct phy +*ulpi_phy_create(struct ulpi *ulpi, const struct phy_ops *ops) +{ + struct phy *phy; + int ret; + + phy = phy_create(&ulpi->dev, NULL, ops); + if (IS_ERR(phy)) + return phy; + + ret = phy_create_lookup(phy, "usb2-phy", dev_name(ulpi->dev.parent)); + if (ret) { + phy_destroy(phy); + return ERR_PTR(ret); + } + + return phy; +} + +/* Remove a PHY that was created with ulpi_phy_create() and it's lookup. */ +static inline void ulpi_phy_destroy(struct ulpi *ulpi, struct phy *phy) +{ + phy_remove_lookup(phy, "usb2-phy", dev_name(ulpi->dev.parent)); + phy_destroy(phy); +} diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index 279e3c5326e3..7620eb127cff 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -42,8 +42,6 @@ * @PIN_CONFIG_BIAS_PULL_UP: the pin will be pulled up (usually with high * impedance to VDD). If the argument is != 0 pull-up is enabled, * if it is 0, pull-up is total, i.e. the pin is connected to VDD. - * @PIN_CONFIG_BIDIRECTIONAL: the pin will be configured to allow simultaneous - * input and output operations. * @PIN_CONFIG_DRIVE_OPEN_DRAIN: the pin will be driven with open drain (open * collector) which means it is usually wired with other output ports * which are then pulled up with an external resistor. Setting this @@ -98,7 +96,6 @@ enum pin_config_param { PIN_CONFIG_BIAS_PULL_DOWN, PIN_CONFIG_BIAS_PULL_PIN_DEFAULT, PIN_CONFIG_BIAS_PULL_UP, - PIN_CONFIG_BIDIRECTIONAL, PIN_CONFIG_DRIVE_OPEN_DRAIN, PIN_CONFIG_DRIVE_OPEN_SOURCE, PIN_CONFIG_DRIVE_PUSH_PULL, diff --git a/include/linux/i2c/ads1015.h b/include/linux/platform_data/ads1015.h index d5aa2a045669..d5aa2a045669 100644 --- a/include/linux/i2c/ads1015.h +++ b/include/linux/platform_data/ads1015.h diff --git a/include/linux/i2c/apds990x.h b/include/linux/platform_data/apds990x.h index d186fcc5d257..d186fcc5d257 100644 --- a/include/linux/i2c/apds990x.h +++ b/include/linux/platform_data/apds990x.h diff --git a/include/linux/platform_data/atmel.h b/include/linux/platform_data/atmel.h index 3c8825b67298..cdceb4d4ef9d 100644 --- a/include/linux/platform_data/atmel.h +++ b/include/linux/platform_data/atmel.h @@ -7,10 +7,6 @@ #ifndef __ATMEL_H__ #define __ATMEL_H__ -#include <linux/mtd/nand.h> -#include <linux/mtd/partitions.h> -#include <linux/serial.h> - /* Compact Flash */ struct at91_cf_data { int irq_pin; /* I/O IRQ */ @@ -23,35 +19,14 @@ struct at91_cf_data { #define AT91_IDE_SWAP_A0_A2 0x02 }; - /* NAND / SmartMedia */ -struct atmel_nand_data { - int enable_pin; /* chip enable */ - int det_pin; /* card detect */ - int rdy_pin; /* ready/busy */ - u8 rdy_pin_active_low; /* rdy_pin value is inverted */ - u8 ale; /* address line number connected to ALE */ - u8 cle; /* address line number connected to CLE */ - u8 bus_width_16; /* buswidth is 16 bit */ - u8 ecc_mode; /* ecc mode */ - u8 on_flash_bbt; /* bbt on flash */ - struct mtd_partition *parts; - unsigned int num_parts; - bool has_dma; /* support dma transfer */ - - /* default is false, only for at32ap7000 chip is true */ - bool need_reset_workaround; -}; - - /* Serial */ -struct atmel_uart_data { - int num; /* port num */ - short use_dma_tx; /* use transmit DMA? */ - short use_dma_rx; /* use receive DMA? */ - void __iomem *regs; /* virt. base address, if any */ - struct serial_rs485 rs485; /* rs485 settings */ -}; - /* FIXME: this needs a better location, but gets stuff building again */ +#ifdef CONFIG_ATMEL_PM extern int at91_suspend_entering_slow_clock(void); +#else +static inline int at91_suspend_entering_slow_clock(void) +{ + return 0; +} +#endif #endif /* __ATMEL_H__ */ diff --git a/include/linux/i2c/bh1770glc.h b/include/linux/platform_data/bh1770glc.h index 8b5e2df36c72..8b5e2df36c72 100644 --- a/include/linux/i2c/bh1770glc.h +++ b/include/linux/platform_data/bh1770glc.h diff --git a/include/linux/i2c/ds620.h b/include/linux/platform_data/ds620.h index 736bb87ac0fc..736bb87ac0fc 100644 --- a/include/linux/i2c/ds620.h +++ b/include/linux/platform_data/ds620.h diff --git a/include/linux/i2c/ltc4245.h b/include/linux/platform_data/ltc4245.h index 56bda4be0016..56bda4be0016 100644 --- a/include/linux/i2c/ltc4245.h +++ b/include/linux/platform_data/ltc4245.h diff --git a/include/linux/i2c/max6639.h b/include/linux/platform_data/max6639.h index 6011c42034da..6011c42034da 100644 --- a/include/linux/i2c/max6639.h +++ b/include/linux/platform_data/max6639.h diff --git a/include/linux/platform_data/spi-mt65xx.h b/include/linux/platform_data/spi-mt65xx.h index 54b04483976c..ba4e4bb70262 100644 --- a/include/linux/platform_data/spi-mt65xx.h +++ b/include/linux/platform_data/spi-mt65xx.h @@ -16,5 +16,7 @@ struct mtk_chip_config { u32 tx_mlsb; u32 rx_mlsb; + u32 cs_pol; + u32 sample_sel; }; #endif diff --git a/include/linux/pm.h b/include/linux/pm.h index a0894bc52bb4..b8b4df09fd8f 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -584,7 +584,6 @@ struct dev_pm_info { unsigned int idle_notification:1; unsigned int request_pending:1; unsigned int deferred_resume:1; - unsigned int run_wake:1; unsigned int runtime_auto:1; bool ignore_children:1; unsigned int no_callbacks:1; diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index b7803a251044..41004d97cefa 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -206,9 +206,13 @@ static inline void pm_genpd_syscore_poweron(struct device *dev) {} /* OF PM domain providers */ struct of_device_id; +typedef struct generic_pm_domain *(*genpd_xlate_t)(struct of_phandle_args *args, + void *data); + struct genpd_onecell_data { struct generic_pm_domain **domains; unsigned int num_domains; + genpd_xlate_t xlate; }; #ifdef CONFIG_PM_GENERIC_DOMAINS_OF diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index a6685b3dde26..51ec727b4824 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -121,6 +121,8 @@ struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name) void dev_pm_opp_put_prop_name(struct opp_table *opp_table); struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count); void dev_pm_opp_put_regulators(struct opp_table *opp_table); +struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name); +void dev_pm_opp_put_clkname(struct opp_table *opp_table); struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data)); void dev_pm_opp_register_put_opp_helper(struct opp_table *opp_table); int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq); @@ -257,6 +259,13 @@ static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, co static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {} +static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char * name) +{ + return ERR_PTR(-ENOTSUPP); +} + +static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {} + static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) { return -ENOTSUPP; diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index ca4823e675e2..2efb08a60e63 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -76,16 +76,6 @@ static inline void pm_runtime_put_noidle(struct device *dev) atomic_add_unless(&dev->power.usage_count, -1, 0); } -static inline bool device_run_wake(struct device *dev) -{ - return dev->power.run_wake; -} - -static inline void device_set_run_wake(struct device *dev, bool enable) -{ - dev->power.run_wake = enable; -} - static inline bool pm_runtime_suspended(struct device *dev) { return dev->power.runtime_status == RPM_SUSPENDED @@ -163,8 +153,6 @@ static inline void pm_runtime_forbid(struct device *dev) {} static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {} static inline void pm_runtime_get_noresume(struct device *dev) {} static inline void pm_runtime_put_noidle(struct device *dev) {} -static inline bool device_run_wake(struct device *dev) { return false; } -static inline void device_set_run_wake(struct device *dev, bool enable) {} static inline bool pm_runtime_suspended(struct device *dev) { return false; } static inline bool pm_runtime_active(struct device *dev) { return true; } static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } diff --git a/include/linux/i2c/pmbus.h b/include/linux/pmbus.h index ee3c2aba2a8e..ee3c2aba2a8e 100644 --- a/include/linux/i2c/pmbus.h +++ b/include/linux/pmbus.h diff --git a/include/linux/poll.h b/include/linux/poll.h index 75ffc5729e4c..2889f09a1c60 100644 --- a/include/linux/poll.h +++ b/include/linux/poll.h @@ -75,7 +75,7 @@ static inline void init_poll_funcptr(poll_table *pt, poll_queue_proc qproc) struct poll_table_entry { struct file *filp; unsigned long key; - wait_queue_t wait; + wait_queue_entry_t wait; wait_queue_head_t *wait_address; }; diff --git a/include/linux/posix-clock.h b/include/linux/posix-clock.h index 83b22ae9ae12..38d8225510f1 100644 --- a/include/linux/posix-clock.h +++ b/include/linux/posix-clock.h @@ -42,12 +42,6 @@ struct posix_clock; * @clock_gettime: Read the current time * @clock_getres: Get the clock resolution * @clock_settime: Set the current time value - * @timer_create: Create a new timer - * @timer_delete: Remove a previously created timer - * @timer_gettime: Get remaining time and interval of a timer - * @timer_settime: Set a timer's initial expiration and interval - * @fasync: Optional character device fasync method - * @mmap: Optional character device mmap method * @open: Optional character device open method * @release: Optional character device release method * @ioctl: Optional character device ioctl method @@ -66,28 +60,12 @@ struct posix_clock_operations { int (*clock_settime)(struct posix_clock *pc, const struct timespec64 *ts); - int (*timer_create) (struct posix_clock *pc, struct k_itimer *kit); - - int (*timer_delete) (struct posix_clock *pc, struct k_itimer *kit); - - void (*timer_gettime)(struct posix_clock *pc, - struct k_itimer *kit, struct itimerspec64 *tsp); - - int (*timer_settime)(struct posix_clock *pc, - struct k_itimer *kit, int flags, - struct itimerspec64 *tsp, struct itimerspec64 *old); /* * Optional character device methods: */ - int (*fasync) (struct posix_clock *pc, - int fd, struct file *file, int on); - long (*ioctl) (struct posix_clock *pc, unsigned int cmd, unsigned long arg); - int (*mmap) (struct posix_clock *pc, - struct vm_area_struct *vma); - int (*open) (struct posix_clock *pc, fmode_t f_mode); uint (*poll) (struct posix_clock *pc, diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h index 8c1e43ab14a9..29f1b7f09ced 100644 --- a/include/linux/posix-timers.h +++ b/include/linux/posix-timers.h @@ -7,6 +7,7 @@ #include <linux/timex.h> #include <linux/alarmtimer.h> +struct siginfo; struct cpu_timer_list { struct list_head entry; @@ -48,81 +49,69 @@ struct cpu_timer_list { #define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD) #define CLOCKID_TO_FD(clk) ((unsigned int) ~((clk) >> 3)) -/* POSIX.1b interval timer structure. */ -struct k_itimer { - struct list_head list; /* free/ allocate list */ - struct hlist_node t_hash; - spinlock_t it_lock; - clockid_t it_clock; /* which timer type */ - timer_t it_id; /* timer id */ - int it_overrun; /* overrun on pending signal */ - int it_overrun_last; /* overrun on last delivered signal */ - int it_requeue_pending; /* waiting to requeue this timer */ #define REQUEUE_PENDING 1 - int it_sigev_notify; /* notify word of sigevent struct */ - struct signal_struct *it_signal; + +/** + * struct k_itimer - POSIX.1b interval timer structure. + * @list: List head for binding the timer to signals->posix_timers + * @t_hash: Entry in the posix timer hash table + * @it_lock: Lock protecting the timer + * @kclock: Pointer to the k_clock struct handling this timer + * @it_clock: The posix timer clock id + * @it_id: The posix timer id for identifying the timer + * @it_active: Marker that timer is active + * @it_overrun: The overrun counter for pending signals + * @it_overrun_last: The overrun at the time of the last delivered signal + * @it_requeue_pending: Indicator that timer waits for being requeued on + * signal delivery + * @it_sigev_notify: The notify word of sigevent struct for signal delivery + * @it_interval: The interval for periodic timers + * @it_signal: Pointer to the creators signal struct + * @it_pid: The pid of the process/task targeted by the signal + * @it_process: The task to wakeup on clock_nanosleep (CPU timers) + * @sigq: Pointer to preallocated sigqueue + * @it: Union representing the various posix timer type + * internals. Also used for rcu freeing the timer. + */ +struct k_itimer { + struct list_head list; + struct hlist_node t_hash; + spinlock_t it_lock; + const struct k_clock *kclock; + clockid_t it_clock; + timer_t it_id; + int it_active; + int it_overrun; + int it_overrun_last; + int it_requeue_pending; + int it_sigev_notify; + ktime_t it_interval; + struct signal_struct *it_signal; union { - struct pid *it_pid; /* pid of process to send signal to */ - struct task_struct *it_process; /* for clock_nanosleep */ + struct pid *it_pid; + struct task_struct *it_process; }; - struct sigqueue *sigq; /* signal queue entry. */ + struct sigqueue *sigq; union { struct { - struct hrtimer timer; - ktime_t interval; + struct hrtimer timer; } real; - struct cpu_timer_list cpu; + struct cpu_timer_list cpu; struct { - unsigned int clock; - unsigned int node; - unsigned long incr; - unsigned long expires; - } mmtimer; - struct { - struct alarm alarmtimer; - ktime_t interval; + struct alarm alarmtimer; } alarm; - struct rcu_head rcu; + struct rcu_head rcu; } it; }; -struct k_clock { - int (*clock_getres) (const clockid_t which_clock, struct timespec64 *tp); - int (*clock_set) (const clockid_t which_clock, - const struct timespec64 *tp); - int (*clock_get) (const clockid_t which_clock, struct timespec64 *tp); - int (*clock_adj) (const clockid_t which_clock, struct timex *tx); - int (*timer_create) (struct k_itimer *timer); - int (*nsleep) (const clockid_t which_clock, int flags, - struct timespec64 *, struct timespec __user *); - long (*nsleep_restart) (struct restart_block *restart_block); - int (*timer_set) (struct k_itimer *timr, int flags, - struct itimerspec64 *new_setting, - struct itimerspec64 *old_setting); - int (*timer_del) (struct k_itimer *timr); -#define TIMER_RETRY 1 - void (*timer_get) (struct k_itimer *timr, - struct itimerspec64 *cur_setting); -}; - -extern struct k_clock clock_posix_cpu; -extern struct k_clock clock_posix_dynamic; - -void posix_timers_register_clock(const clockid_t clock_id, struct k_clock *new_clock); - -/* function to call to trigger timer event */ -int posix_timer_event(struct k_itimer *timr, int si_private); - -void posix_cpu_timer_schedule(struct k_itimer *timer); - void run_posix_cpu_timers(struct task_struct *task); void posix_cpu_timers_exit(struct task_struct *task); void posix_cpu_timers_exit_group(struct task_struct *task); void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx, u64 *newval, u64 *oldval); -long clock_nanosleep_restart(struct restart_block *restart_block); - void update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new); +void posixtimer_rearm(struct siginfo *info); + #endif diff --git a/include/linux/power/bq27xxx_battery.h b/include/linux/power/bq27xxx_battery.h index b312bcef53da..11e11685dd1d 100644 --- a/include/linux/power/bq27xxx_battery.h +++ b/include/linux/power/bq27xxx_battery.h @@ -40,6 +40,9 @@ struct bq27xxx_platform_data { struct bq27xxx_device_info; struct bq27xxx_access_methods { int (*read)(struct bq27xxx_device_info *di, u8 reg, bool single); + int (*write)(struct bq27xxx_device_info *di, u8 reg, int value, bool single); + int (*read_bulk)(struct bq27xxx_device_info *di, u8 reg, u8 *data, int len); + int (*write_bulk)(struct bq27xxx_device_info *di, u8 reg, u8 *data, int len); }; struct bq27xxx_reg_cache { @@ -60,7 +63,10 @@ struct bq27xxx_device_info { struct device *dev; int id; enum bq27xxx_chip chip; + bool ram_chip; const char *name; + struct bq27xxx_dm_reg *dm_regs; + u32 unseal_key; struct bq27xxx_access_methods bus; struct bq27xxx_reg_cache cache; int charge_design_full; diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 3965503315ef..de89066b72b1 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -146,6 +146,7 @@ enum power_supply_property { POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */ POWER_SUPPLY_PROP_SCOPE, + POWER_SUPPLY_PROP_PRECHARGE_CURRENT, POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, POWER_SUPPLY_PROP_CALIBRATE, /* Properties of type `const char *' */ @@ -159,13 +160,14 @@ enum power_supply_type { POWER_SUPPLY_TYPE_BATTERY, POWER_SUPPLY_TYPE_UPS, POWER_SUPPLY_TYPE_MAINS, - POWER_SUPPLY_TYPE_USB, /* Standard Downstream Port */ - POWER_SUPPLY_TYPE_USB_DCP, /* Dedicated Charging Port */ - POWER_SUPPLY_TYPE_USB_CDP, /* Charging Downstream Port */ - POWER_SUPPLY_TYPE_USB_ACA, /* Accessory Charger Adapters */ - POWER_SUPPLY_TYPE_USB_TYPE_C, /* Type C Port */ - POWER_SUPPLY_TYPE_USB_PD, /* Power Delivery Port */ - POWER_SUPPLY_TYPE_USB_PD_DRP, /* PD Dual Role Port */ + POWER_SUPPLY_TYPE_USB, /* Standard Downstream Port */ + POWER_SUPPLY_TYPE_USB_DCP, /* Dedicated Charging Port */ + POWER_SUPPLY_TYPE_USB_CDP, /* Charging Downstream Port */ + POWER_SUPPLY_TYPE_USB_ACA, /* Accessory Charger Adapters */ + POWER_SUPPLY_TYPE_USB_TYPE_C, /* Type C Port */ + POWER_SUPPLY_TYPE_USB_PD, /* Power Delivery Port */ + POWER_SUPPLY_TYPE_USB_PD_DRP, /* PD Dual Role Port */ + POWER_SUPPLY_TYPE_APPLE_BRICK_ID, /* Apple Charging Method */ }; enum power_supply_notifier_events { @@ -288,6 +290,25 @@ struct power_supply_info { int use_for_apm; }; +/* + * This is the recommended struct to manage static battery parameters, + * populated by power_supply_get_battery_info(). Most platform drivers should + * use these for consistency. + * Its field names must correspond to elements in enum power_supply_property. + * The default field value is -EINVAL. + * Power supply class itself doesn't use this. + */ + +struct power_supply_battery_info { + int energy_full_design_uwh; /* microWatt-hours */ + int charge_full_design_uah; /* microAmp-hours */ + int voltage_min_design_uv; /* microVolts */ + int precharge_current_ua; /* microAmps */ + int charge_term_current_ua; /* microAmps */ + int constant_charge_current_max_ua; /* microAmps */ + int constant_charge_voltage_max_uv; /* microVolts */ +}; + extern struct atomic_notifier_head power_supply_notifier; extern int power_supply_reg_notifier(struct notifier_block *nb); extern void power_supply_unreg_notifier(struct notifier_block *nb); @@ -306,6 +327,9 @@ static inline struct power_supply * devm_power_supply_get_by_phandle(struct device *dev, const char *property) { return NULL; } #endif /* CONFIG_OF */ + +extern int power_supply_get_battery_info(struct power_supply *psy, + struct power_supply_battery_info *info); extern void power_supply_changed(struct power_supply *psy); extern int power_supply_am_i_supplied(struct power_supply *psy); extern int power_supply_set_battery_charged(struct power_supply *psy); @@ -359,6 +383,8 @@ static inline bool power_supply_is_amp_property(enum power_supply_property psp) case POWER_SUPPLY_PROP_CHARGE_NOW: case POWER_SUPPLY_PROP_CHARGE_AVG: case POWER_SUPPLY_PROP_CHARGE_COUNTER: + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: case POWER_SUPPLY_PROP_CURRENT_MAX: diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index ef3eb8bbfee4..0e5fcc11b1b8 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -391,10 +391,6 @@ static inline void user_single_step_siginfo(struct task_struct *tsk, #define current_pt_regs() task_pt_regs(current) #endif -#ifndef ptrace_signal_deliver -#define ptrace_signal_deliver() ((void)0) -#endif - /* * unlike current_pt_regs(), this one is equal to task_pt_regs(current) * on *all* architectures; the only reason to have a per-arch definition diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h index a0522328d7aa..8461b18e4608 100644 --- a/include/linux/pxa2xx_ssp.h +++ b/include/linux/pxa2xx_ssp.h @@ -196,6 +196,7 @@ enum pxa_ssp_type { LPSS_BSW_SSP, LPSS_SPT_SSP, LPSS_BXT_SSP, + LPSS_CNL_SSP, }; struct ssp_device { diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index 9c6f768b7d32..dda22f45fc1b 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -44,6 +44,7 @@ void inode_sub_rsv_space(struct inode *inode, qsize_t number); void inode_reclaim_rsv_space(struct inode *inode, qsize_t number); int dquot_initialize(struct inode *inode); +bool dquot_initialize_needed(struct inode *inode); void dquot_drop(struct inode *inode); struct dquot *dqget(struct super_block *sb, struct kqid qid); static inline struct dquot *dqgrab(struct dquot *dquot) @@ -207,6 +208,11 @@ static inline int dquot_initialize(struct inode *inode) return 0; } +static inline bool dquot_initialize_needed(struct inode *inode) +{ + return false; +} + static inline void dquot_drop(struct inode *inode) { } diff --git a/include/linux/rcu_node_tree.h b/include/linux/rcu_node_tree.h index 4b766b61e1a0..426cee67f0e2 100644 --- a/include/linux/rcu_node_tree.h +++ b/include/linux/rcu_node_tree.h @@ -7,6 +7,10 @@ * unlimited scalability while maintaining a constant level of contention * on the root node. * + * This seemingly RCU-private file must be available to SRCU users + * because the size of the TREE SRCU srcu_struct structure depends + * on these definitions. + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or diff --git a/include/linux/rcu_segcblist.h b/include/linux/rcu_segcblist.h index ba4d2621d9ca..c3ad00e63556 100644 --- a/include/linux/rcu_segcblist.h +++ b/include/linux/rcu_segcblist.h @@ -1,6 +1,10 @@ /* * RCU segmented callback lists * + * This seemingly RCU-private file must be available to SRCU users + * because the size of the TREE SRCU srcu_struct structure depends + * on these definitions. + * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index e1e5d002fdb9..f816fc72b51e 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -34,104 +34,15 @@ #define __LINUX_RCUPDATE_H #include <linux/types.h> -#include <linux/cache.h> -#include <linux/spinlock.h> -#include <linux/threads.h> -#include <linux/cpumask.h> -#include <linux/seqlock.h> -#include <linux/lockdep.h> -#include <linux/debugobjects.h> -#include <linux/bug.h> #include <linux/compiler.h> -#include <linux/ktime.h> +#include <linux/atomic.h> #include <linux/irqflags.h> +#include <linux/preempt.h> +#include <linux/bottom_half.h> +#include <linux/lockdep.h> +#include <asm/processor.h> +#include <linux/cpumask.h> -#include <asm/barrier.h> - -#ifndef CONFIG_TINY_RCU -extern int rcu_expedited; /* for sysctl */ -extern int rcu_normal; /* also for sysctl */ -#endif /* #ifndef CONFIG_TINY_RCU */ - -#ifdef CONFIG_TINY_RCU -/* Tiny RCU doesn't expedite, as its purpose in life is instead to be tiny. */ -static inline bool rcu_gp_is_normal(void) /* Internal RCU use. */ -{ - return true; -} -static inline bool rcu_gp_is_expedited(void) /* Internal RCU use. */ -{ - return false; -} - -static inline void rcu_expedite_gp(void) -{ -} - -static inline void rcu_unexpedite_gp(void) -{ -} -#else /* #ifdef CONFIG_TINY_RCU */ -bool rcu_gp_is_normal(void); /* Internal RCU use. */ -bool rcu_gp_is_expedited(void); /* Internal RCU use. */ -void rcu_expedite_gp(void); -void rcu_unexpedite_gp(void); -#endif /* #else #ifdef CONFIG_TINY_RCU */ - -enum rcutorture_type { - RCU_FLAVOR, - RCU_BH_FLAVOR, - RCU_SCHED_FLAVOR, - RCU_TASKS_FLAVOR, - SRCU_FLAVOR, - INVALID_RCU_FLAVOR -}; - -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) -void rcutorture_get_gp_data(enum rcutorture_type test_type, int *flags, - unsigned long *gpnum, unsigned long *completed); -void rcutorture_record_test_transition(void); -void rcutorture_record_progress(unsigned long vernum); -void do_trace_rcu_torture_read(const char *rcutorturename, - struct rcu_head *rhp, - unsigned long secs, - unsigned long c_old, - unsigned long c); -bool rcu_irq_enter_disabled(void); -#else -static inline void rcutorture_get_gp_data(enum rcutorture_type test_type, - int *flags, - unsigned long *gpnum, - unsigned long *completed) -{ - *flags = 0; - *gpnum = 0; - *completed = 0; -} -static inline void rcutorture_record_test_transition(void) -{ -} -static inline void rcutorture_record_progress(unsigned long vernum) -{ -} -static inline bool rcu_irq_enter_disabled(void) -{ - return false; -} -#ifdef CONFIG_RCU_TRACE -void do_trace_rcu_torture_read(const char *rcutorturename, - struct rcu_head *rhp, - unsigned long secs, - unsigned long c_old, - unsigned long c); -#else -#define do_trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ - do { } while (0) -#endif -#endif - -#define UINT_CMP_GE(a, b) (UINT_MAX / 2 >= (a) - (b)) -#define UINT_CMP_LT(a, b) (UINT_MAX / 2 < (a) - (b)) #define ULONG_CMP_GE(a, b) (ULONG_MAX / 2 >= (a) - (b)) #define ULONG_CMP_LT(a, b) (ULONG_MAX / 2 < (a) - (b)) #define ulong2long(a) (*(long *)(&(a))) @@ -139,115 +50,14 @@ void do_trace_rcu_torture_read(const char *rcutorturename, /* Exported common interfaces */ #ifdef CONFIG_PREEMPT_RCU - -/** - * call_rcu() - Queue an RCU callback for invocation after a grace period. - * @head: structure to be used for queueing the RCU updates. - * @func: actual callback function to be invoked after the grace period - * - * The callback function will be invoked some time after a full grace - * period elapses, in other words after all pre-existing RCU read-side - * critical sections have completed. However, the callback function - * might well execute concurrently with RCU read-side critical sections - * that started after call_rcu() was invoked. RCU read-side critical - * sections are delimited by rcu_read_lock() and rcu_read_unlock(), - * and may be nested. - * - * Note that all CPUs must agree that the grace period extended beyond - * all pre-existing RCU read-side critical section. On systems with more - * than one CPU, this means that when "func()" is invoked, each CPU is - * guaranteed to have executed a full memory barrier since the end of its - * last RCU read-side critical section whose beginning preceded the call - * to call_rcu(). It also means that each CPU executing an RCU read-side - * critical section that continues beyond the start of "func()" must have - * executed a memory barrier after the call_rcu() but before the beginning - * of that RCU read-side critical section. Note that these guarantees - * include CPUs that are offline, idle, or executing in user mode, as - * well as CPUs that are executing in the kernel. - * - * Furthermore, if CPU A invoked call_rcu() and CPU B invoked the - * resulting RCU callback function "func()", then both CPU A and CPU B are - * guaranteed to execute a full memory barrier during the time interval - * between the call to call_rcu() and the invocation of "func()" -- even - * if CPU A and CPU B are the same CPU (but again only if the system has - * more than one CPU). - */ -void call_rcu(struct rcu_head *head, - rcu_callback_t func); - +void call_rcu(struct rcu_head *head, rcu_callback_t func); #else /* #ifdef CONFIG_PREEMPT_RCU */ - -/* In classic RCU, call_rcu() is just call_rcu_sched(). */ #define call_rcu call_rcu_sched - #endif /* #else #ifdef CONFIG_PREEMPT_RCU */ -/** - * call_rcu_bh() - Queue an RCU for invocation after a quicker grace period. - * @head: structure to be used for queueing the RCU updates. - * @func: actual callback function to be invoked after the grace period - * - * The callback function will be invoked some time after a full grace - * period elapses, in other words after all currently executing RCU - * read-side critical sections have completed. call_rcu_bh() assumes - * that the read-side critical sections end on completion of a softirq - * handler. This means that read-side critical sections in process - * context must not be interrupted by softirqs. This interface is to be - * used when most of the read-side critical sections are in softirq context. - * RCU read-side critical sections are delimited by : - * - rcu_read_lock() and rcu_read_unlock(), if in interrupt context. - * OR - * - rcu_read_lock_bh() and rcu_read_unlock_bh(), if in process context. - * These may be nested. - * - * See the description of call_rcu() for more detailed information on - * memory ordering guarantees. - */ -void call_rcu_bh(struct rcu_head *head, - rcu_callback_t func); - -/** - * call_rcu_sched() - Queue an RCU for invocation after sched grace period. - * @head: structure to be used for queueing the RCU updates. - * @func: actual callback function to be invoked after the grace period - * - * The callback function will be invoked some time after a full grace - * period elapses, in other words after all currently executing RCU - * read-side critical sections have completed. call_rcu_sched() assumes - * that the read-side critical sections end on enabling of preemption - * or on voluntary preemption. - * RCU read-side critical sections are delimited by : - * - rcu_read_lock_sched() and rcu_read_unlock_sched(), - * OR - * anything that disables preemption. - * These may be nested. - * - * See the description of call_rcu() for more detailed information on - * memory ordering guarantees. - */ -void call_rcu_sched(struct rcu_head *head, - rcu_callback_t func); - +void call_rcu_bh(struct rcu_head *head, rcu_callback_t func); +void call_rcu_sched(struct rcu_head *head, rcu_callback_t func); void synchronize_sched(void); - -/** - * call_rcu_tasks() - Queue an RCU for invocation task-based grace period - * @head: structure to be used for queueing the RCU updates. - * @func: actual callback function to be invoked after the grace period - * - * The callback function will be invoked some time after a full grace - * period elapses, in other words after all currently executing RCU - * read-side critical sections have completed. call_rcu_tasks() assumes - * that the read-side critical sections end at a voluntary context - * switch (not a preemption!), entry into idle, or transition to usermode - * execution. As such, there are no read-side primitives analogous to - * rcu_read_lock() and rcu_read_unlock() because this primitive is intended - * to determine that all tasks have passed through a safe state, not so - * much for data-strcuture synchronization. - * - * See the description of call_rcu() for more detailed information on - * memory ordering guarantees. - */ void call_rcu_tasks(struct rcu_head *head, rcu_callback_t func); void synchronize_rcu_tasks(void); void rcu_barrier_tasks(void); @@ -301,22 +111,12 @@ void rcu_check_callbacks(int user); void rcu_report_dead(unsigned int cpu); void rcu_cpu_starting(unsigned int cpu); -#ifndef CONFIG_TINY_RCU -void rcu_end_inkernel_boot(void); -#else /* #ifndef CONFIG_TINY_RCU */ -static inline void rcu_end_inkernel_boot(void) { } -#endif /* #ifndef CONFIG_TINY_RCU */ - #ifdef CONFIG_RCU_STALL_COMMON void rcu_sysrq_start(void); void rcu_sysrq_end(void); #else /* #ifdef CONFIG_RCU_STALL_COMMON */ -static inline void rcu_sysrq_start(void) -{ -} -static inline void rcu_sysrq_end(void) -{ -} +static inline void rcu_sysrq_start(void) { } +static inline void rcu_sysrq_end(void) { } #endif /* #else #ifdef CONFIG_RCU_STALL_COMMON */ #ifdef CONFIG_NO_HZ_FULL @@ -330,9 +130,7 @@ static inline void rcu_user_exit(void) { } #ifdef CONFIG_RCU_NOCB_CPU void rcu_init_nohz(void); #else /* #ifdef CONFIG_RCU_NOCB_CPU */ -static inline void rcu_init_nohz(void) -{ -} +static inline void rcu_init_nohz(void) { } #endif /* #else #ifdef CONFIG_RCU_NOCB_CPU */ /** @@ -397,10 +195,6 @@ do { \ rcu_note_voluntary_context_switch(current); \ } while (0) -#if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_RCU_TRACE) || defined(CONFIG_SMP) -bool __rcu_is_watching(void); -#endif /* #if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_RCU_TRACE) || defined(CONFIG_SMP) */ - /* * Infrastructure to implement the synchronize_() primitives in * TREE_RCU and rcu_barrier_() primitives in TINY_RCU. @@ -414,10 +208,6 @@ bool __rcu_is_watching(void); #error "Unknown RCU implementation specified to kernel configuration" #endif -#define RCU_SCHEDULER_INACTIVE 0 -#define RCU_SCHEDULER_INIT 1 -#define RCU_SCHEDULER_RUNNING 2 - /* * init_rcu_head_on_stack()/destroy_rcu_head_on_stack() are needed for dynamic * initialization and destruction of rcu_head on the stack. rcu_head structures @@ -430,30 +220,16 @@ void destroy_rcu_head(struct rcu_head *head); void init_rcu_head_on_stack(struct rcu_head *head); void destroy_rcu_head_on_stack(struct rcu_head *head); #else /* !CONFIG_DEBUG_OBJECTS_RCU_HEAD */ -static inline void init_rcu_head(struct rcu_head *head) -{ -} - -static inline void destroy_rcu_head(struct rcu_head *head) -{ -} - -static inline void init_rcu_head_on_stack(struct rcu_head *head) -{ -} - -static inline void destroy_rcu_head_on_stack(struct rcu_head *head) -{ -} +static inline void init_rcu_head(struct rcu_head *head) { } +static inline void destroy_rcu_head(struct rcu_head *head) { } +static inline void init_rcu_head_on_stack(struct rcu_head *head) { } +static inline void destroy_rcu_head_on_stack(struct rcu_head *head) { } #endif /* #else !CONFIG_DEBUG_OBJECTS_RCU_HEAD */ #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PROVE_RCU) bool rcu_lockdep_current_cpu_online(void); #else /* #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PROVE_RCU) */ -static inline bool rcu_lockdep_current_cpu_online(void) -{ - return true; -} +static inline bool rcu_lockdep_current_cpu_online(void) { return true; } #endif /* #else #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PROVE_RCU) */ #ifdef CONFIG_DEBUG_LOCK_ALLOC @@ -473,18 +249,8 @@ extern struct lockdep_map rcu_bh_lock_map; extern struct lockdep_map rcu_sched_lock_map; extern struct lockdep_map rcu_callback_map; int debug_lockdep_rcu_enabled(void); - int rcu_read_lock_held(void); int rcu_read_lock_bh_held(void); - -/** - * rcu_read_lock_sched_held() - might we be in RCU-sched read-side critical section? - * - * If CONFIG_DEBUG_LOCK_ALLOC is selected, returns nonzero iff in an - * RCU-sched read-side critical section. In absence of - * CONFIG_DEBUG_LOCK_ALLOC, this assumes we are in an RCU-sched read-side - * critical section unless it can prove otherwise. - */ int rcu_read_lock_sched_held(void); #else /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ @@ -531,9 +297,7 @@ static inline void rcu_preempt_sleep_check(void) "Illegal context switch in RCU read-side critical section"); } #else /* #ifdef CONFIG_PROVE_RCU */ -static inline void rcu_preempt_sleep_check(void) -{ -} +static inline void rcu_preempt_sleep_check(void) { } #endif /* #else #ifdef CONFIG_PROVE_RCU */ #define rcu_sleep_check() \ @@ -1084,52 +848,6 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) #define kfree_rcu(ptr, rcu_head) \ __kfree_rcu(&((ptr)->rcu_head), offsetof(typeof(*(ptr)), rcu_head)) -#ifdef CONFIG_TINY_RCU -static inline int rcu_needs_cpu(u64 basemono, u64 *nextevt) -{ - *nextevt = KTIME_MAX; - return 0; -} -#endif /* #ifdef CONFIG_TINY_RCU */ - -#if defined(CONFIG_RCU_NOCB_CPU_ALL) -static inline bool rcu_is_nocb_cpu(int cpu) { return true; } -#elif defined(CONFIG_RCU_NOCB_CPU) -bool rcu_is_nocb_cpu(int cpu); -#else -static inline bool rcu_is_nocb_cpu(int cpu) { return false; } -#endif - - -/* Only for use by adaptive-ticks code. */ -#ifdef CONFIG_NO_HZ_FULL_SYSIDLE -bool rcu_sys_is_idle(void); -void rcu_sysidle_force_exit(void); -#else /* #ifdef CONFIG_NO_HZ_FULL_SYSIDLE */ - -static inline bool rcu_sys_is_idle(void) -{ - return false; -} - -static inline void rcu_sysidle_force_exit(void) -{ -} - -#endif /* #else #ifdef CONFIG_NO_HZ_FULL_SYSIDLE */ - - -/* - * Dump the ftrace buffer, but only one time per callsite per boot. - */ -#define rcu_ftrace_dump(oops_dump_mode) \ -do { \ - static atomic_t ___rfd_beenhere = ATOMIC_INIT(0); \ - \ - if (!atomic_read(&___rfd_beenhere) && \ - !atomic_xchg(&___rfd_beenhere, 1)) \ - ftrace_dump(oops_dump_mode); \ -} while (0) /* * Place this after a lock-acquisition primitive to guarantee that diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index 74d9c3a1feee..5becbbccb998 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -25,7 +25,7 @@ #ifndef __LINUX_TINY_H #define __LINUX_TINY_H -#include <linux/cache.h> +#include <linux/ktime.h> struct rcu_dynticks; static inline int rcu_dynticks_snap(struct rcu_dynticks *rdtp) @@ -33,10 +33,8 @@ static inline int rcu_dynticks_snap(struct rcu_dynticks *rdtp) return 0; } -static inline bool rcu_eqs_special_set(int cpu) -{ - return false; /* Never flag non-existent other CPUs! */ -} +/* Never flag non-existent other CPUs! */ +static inline bool rcu_eqs_special_set(int cpu) { return false; } static inline unsigned long get_state_synchronize_rcu(void) { @@ -98,159 +96,38 @@ static inline void kfree_call_rcu(struct rcu_head *head, rcu_note_voluntary_context_switch_lite(current); \ } while (0) -/* - * Take advantage of the fact that there is only one CPU, which - * allows us to ignore virtualization-based context switches. - */ -static inline void rcu_virt_note_context_switch(int cpu) -{ -} - -/* - * Return the number of grace periods started. - */ -static inline unsigned long rcu_batches_started(void) -{ - return 0; -} - -/* - * Return the number of bottom-half grace periods started. - */ -static inline unsigned long rcu_batches_started_bh(void) -{ - return 0; -} - -/* - * Return the number of sched grace periods started. - */ -static inline unsigned long rcu_batches_started_sched(void) -{ - return 0; -} - -/* - * Return the number of grace periods completed. - */ -static inline unsigned long rcu_batches_completed(void) -{ - return 0; -} - -/* - * Return the number of bottom-half grace periods completed. - */ -static inline unsigned long rcu_batches_completed_bh(void) -{ - return 0; -} - -/* - * Return the number of sched grace periods completed. - */ -static inline unsigned long rcu_batches_completed_sched(void) +static inline int rcu_needs_cpu(u64 basemono, u64 *nextevt) { + *nextevt = KTIME_MAX; return 0; } /* - * Return the number of expedited grace periods completed. - */ -static inline unsigned long rcu_exp_batches_completed(void) -{ - return 0; -} - -/* - * Return the number of expedited sched grace periods completed. + * Take advantage of the fact that there is only one CPU, which + * allows us to ignore virtualization-based context switches. */ -static inline unsigned long rcu_exp_batches_completed_sched(void) -{ - return 0; -} - -static inline void rcu_force_quiescent_state(void) -{ -} - -static inline void rcu_bh_force_quiescent_state(void) -{ -} - -static inline void rcu_sched_force_quiescent_state(void) -{ -} - -static inline void show_rcu_gp_kthreads(void) -{ -} - -static inline void rcu_cpu_stall_reset(void) -{ -} - -static inline void rcu_idle_enter(void) -{ -} - -static inline void rcu_idle_exit(void) -{ -} - -static inline void rcu_irq_enter(void) -{ -} - -static inline void rcu_irq_exit_irqson(void) -{ -} - -static inline void rcu_irq_enter_irqson(void) -{ -} - -static inline void rcu_irq_exit(void) -{ -} - -static inline void exit_rcu(void) -{ -} +static inline void rcu_virt_note_context_switch(int cpu) { } +static inline void rcu_cpu_stall_reset(void) { } +static inline void rcu_idle_enter(void) { } +static inline void rcu_idle_exit(void) { } +static inline void rcu_irq_enter(void) { } +static inline bool rcu_irq_enter_disabled(void) { return false; } +static inline void rcu_irq_exit_irqson(void) { } +static inline void rcu_irq_enter_irqson(void) { } +static inline void rcu_irq_exit(void) { } +static inline void exit_rcu(void) { } #if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_SRCU) extern int rcu_scheduler_active __read_mostly; void rcu_scheduler_starting(void); #else /* #if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_SRCU) */ -static inline void rcu_scheduler_starting(void) -{ -} +static inline void rcu_scheduler_starting(void) { } #endif /* #else #if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_SRCU) */ +static inline void rcu_end_inkernel_boot(void) { } +static inline bool rcu_is_watching(void) { return true; } -#if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_RCU_TRACE) - -static inline bool rcu_is_watching(void) -{ - return __rcu_is_watching(); -} - -#else /* defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_RCU_TRACE) */ - -static inline bool rcu_is_watching(void) -{ - return true; -} - -#endif /* #else defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_RCU_TRACE) */ - -static inline void rcu_request_urgent_qs_task(struct task_struct *t) -{ -} - -static inline void rcu_all_qs(void) -{ - barrier(); /* Avoid RCU read-side critical sections leaking across. */ -} +/* Avoid RCU read-side critical sections leaking across. */ +static inline void rcu_all_qs(void) { barrier(); } /* RCUtree hotplug events */ #define rcutree_prepare_cpu NULL diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index 0bacb6b2af69..37d6fd3b7ff8 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -79,37 +79,20 @@ void cond_synchronize_rcu(unsigned long oldstate); unsigned long get_state_synchronize_sched(void); void cond_synchronize_sched(unsigned long oldstate); -extern unsigned long rcutorture_testseq; -extern unsigned long rcutorture_vernum; -unsigned long rcu_batches_started(void); -unsigned long rcu_batches_started_bh(void); -unsigned long rcu_batches_started_sched(void); -unsigned long rcu_batches_completed(void); -unsigned long rcu_batches_completed_bh(void); -unsigned long rcu_batches_completed_sched(void); -unsigned long rcu_exp_batches_completed(void); -unsigned long rcu_exp_batches_completed_sched(void); -void show_rcu_gp_kthreads(void); - -void rcu_force_quiescent_state(void); -void rcu_bh_force_quiescent_state(void); -void rcu_sched_force_quiescent_state(void); - void rcu_idle_enter(void); void rcu_idle_exit(void); void rcu_irq_enter(void); void rcu_irq_exit(void); void rcu_irq_enter_irqson(void); void rcu_irq_exit_irqson(void); +bool rcu_irq_enter_disabled(void); void exit_rcu(void); void rcu_scheduler_starting(void); extern int rcu_scheduler_active __read_mostly; - +void rcu_end_inkernel_boot(void); bool rcu_is_watching(void); -void rcu_request_urgent_qs_task(struct task_struct *t); - void rcu_all_qs(void); /* RCUtree hotplug events */ diff --git a/include/linux/reboot-mode.h b/include/linux/reboot-mode.h new file mode 100644 index 000000000000..75f7fe5c881f --- /dev/null +++ b/include/linux/reboot-mode.h @@ -0,0 +1,18 @@ +#ifndef __REBOOT_MODE_H__ +#define __REBOOT_MODE_H__ + +struct reboot_mode_driver { + struct device *dev; + struct list_head head; + int (*write)(struct reboot_mode_driver *reboot, unsigned int magic); + struct notifier_block reboot_notifier; +}; + +int reboot_mode_register(struct reboot_mode_driver *reboot); +int reboot_mode_unregister(struct reboot_mode_driver *reboot); +int devm_reboot_mode_register(struct device *dev, + struct reboot_mode_driver *reboot); +void devm_reboot_mode_unregister(struct device *dev, + struct reboot_mode_driver *reboot); + +#endif diff --git a/include/linux/refcount.h b/include/linux/refcount.h index b34aa649d204..591792c8e5b0 100644 --- a/include/linux/refcount.h +++ b/include/linux/refcount.h @@ -41,6 +41,7 @@ static inline unsigned int refcount_read(const refcount_t *r) return atomic_read(&r->refs); } +#ifdef CONFIG_REFCOUNT_FULL extern __must_check bool refcount_add_not_zero(unsigned int i, refcount_t *r); extern void refcount_add(unsigned int i, refcount_t *r); @@ -48,10 +49,45 @@ extern __must_check bool refcount_inc_not_zero(refcount_t *r); extern void refcount_inc(refcount_t *r); extern __must_check bool refcount_sub_and_test(unsigned int i, refcount_t *r); -extern void refcount_sub(unsigned int i, refcount_t *r); extern __must_check bool refcount_dec_and_test(refcount_t *r); extern void refcount_dec(refcount_t *r); +#else +static inline __must_check bool refcount_add_not_zero(unsigned int i, refcount_t *r) +{ + return atomic_add_unless(&r->refs, i, 0); +} + +static inline void refcount_add(unsigned int i, refcount_t *r) +{ + atomic_add(i, &r->refs); +} + +static inline __must_check bool refcount_inc_not_zero(refcount_t *r) +{ + return atomic_add_unless(&r->refs, 1, 0); +} + +static inline void refcount_inc(refcount_t *r) +{ + atomic_inc(&r->refs); +} + +static inline __must_check bool refcount_sub_and_test(unsigned int i, refcount_t *r) +{ + return atomic_sub_and_test(i, &r->refs); +} + +static inline __must_check bool refcount_dec_and_test(refcount_t *r) +{ + return atomic_dec_and_test(&r->refs); +} + +static inline void refcount_dec(refcount_t *r) +{ + atomic_dec(&r->refs); +} +#endif /* CONFIG_REFCOUNT_FULL */ extern __must_check bool refcount_dec_if_one(refcount_t *r); extern __must_check bool refcount_dec_not_one(refcount_t *r); diff --git a/include/linux/regmap.h b/include/linux/regmap.h index e88649225a60..978abfbac617 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -461,6 +461,10 @@ struct regmap *__regmap_init_spmi_ext(struct spmi_device *dev, const struct regmap_config *config, struct lock_class_key *lock_key, const char *lock_name); +struct regmap *__regmap_init_w1(struct device *w1_dev, + const struct regmap_config *config, + struct lock_class_key *lock_key, + const char *lock_name); struct regmap *__regmap_init_mmio_clk(struct device *dev, const char *clk_id, void __iomem *regs, const struct regmap_config *config, @@ -493,6 +497,10 @@ struct regmap *__devm_regmap_init_spmi_ext(struct spmi_device *dev, const struct regmap_config *config, struct lock_class_key *lock_key, const char *lock_name); +struct regmap *__devm_regmap_init_w1(struct device *w1_dev, + const struct regmap_config *config, + struct lock_class_key *lock_key, + const char *lock_name); struct regmap *__devm_regmap_init_mmio_clk(struct device *dev, const char *clk_id, void __iomem *regs, @@ -597,6 +605,19 @@ int regmap_attach_dev(struct device *dev, struct regmap *map, dev, config) /** + * regmap_init_w1() - Initialise register map + * + * @w1_dev: Device that will be interacted with + * @config: Configuration for register map + * + * The return value will be an ERR_PTR() on error or a valid pointer to + * a struct regmap. + */ +#define regmap_init_w1(w1_dev, config) \ + __regmap_lockdep_wrapper(__regmap_init_w1, #config, \ + w1_dev, config) + +/** * regmap_init_mmio_clk() - Initialise register map with register clock * * @dev: Device that will be interacted with @@ -712,6 +733,19 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg); dev, config) /** + * devm_regmap_init_w1() - Initialise managed register map + * + * @w1_dev: Device that will be interacted with + * @config: Configuration for register map + * + * The return value will be an ERR_PTR() on error or a valid pointer + * to a struct regmap. The regmap will be automatically freed by the + * device management code. + */ +#define devm_regmap_init_w1(w1_dev, config) \ + __regmap_lockdep_wrapper(__devm_regmap_init_w1, #config, \ + w1_dev, config) +/** * devm_regmap_init_mmio_clk() - Initialise managed register map with clock * * @dev: Device that will be interacted with @@ -884,6 +918,7 @@ struct regmap_irq { * * @status_base: Base status register address. * @mask_base: Base mask register address. + * @mask_writeonly: Base mask register is write only. * @unmask_base: Base unmask register address. for chips who have * separate mask and unmask registers * @ack_base: Base ack address. If zero then the chip is clear on read. @@ -927,6 +962,7 @@ struct regmap_irq_chip { unsigned int wake_base; unsigned int type_base; unsigned int irq_reg_stride; + bool mask_writeonly:1; bool init_ack_masked:1; bool mask_invert:1; bool use_ack:1; diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index 117699d1f7df..9cd4fef37203 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -110,6 +110,10 @@ struct regulator_state { * @ramp_delay: Time to settle down after voltage change (unit: uV/us) * @settling_time: Time to settle down after voltage change when voltage * change is non-linear (unit: microseconds). + * @settling_time_up: Time to settle down after voltage increase when voltage + * change is non-linear (unit: microseconds). + * @settling_time_down : Time to settle down after voltage decrease when + * voltage change is non-linear (unit: microseconds). * @active_discharge: Enable/disable active discharge. The enum * regulator_active_discharge values are used for * initialisation. @@ -152,6 +156,8 @@ struct regulation_constraints { unsigned int ramp_delay; unsigned int settling_time; + unsigned int settling_time_up; + unsigned int settling_time_down; unsigned int enable_time; unsigned int active_discharge; diff --git a/include/linux/restart_block.h b/include/linux/restart_block.h index 0d905d8ec553..19df8422606c 100644 --- a/include/linux/restart_block.h +++ b/include/linux/restart_block.h @@ -11,6 +11,14 @@ struct timespec; struct compat_timespec; struct pollfd; +enum timespec_type { + TT_NONE = 0, + TT_NATIVE = 1, +#ifdef CONFIG_COMPAT + TT_COMPAT = 2, +#endif +}; + /* * System call restart block. */ @@ -29,10 +37,13 @@ struct restart_block { /* For nanosleep */ struct { clockid_t clockid; - struct timespec __user *rmtp; + enum timespec_type type; + union { + struct timespec __user *rmtp; #ifdef CONFIG_COMPAT - struct compat_timespec __user *compat_rmtp; + struct compat_timespec __user *compat_rmtp; #endif + }; u64 expires; } nanosleep; /* For poll */ diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h index 1abba5ce2a2f..44fd002f7cd5 100644 --- a/include/linux/rtmutex.h +++ b/include/linux/rtmutex.h @@ -37,6 +37,9 @@ struct rt_mutex { int line; void *magic; #endif +#ifdef CONFIG_DEBUG_LOCK_ALLOC + struct lockdep_map dep_map; +#endif }; struct rt_mutex_waiter; @@ -58,19 +61,33 @@ struct hrtimer_sleeper; #ifdef CONFIG_DEBUG_RT_MUTEXES # define __DEBUG_RT_MUTEX_INITIALIZER(mutexname) \ , .name = #mutexname, .file = __FILE__, .line = __LINE__ -# define rt_mutex_init(mutex) __rt_mutex_init(mutex, __func__) + +# define rt_mutex_init(mutex) \ +do { \ + static struct lock_class_key __key; \ + __rt_mutex_init(mutex, __func__, &__key); \ +} while (0) + extern void rt_mutex_debug_task_free(struct task_struct *tsk); #else # define __DEBUG_RT_MUTEX_INITIALIZER(mutexname) -# define rt_mutex_init(mutex) __rt_mutex_init(mutex, NULL) +# define rt_mutex_init(mutex) __rt_mutex_init(mutex, NULL, NULL) # define rt_mutex_debug_task_free(t) do { } while (0) #endif +#ifdef CONFIG_DEBUG_LOCK_ALLOC +#define __DEP_MAP_RT_MUTEX_INITIALIZER(mutexname) \ + , .dep_map = { .name = #mutexname } +#else +#define __DEP_MAP_RT_MUTEX_INITIALIZER(mutexname) +#endif + #define __RT_MUTEX_INITIALIZER(mutexname) \ { .wait_lock = __RAW_SPIN_LOCK_UNLOCKED(mutexname.wait_lock) \ , .waiters = RB_ROOT \ , .owner = NULL \ - __DEBUG_RT_MUTEX_INITIALIZER(mutexname)} + __DEBUG_RT_MUTEX_INITIALIZER(mutexname) \ + __DEP_MAP_RT_MUTEX_INITIALIZER(mutexname)} #define DEFINE_RT_MUTEX(mutexname) \ struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname) @@ -86,7 +103,7 @@ static inline int rt_mutex_is_locked(struct rt_mutex *lock) return lock->owner != NULL; } -extern void __rt_mutex_init(struct rt_mutex *lock, const char *name); +extern void __rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock_class_key *key); extern void rt_mutex_destroy(struct rt_mutex *lock); extern void rt_mutex_lock(struct rt_mutex *lock); diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index cb3c8fe6acd7..4b3286ac60c8 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -278,6 +278,8 @@ size_t sg_pcopy_from_buffer(struct scatterlist *sgl, unsigned int nents, const void *buf, size_t buflen, off_t skip); size_t sg_pcopy_to_buffer(struct scatterlist *sgl, unsigned int nents, void *buf, size_t buflen, off_t skip); +size_t sg_zero_buffer(struct scatterlist *sgl, unsigned int nents, + size_t buflen, off_t skip); /* * Maximum number of entries that will be allocated in one piece, if diff --git a/include/linux/sched.h b/include/linux/sched.h index 2b69fc650201..9c4ca7433d9d 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -421,7 +421,8 @@ struct sched_dl_entity { u64 dl_runtime; /* Maximum runtime for each instance */ u64 dl_deadline; /* Relative deadline of each instance */ u64 dl_period; /* Separation of two instances (period) */ - u64 dl_bw; /* dl_runtime / dl_deadline */ + u64 dl_bw; /* dl_runtime / dl_period */ + u64 dl_density; /* dl_runtime / dl_deadline */ /* * Actual scheduling parameters. Initialized with the values above, @@ -445,16 +446,33 @@ struct sched_dl_entity { * * @dl_yielded tells if task gave up the CPU before consuming * all its available runtime during the last job. + * + * @dl_non_contending tells if the task is inactive while still + * contributing to the active utilization. In other words, it + * indicates if the inactive timer has been armed and its handler + * has not been executed yet. This flag is useful to avoid race + * conditions between the inactive timer handler and the wakeup + * code. */ int dl_throttled; int dl_boosted; int dl_yielded; + int dl_non_contending; /* * Bandwidth enforcement timer. Each -deadline task has its * own bandwidth to be enforced, thus we need one timer per task. */ struct hrtimer dl_timer; + + /* + * Inactive timer, responsible for decreasing the active utilization + * at the "0-lag time". When a -deadline task blocks, it contributes + * to GRUB's active utilization until the "0-lag time", hence a + * timer is needed to decrease the active utilization at the correct + * time. + */ + struct hrtimer inactive_timer; }; union rcu_special { @@ -1096,8 +1114,6 @@ static inline struct pid *task_session(struct task_struct *task) * current. * task_xid_nr_ns() : id seen from the ns specified; * - * set_task_vxid() : assigns a virtual id to a task; - * * see also pid_nr() etc in include/linux/pid.h */ pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type, struct pid_namespace *ns); @@ -1265,6 +1281,16 @@ extern struct pid *cad_pid; #define tsk_used_math(p) ((p)->flags & PF_USED_MATH) #define used_math() tsk_used_math(current) +static inline bool is_percpu_thread(void) +{ +#ifdef CONFIG_SMP + return (current->flags & PF_NO_SETAFFINITY) && + (current->nr_cpus_allowed == 1); +#else + return true; +#endif +} + /* Per-process atomic flags. */ #define PFA_NO_NEW_PRIVS 0 /* May not gain new privileges. */ #define PFA_SPREAD_PAGE 1 /* Spread page cache over cpuset */ diff --git a/include/linux/sched/clock.h b/include/linux/sched/clock.h index 34fe92ce1ebd..a55600ffdf4b 100644 --- a/include/linux/sched/clock.h +++ b/include/linux/sched/clock.h @@ -23,10 +23,6 @@ extern u64 sched_clock_cpu(int cpu); extern void sched_clock_init(void); #ifndef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK -static inline void sched_clock_init_late(void) -{ -} - static inline void sched_clock_tick(void) { } @@ -39,7 +35,7 @@ static inline void sched_clock_idle_sleep_event(void) { } -static inline void sched_clock_idle_wakeup_event(u64 delta_ns) +static inline void sched_clock_idle_wakeup_event(void) { } @@ -53,7 +49,6 @@ static inline u64 local_clock(void) return sched_clock(); } #else -extern void sched_clock_init_late(void); extern int sched_clock_stable(void); extern void clear_sched_clock_stable(void); @@ -63,10 +58,10 @@ extern void clear_sched_clock_stable(void); */ extern u64 __sched_clock_offset; - extern void sched_clock_tick(void); +extern void sched_clock_tick_stable(void); extern void sched_clock_idle_sleep_event(void); -extern void sched_clock_idle_wakeup_event(u64 delta_ns); +extern void sched_clock_idle_wakeup_event(void); /* * As outlined in clock.c, provides a fast, high resolution, nanosecond diff --git a/include/linux/sched/nohz.h b/include/linux/sched/nohz.h index 4995b717500b..7d3f75db23e5 100644 --- a/include/linux/sched/nohz.h +++ b/include/linux/sched/nohz.h @@ -23,11 +23,11 @@ static inline void set_cpu_sd_state_idle(void) { } #endif #ifdef CONFIG_NO_HZ_COMMON -void calc_load_enter_idle(void); -void calc_load_exit_idle(void); +void calc_load_nohz_start(void); +void calc_load_nohz_stop(void); #else -static inline void calc_load_enter_idle(void) { } -static inline void calc_load_exit_idle(void) { } +static inline void calc_load_nohz_start(void) { } +static inline void calc_load_nohz_stop(void) { } #endif /* CONFIG_NO_HZ_COMMON */ #if defined(CONFIG_NO_HZ_COMMON) && defined(CONFIG_SMP) diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index a978d7189cfd..f0f065c5afcf 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -95,8 +95,6 @@ static inline void put_task_struct(struct task_struct *t) } struct task_struct *task_rcu_dereference(struct task_struct **ptask); -struct task_struct *try_get_task_struct(struct task_struct **ptask); - #ifdef CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT extern int arch_task_struct_size __read_mostly; diff --git a/include/linux/scpi_protocol.h b/include/linux/scpi_protocol.h index dc5f989be226..327d65663dbf 100644 --- a/include/linux/scpi_protocol.h +++ b/include/linux/scpi_protocol.h @@ -67,6 +67,9 @@ struct scpi_ops { int (*dvfs_get_idx)(u8); int (*dvfs_set_idx)(u8, u8); struct scpi_dvfs_info *(*dvfs_get_info)(u8); + int (*device_domain_id)(struct device *); + int (*get_transition_latency)(struct device *); + int (*add_opps_to_device)(struct device *); int (*sensor_get_capability)(u16 *sensors); int (*sensor_get_info)(u16 sensor_id, struct scpi_sensor_info *); int (*sensor_get_value)(u16, u64 *); diff --git a/include/linux/security.h b/include/linux/security.h index af675b576645..b6ea1dc9cc9d 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -6,6 +6,7 @@ * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> * Copyright (C) 2001 James Morris <jmorris@intercode.com.au> * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group) + * Copyright (C) 2016 Mellanox Techonologies * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -68,6 +69,10 @@ struct audit_krule; struct user_namespace; struct timezone; +enum lsm_event { + LSM_POLICY_CHANGE, +}; + /* These functions are in security/commoncap.c */ extern int cap_capable(const struct cred *cred, struct user_namespace *ns, int cap, int audit); @@ -163,6 +168,10 @@ struct security_mnt_opts { int num_mnt_opts; }; +int call_lsm_notifier(enum lsm_event event, void *data); +int register_lsm_notifier(struct notifier_block *nb); +int unregister_lsm_notifier(struct notifier_block *nb); + static inline void security_init_mnt_opts(struct security_mnt_opts *opts) { opts->mnt_opts = NULL; @@ -240,7 +249,9 @@ int security_sb_set_mnt_opts(struct super_block *sb, unsigned long kern_flags, unsigned long *set_kern_flags); int security_sb_clone_mnt_opts(const struct super_block *oldsb, - struct super_block *newsb); + struct super_block *newsb, + unsigned long kern_flags, + unsigned long *set_kern_flags); int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts); int security_dentry_init_security(struct dentry *dentry, int mode, const struct qstr *name, void **ctx, @@ -381,6 +392,21 @@ int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); struct security_mnt_opts { }; +static inline int call_lsm_notifier(enum lsm_event event, void *data) +{ + return 0; +} + +static inline int register_lsm_notifier(struct notifier_block *nb) +{ + return 0; +} + +static inline int unregister_lsm_notifier(struct notifier_block *nb) +{ + return 0; +} + static inline void security_init_mnt_opts(struct security_mnt_opts *opts) { } @@ -581,7 +607,9 @@ static inline int security_sb_set_mnt_opts(struct super_block *sb, } static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb, - struct super_block *newsb) + struct super_block *newsb, + unsigned long kern_flags, + unsigned long *set_kern_flags) { return 0; } @@ -1406,6 +1434,32 @@ static inline int security_tun_dev_open(void *security) } #endif /* CONFIG_SECURITY_NETWORK */ +#ifdef CONFIG_SECURITY_INFINIBAND +int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey); +int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num); +int security_ib_alloc_security(void **sec); +void security_ib_free_security(void *sec); +#else /* CONFIG_SECURITY_INFINIBAND */ +static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) +{ + return 0; +} + +static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) +{ + return 0; +} + +static inline int security_ib_alloc_security(void **sec) +{ + return 0; +} + +static inline void security_ib_free_security(void *sec) +{ +} +#endif /* CONFIG_SECURITY_INFINIBAND */ + #ifdef CONFIG_SECURITY_NETWORK_XFRM int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, @@ -1651,6 +1705,10 @@ extern struct dentry *securityfs_create_file(const char *name, umode_t mode, struct dentry *parent, void *data, const struct file_operations *fops); extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent); +struct dentry *securityfs_create_symlink(const char *name, + struct dentry *parent, + const char *target, + const struct inode_operations *iops); extern void securityfs_remove(struct dentry *dentry); #else /* CONFIG_SECURITYFS */ @@ -1670,6 +1728,14 @@ static inline struct dentry *securityfs_create_file(const char *name, return ERR_PTR(-ENODEV); } +static inline struct dentry *securityfs_create_symlink(const char *name, + struct dentry *parent, + const char *target, + const struct inode_operations *iops) +{ + return ERR_PTR(-ENODEV); +} + static inline void securityfs_remove(struct dentry *dentry) {} diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 64d892f1e5cd..1775500294bb 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -195,6 +195,7 @@ struct uart_port { #define UPF_NO_TXEN_TEST ((__force upf_t) (1 << 15)) #define UPF_MAGIC_MULTIPLIER ((__force upf_t) ASYNC_MAGIC_MULTIPLIER /* 16 */ ) +#define UPF_NO_THRE_TEST ((__force upf_t) (1 << 19)) /* Port has hardware-assisted h/w flow control */ #define UPF_AUTO_CTS ((__force upf_t) (1 << 20)) #define UPF_AUTO_RTS ((__force upf_t) (1 << 21)) diff --git a/include/linux/signal.h b/include/linux/signal.h index 1f5a16620693..a39feddd71ba 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -3,16 +3,13 @@ #include <linux/bug.h> #include <linux/signal_types.h> +#include <linux/string.h> struct task_struct; /* for sysctl */ extern int print_fatal_signals; -#ifndef HAVE_ARCH_COPY_SIGINFO - -#include <linux/string.h> - static inline void copy_siginfo(struct siginfo *to, struct siginfo *from) { if (from->si_code < 0) @@ -22,7 +19,7 @@ static inline void copy_siginfo(struct siginfo *to, struct siginfo *from) memcpy(to, from, __ARCH_SI_PREAMBLE_SIZE + sizeof(from->_sifields._sigchld)); } -#endif +int copy_siginfo_to_user(struct siginfo __user *to, const struct siginfo *from); /* * Define some primitives to manipulate sigset_t. diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index a098d95b3d84..25b1659c832a 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2691,7 +2691,7 @@ bool skb_page_frag_refill(unsigned int sz, struct page_frag *pfrag, gfp_t prio); * @offset: the offset within the fragment (starting at the * fragment's own offset) * @size: the number of bytes to map - * @dir: the direction of the mapping (%PCI_DMA_*) + * @dir: the direction of the mapping (``PCI_DMA_*``) * * Maps the page associated with @frag to @device. */ diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 07ef550c6627..93315d6b21a8 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -84,6 +84,7 @@ struct kmem_cache { int red_left_pad; /* Left redzone padding size */ #ifdef CONFIG_SYSFS struct kobject kobj; /* For sysfs */ + struct work_struct kobj_remove_work; #endif #ifdef CONFIG_MEMCG struct memcg_cache_params memcg_params; diff --git a/include/linux/soc/actions/owl-sps.h b/include/linux/soc/actions/owl-sps.h new file mode 100644 index 000000000000..33d0dbeceb55 --- /dev/null +++ b/include/linux/soc/actions/owl-sps.h @@ -0,0 +1,11 @@ +/* + * Copyright (c) 2017 Andreas Färber + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef SOC_ACTIONS_OWL_SPS_H +#define SOC_ACTIONS_OWL_SPS_H + +int owl_sps_set_pg(void __iomem *base, u32 pwr_mask, u32 ack_mask, bool enable); + +#endif diff --git a/include/linux/soc/renesas/rcar-rst.h b/include/linux/soc/renesas/rcar-rst.h index 787e7ad53d45..2c231f2280a6 100644 --- a/include/linux/soc/renesas/rcar-rst.h +++ b/include/linux/soc/renesas/rcar-rst.h @@ -1,8 +1,7 @@ #ifndef __LINUX_SOC_RENESAS_RCAR_RST_H__ #define __LINUX_SOC_RENESAS_RCAR_RST_H__ -#if defined(CONFIG_ARCH_RCAR_GEN1) || defined(CONFIG_ARCH_RCAR_GEN2) || \ - defined(CONFIG_ARCH_R8A7795) || defined(CONFIG_ARCH_R8A7796) +#ifdef CONFIG_RST_RCAR int rcar_rst_read_mode_pins(u32 *mode); #else static inline int rcar_rst_read_mode_pins(u32 *mode) { return -ENODEV; } diff --git a/include/linux/spi/sh_msiof.h b/include/linux/spi/sh_msiof.h index b087a85f5f72..f74b581f242f 100644 --- a/include/linux/spi/sh_msiof.h +++ b/include/linux/spi/sh_msiof.h @@ -1,10 +1,16 @@ #ifndef __SPI_SH_MSIOF_H__ #define __SPI_SH_MSIOF_H__ +enum { + MSIOF_SPI_MASTER, + MSIOF_SPI_SLAVE, +}; + struct sh_msiof_spi_info { int tx_fifo_override; int rx_fifo_override; u16 num_chipselect; + int mode; unsigned int dma_tx_id; unsigned int dma_rx_id; u32 dtdl; diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 935bd2854ff1..7b2170bfd6e7 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -24,13 +24,13 @@ struct dma_chan; struct property_entry; -struct spi_master; +struct spi_controller; struct spi_transfer; struct spi_flash_read_message; /* - * INTERFACES between SPI master-side drivers and SPI infrastructure. - * (There's no SPI slave support for Linux yet...) + * INTERFACES between SPI master-side drivers and SPI slave protocol handlers, + * and SPI infrastructure. */ extern struct bus_type spi_bus_type; @@ -84,7 +84,7 @@ struct spi_statistics { void spi_statistics_add_transfer_stats(struct spi_statistics *stats, struct spi_transfer *xfer, - struct spi_master *master); + struct spi_controller *ctlr); #define SPI_STATISTICS_ADD_TO_FIELD(stats, field, count) \ do { \ @@ -98,13 +98,14 @@ void spi_statistics_add_transfer_stats(struct spi_statistics *stats, SPI_STATISTICS_ADD_TO_FIELD(stats, field, 1) /** - * struct spi_device - Master side proxy for an SPI slave device + * struct spi_device - Controller side proxy for an SPI slave device * @dev: Driver model representation of the device. - * @master: SPI controller used with the device. + * @controller: SPI controller used with the device. + * @master: Copy of controller, for backwards compatibility. * @max_speed_hz: Maximum clock rate to be used with this chip * (on this board); may be changed by the device's driver. * The spi_transfer.speed_hz can override this for each transfer. - * @chip_select: Chipselect, distinguishing chips handled by @master. + * @chip_select: Chipselect, distinguishing chips handled by @controller. * @mode: The spi mode defines how data is clocked out and in. * This may be changed by the device's driver. * The "active low" default for chipselect mode can be overridden @@ -140,7 +141,8 @@ void spi_statistics_add_transfer_stats(struct spi_statistics *stats, */ struct spi_device { struct device dev; - struct spi_master *master; + struct spi_controller *controller; + struct spi_controller *master; /* compatibility layer */ u32 max_speed_hz; u8 chip_select; u8 bits_per_word; @@ -198,7 +200,7 @@ static inline void spi_dev_put(struct spi_device *spi) put_device(&spi->dev); } -/* ctldata is for the bus_master driver's runtime state */ +/* ctldata is for the bus_controller driver's runtime state */ static inline void *spi_get_ctldata(struct spi_device *spi) { return spi->controller_state; @@ -292,9 +294,9 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) spi_unregister_driver) /** - * struct spi_master - interface to SPI master controller + * struct spi_controller - interface to SPI master or slave controller * @dev: device interface to this driver - * @list: link with the global spi_master list + * @list: link with the global spi_controller list * @bus_num: board-specific (and often SOC-specific) identifier for a * given SPI controller. * @num_chipselect: chipselects are used to distinguish individual @@ -311,6 +313,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @min_speed_hz: Lowest supported transfer speed * @max_speed_hz: Highest supported transfer speed * @flags: other constraints relevant to this driver + * @slave: indicates that this is an SPI slave controller * @max_transfer_size: function that returns the max transfer size for * a &spi_device; may be %NULL, so the default %SIZE_MAX will be used. * @max_message_size: function that returns the max message size for @@ -326,8 +329,8 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * the device whose settings are being modified. * @transfer: adds a message to the controller's transfer queue. * @cleanup: frees controller-specific state - * @can_dma: determine whether this master supports DMA - * @queued: whether this master is providing an internal message queue + * @can_dma: determine whether this controller supports DMA + * @queued: whether this controller is providing an internal message queue * @kworker: thread struct for message pump * @kworker_task: pointer to task for message pump kworker thread * @pump_messages: work struct for scheduling work to the message pump @@ -374,6 +377,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @handle_err: the subsystem calls the driver to handle an error that occurs * in the generic implementation of transfer_one_message(). * @unprepare_message: undo any work done by prepare_message(). + * @slave_abort: abort the ongoing transfer request on an SPI slave controller * @spi_flash_read: to support spi-controller hardwares that provide * accelerated interface to read from flash devices. * @spi_flash_can_dma: analogous to can_dma() interface, but for @@ -382,7 +386,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @cs_gpios: Array of GPIOs to use as chip select lines; one per CS * number. Any individual value may be -ENOENT for CS lines that * are not GPIOs (driven by the SPI controller itself). - * @statistics: statistics for the spi_master + * @statistics: statistics for the spi_controller * @dma_tx: DMA transmit channel * @dma_rx: DMA receive channel * @dummy_rx: dummy receive buffer for full-duplex devices @@ -391,7 +395,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * what Linux expects, this optional hook can be used to translate * between the two. * - * Each SPI master controller can communicate with one or more @spi_device + * Each SPI controller can communicate with one or more @spi_device * children. These make a small bus, sharing MOSI, MISO and SCK signals * but not chip select signals. Each device may be configured to use a * different clock rate, since those shared signals are ignored unless @@ -402,7 +406,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * an SPI slave device. For each such message it queues, it calls the * message's completion function when the transaction completes. */ -struct spi_master { +struct spi_controller { struct device dev; struct list_head list; @@ -440,12 +444,16 @@ struct spi_master { /* other constraints relevant to this driver */ u16 flags; -#define SPI_MASTER_HALF_DUPLEX BIT(0) /* can't do full duplex */ -#define SPI_MASTER_NO_RX BIT(1) /* can't do buffer read */ -#define SPI_MASTER_NO_TX BIT(2) /* can't do buffer write */ -#define SPI_MASTER_MUST_RX BIT(3) /* requires rx */ -#define SPI_MASTER_MUST_TX BIT(4) /* requires tx */ -#define SPI_MASTER_GPIO_SS BIT(5) /* GPIO CS must select slave */ +#define SPI_CONTROLLER_HALF_DUPLEX BIT(0) /* can't do full duplex */ +#define SPI_CONTROLLER_NO_RX BIT(1) /* can't do buffer read */ +#define SPI_CONTROLLER_NO_TX BIT(2) /* can't do buffer write */ +#define SPI_CONTROLLER_MUST_RX BIT(3) /* requires rx */ +#define SPI_CONTROLLER_MUST_TX BIT(4) /* requires tx */ + +#define SPI_MASTER_GPIO_SS BIT(5) /* GPIO CS must select slave */ + + /* flag indicating this is an SPI slave controller */ + bool slave; /* * on some hardware transfer / message size may be constrained @@ -480,8 +488,8 @@ struct spi_master { * any other request management * + To a given spi_device, message queueing is pure fifo * - * + The master's main job is to process its message queue, - * selecting a chip then transferring data + * + The controller's main job is to process its message queue, + * selecting a chip (for masters), then transferring data * + If there are multiple spi_device children, the i/o queue * arbitration algorithm is unspecified (round robin, fifo, * priority, reservations, preemption, etc) @@ -494,7 +502,7 @@ struct spi_master { int (*transfer)(struct spi_device *spi, struct spi_message *mesg); - /* called on release() to free memory provided by spi_master */ + /* called on release() to free memory provided by spi_controller */ void (*cleanup)(struct spi_device *spi); /* @@ -504,13 +512,13 @@ struct spi_master { * not modify or store xfer and dma_tx and dma_rx must be set * while the device is prepared. */ - bool (*can_dma)(struct spi_master *master, + bool (*can_dma)(struct spi_controller *ctlr, struct spi_device *spi, struct spi_transfer *xfer); /* * These hooks are for drivers that want to use the generic - * master transfer queueing mechanism. If these are used, the + * controller transfer queueing mechanism. If these are used, the * transfer() function above must NOT be specified by the driver. * Over time we expect SPI drivers to be phased over to this API. */ @@ -531,14 +539,15 @@ struct spi_master { struct completion xfer_completion; size_t max_dma_len; - int (*prepare_transfer_hardware)(struct spi_master *master); - int (*transfer_one_message)(struct spi_master *master, + int (*prepare_transfer_hardware)(struct spi_controller *ctlr); + int (*transfer_one_message)(struct spi_controller *ctlr, struct spi_message *mesg); - int (*unprepare_transfer_hardware)(struct spi_master *master); - int (*prepare_message)(struct spi_master *master, + int (*unprepare_transfer_hardware)(struct spi_controller *ctlr); + int (*prepare_message)(struct spi_controller *ctlr, struct spi_message *message); - int (*unprepare_message)(struct spi_master *master, + int (*unprepare_message)(struct spi_controller *ctlr, struct spi_message *message); + int (*slave_abort)(struct spi_controller *ctlr); int (*spi_flash_read)(struct spi_device *spi, struct spi_flash_read_message *msg); bool (*spi_flash_can_dma)(struct spi_device *spi, @@ -550,9 +559,9 @@ struct spi_master { * of transfer_one_message() provied by the core. */ void (*set_cs)(struct spi_device *spi, bool enable); - int (*transfer_one)(struct spi_master *master, struct spi_device *spi, + int (*transfer_one)(struct spi_controller *ctlr, struct spi_device *spi, struct spi_transfer *transfer); - void (*handle_err)(struct spi_master *master, + void (*handle_err)(struct spi_controller *ctlr, struct spi_message *message); /* gpio chip select */ @@ -569,57 +578,78 @@ struct spi_master { void *dummy_rx; void *dummy_tx; - int (*fw_translate_cs)(struct spi_master *master, unsigned cs); + int (*fw_translate_cs)(struct spi_controller *ctlr, unsigned cs); }; -static inline void *spi_master_get_devdata(struct spi_master *master) +static inline void *spi_controller_get_devdata(struct spi_controller *ctlr) { - return dev_get_drvdata(&master->dev); + return dev_get_drvdata(&ctlr->dev); } -static inline void spi_master_set_devdata(struct spi_master *master, void *data) +static inline void spi_controller_set_devdata(struct spi_controller *ctlr, + void *data) { - dev_set_drvdata(&master->dev, data); + dev_set_drvdata(&ctlr->dev, data); } -static inline struct spi_master *spi_master_get(struct spi_master *master) +static inline struct spi_controller *spi_controller_get(struct spi_controller *ctlr) { - if (!master || !get_device(&master->dev)) + if (!ctlr || !get_device(&ctlr->dev)) return NULL; - return master; + return ctlr; +} + +static inline void spi_controller_put(struct spi_controller *ctlr) +{ + if (ctlr) + put_device(&ctlr->dev); } -static inline void spi_master_put(struct spi_master *master) +static inline bool spi_controller_is_slave(struct spi_controller *ctlr) { - if (master) - put_device(&master->dev); + return IS_ENABLED(CONFIG_SPI_SLAVE) && ctlr->slave; } /* PM calls that need to be issued by the driver */ -extern int spi_master_suspend(struct spi_master *master); -extern int spi_master_resume(struct spi_master *master); +extern int spi_controller_suspend(struct spi_controller *ctlr); +extern int spi_controller_resume(struct spi_controller *ctlr); /* Calls the driver make to interact with the message queue */ -extern struct spi_message *spi_get_next_queued_message(struct spi_master *master); -extern void spi_finalize_current_message(struct spi_master *master); -extern void spi_finalize_current_transfer(struct spi_master *master); +extern struct spi_message *spi_get_next_queued_message(struct spi_controller *ctlr); +extern void spi_finalize_current_message(struct spi_controller *ctlr); +extern void spi_finalize_current_transfer(struct spi_controller *ctlr); -/* the spi driver core manages memory for the spi_master classdev */ -extern struct spi_master * -spi_alloc_master(struct device *host, unsigned size); +/* the spi driver core manages memory for the spi_controller classdev */ +extern struct spi_controller *__spi_alloc_controller(struct device *host, + unsigned int size, bool slave); -extern int spi_register_master(struct spi_master *master); -extern int devm_spi_register_master(struct device *dev, - struct spi_master *master); -extern void spi_unregister_master(struct spi_master *master); +static inline struct spi_controller *spi_alloc_master(struct device *host, + unsigned int size) +{ + return __spi_alloc_controller(host, size, false); +} -extern struct spi_master *spi_busnum_to_master(u16 busnum); +static inline struct spi_controller *spi_alloc_slave(struct device *host, + unsigned int size) +{ + if (!IS_ENABLED(CONFIG_SPI_SLAVE)) + return NULL; + + return __spi_alloc_controller(host, size, true); +} + +extern int spi_register_controller(struct spi_controller *ctlr); +extern int devm_spi_register_controller(struct device *dev, + struct spi_controller *ctlr); +extern void spi_unregister_controller(struct spi_controller *ctlr); + +extern struct spi_controller *spi_busnum_to_master(u16 busnum); /* * SPI resource management while processing a SPI message */ -typedef void (*spi_res_release_t)(struct spi_master *master, +typedef void (*spi_res_release_t)(struct spi_controller *ctlr, struct spi_message *msg, void *res); @@ -644,7 +674,7 @@ extern void *spi_res_alloc(struct spi_device *spi, extern void spi_res_add(struct spi_message *message, void *res); extern void spi_res_free(void *res); -extern void spi_res_release(struct spi_master *master, +extern void spi_res_release(struct spi_controller *ctlr, struct spi_message *message); /*---------------------------------------------------------------------------*/ @@ -828,7 +858,7 @@ struct spi_message { /* for optional use by whatever driver currently owns the * spi_message ... between calls to spi_async and then later - * complete(), that's the spi_master controller driver. + * complete(), that's the spi_controller controller driver. */ struct list_head queue; void *state; @@ -912,25 +942,27 @@ extern int spi_setup(struct spi_device *spi); extern int spi_async(struct spi_device *spi, struct spi_message *message); extern int spi_async_locked(struct spi_device *spi, struct spi_message *message); +extern int spi_slave_abort(struct spi_device *spi); static inline size_t spi_max_message_size(struct spi_device *spi) { - struct spi_master *master = spi->master; - if (!master->max_message_size) + struct spi_controller *ctlr = spi->controller; + + if (!ctlr->max_message_size) return SIZE_MAX; - return master->max_message_size(spi); + return ctlr->max_message_size(spi); } static inline size_t spi_max_transfer_size(struct spi_device *spi) { - struct spi_master *master = spi->master; + struct spi_controller *ctlr = spi->controller; size_t tr_max = SIZE_MAX; size_t msg_max = spi_max_message_size(spi); - if (master->max_transfer_size) - tr_max = master->max_transfer_size(spi); + if (ctlr->max_transfer_size) + tr_max = ctlr->max_transfer_size(spi); /* transfer size limit must not be greater than messsage size limit */ return min(tr_max, msg_max); @@ -941,7 +973,7 @@ spi_max_transfer_size(struct spi_device *spi) /* SPI transfer replacement methods which make use of spi_res */ struct spi_replaced_transfers; -typedef void (*spi_replaced_release_t)(struct spi_master *master, +typedef void (*spi_replaced_release_t)(struct spi_controller *ctlr, struct spi_message *msg, struct spi_replaced_transfers *res); /** @@ -985,7 +1017,7 @@ extern struct spi_replaced_transfers *spi_replace_transfers( /* SPI transfer transformation methods */ -extern int spi_split_transfers_maxsize(struct spi_master *master, +extern int spi_split_transfers_maxsize(struct spi_controller *ctlr, struct spi_message *msg, size_t maxsize, gfp_t gfp); @@ -999,8 +1031,8 @@ extern int spi_split_transfers_maxsize(struct spi_master *master, extern int spi_sync(struct spi_device *spi, struct spi_message *message); extern int spi_sync_locked(struct spi_device *spi, struct spi_message *message); -extern int spi_bus_lock(struct spi_master *master); -extern int spi_bus_unlock(struct spi_master *master); +extern int spi_bus_lock(struct spi_controller *ctlr); +extern int spi_bus_unlock(struct spi_controller *ctlr); /** * spi_sync_transfer - synchronous SPI data transfer @@ -1185,9 +1217,9 @@ struct spi_flash_read_message { /* SPI core interface for flash read support */ static inline bool spi_flash_read_supported(struct spi_device *spi) { - return spi->master->spi_flash_read && - (!spi->master->flash_read_supported || - spi->master->flash_read_supported(spi)); + return spi->controller->spi_flash_read && + (!spi->controller->flash_read_supported || + spi->controller->flash_read_supported(spi)); } int spi_flash_read(struct spi_device *spi, @@ -1220,7 +1252,7 @@ int spi_flash_read(struct spi_device *spi, * @irq: Initializes spi_device.irq; depends on how the board is wired. * @max_speed_hz: Initializes spi_device.max_speed_hz; based on limits * from the chip datasheet and board-specific signal quality issues. - * @bus_num: Identifies which spi_master parents the spi_device; unused + * @bus_num: Identifies which spi_controller parents the spi_device; unused * by spi_new_device(), and otherwise depends on board wiring. * @chip_select: Initializes spi_device.chip_select; depends on how * the board is wired. @@ -1261,7 +1293,7 @@ struct spi_board_info { /* bus_num is board specific and matches the bus_num of some - * spi_master that will probably be registered later. + * spi_controller that will probably be registered later. * * chip_select reflects how this chip is wired to that master; * it's less than num_chipselect. @@ -1295,7 +1327,7 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n) /* If you're hotplugging an adapter with devices (parport, usb, etc) * use spi_new_device() to describe each device. You can also call * spi_unregister_device() to start making that device vanish, but - * normally that would be handled by spi_unregister_master(). + * normally that would be handled by spi_unregister_controller(). * * You can also use spi_alloc_device() and spi_add_device() to use a two * stage registration sequence for each spi_device. This gives the caller @@ -1304,13 +1336,13 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n) * be defined using the board info. */ extern struct spi_device * -spi_alloc_device(struct spi_master *master); +spi_alloc_device(struct spi_controller *ctlr); extern int spi_add_device(struct spi_device *spi); extern struct spi_device * -spi_new_device(struct spi_master *, struct spi_board_info *); +spi_new_device(struct spi_controller *, struct spi_board_info *); extern void spi_unregister_device(struct spi_device *spi); @@ -1318,9 +1350,32 @@ extern const struct spi_device_id * spi_get_device_id(const struct spi_device *sdev); static inline bool -spi_transfer_is_last(struct spi_master *master, struct spi_transfer *xfer) +spi_transfer_is_last(struct spi_controller *ctlr, struct spi_transfer *xfer) { - return list_is_last(&xfer->transfer_list, &master->cur_msg->transfers); + return list_is_last(&xfer->transfer_list, &ctlr->cur_msg->transfers); } + +/* Compatibility layer */ +#define spi_master spi_controller + +#define SPI_MASTER_HALF_DUPLEX SPI_CONTROLLER_HALF_DUPLEX +#define SPI_MASTER_NO_RX SPI_CONTROLLER_NO_RX +#define SPI_MASTER_NO_TX SPI_CONTROLLER_NO_TX +#define SPI_MASTER_MUST_RX SPI_CONTROLLER_MUST_RX +#define SPI_MASTER_MUST_TX SPI_CONTROLLER_MUST_TX + +#define spi_master_get_devdata(_ctlr) spi_controller_get_devdata(_ctlr) +#define spi_master_set_devdata(_ctlr, _data) \ + spi_controller_set_devdata(_ctlr, _data) +#define spi_master_get(_ctlr) spi_controller_get(_ctlr) +#define spi_master_put(_ctlr) spi_controller_put(_ctlr) +#define spi_master_suspend(_ctlr) spi_controller_suspend(_ctlr) +#define spi_master_resume(_ctlr) spi_controller_resume(_ctlr) + +#define spi_register_master(_ctlr) spi_register_controller(_ctlr) +#define devm_spi_register_master(_dev, _ctlr) \ + devm_spi_register_controller(_dev, _ctlr) +#define spi_unregister_master(_ctlr) spi_unregister_controller(_ctlr) + #endif /* __LINUX_SPI_H */ diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index 59248dcc6ef3..d9510e8522d4 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -369,6 +369,26 @@ static __always_inline int spin_trylock_irq(spinlock_t *lock) raw_spin_trylock_irqsave(spinlock_check(lock), flags); \ }) +/** + * spin_unlock_wait - Interpose between successive critical sections + * @lock: the spinlock whose critical sections are to be interposed. + * + * Semantically this is equivalent to a spin_lock() immediately + * followed by a spin_unlock(). However, most architectures have + * more efficient implementations in which the spin_unlock_wait() + * cannot block concurrent lock acquisition, and in some cases + * where spin_unlock_wait() does not write to the lock variable. + * Nevertheless, spin_unlock_wait() can have high overhead, so if + * you feel the need to use it, please check to see if there is + * a better way to get your job done. + * + * The ordering guarantees provided by spin_unlock_wait() are: + * + * 1. All accesses preceding the spin_unlock_wait() happen before + * any accesses in later critical sections for this same lock. + * 2. All accesses following the spin_unlock_wait() happen after + * any accesses in earlier critical sections for this same lock. + */ static __always_inline void spin_unlock_wait(spinlock_t *lock) { raw_spin_unlock_wait(&lock->rlock); diff --git a/include/linux/sram.h b/include/linux/sram.h index c97dcbe8ce25..4fb405fb0480 100644 --- a/include/linux/sram.h +++ b/include/linux/sram.h @@ -16,12 +16,12 @@ struct gen_pool; #ifdef CONFIG_SRAM_EXEC -int sram_exec_copy(struct gen_pool *pool, void *dst, void *src, size_t size); +void *sram_exec_copy(struct gen_pool *pool, void *dst, void *src, size_t size); #else -static inline int sram_exec_copy(struct gen_pool *pool, void *dst, void *src, - size_t size) +static inline void *sram_exec_copy(struct gen_pool *pool, void *dst, void *src, + size_t size) { - return -ENODEV; + return NULL; } #endif /* CONFIG_SRAM_EXEC */ #endif /* __LINUX_SRAM_H__ */ diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 167ad8831aaf..39af9bc0f653 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -60,32 +60,15 @@ int init_srcu_struct(struct srcu_struct *sp); #include <linux/srcutiny.h> #elif defined(CONFIG_TREE_SRCU) #include <linux/srcutree.h> -#elif defined(CONFIG_CLASSIC_SRCU) -#include <linux/srcuclassic.h> -#else +#elif defined(CONFIG_SRCU) #error "Unknown SRCU implementation specified to kernel configuration" +#else +/* Dummy definition for things like notifiers. Actual use gets link error. */ +struct srcu_struct { }; #endif -/** - * call_srcu() - Queue a callback for invocation after an SRCU grace period - * @sp: srcu_struct in queue the callback - * @head: structure to be used for queueing the SRCU callback. - * @func: function to be invoked after the SRCU grace period - * - * The callback function will be invoked some time after a full SRCU - * grace period elapses, in other words after all pre-existing SRCU - * read-side critical sections have completed. However, the callback - * function might well execute concurrently with other SRCU read-side - * critical sections that started after call_srcu() was invoked. SRCU - * read-side critical sections are delimited by srcu_read_lock() and - * srcu_read_unlock(), and may be nested. - * - * The callback will be invoked from process context, but must nevertheless - * be fast and must not block. - */ void call_srcu(struct srcu_struct *sp, struct rcu_head *head, void (*func)(struct rcu_head *head)); - void cleanup_srcu_struct(struct srcu_struct *sp); int __srcu_read_lock(struct srcu_struct *sp) __acquires(sp); void __srcu_read_unlock(struct srcu_struct *sp, int idx) __releases(sp); @@ -172,9 +155,7 @@ static inline int srcu_read_lock(struct srcu_struct *sp) __acquires(sp) { int retval; - preempt_disable(); retval = __srcu_read_lock(sp); - preempt_enable(); rcu_lock_acquire(&(sp)->dep_map); return retval; } diff --git a/include/linux/srcuclassic.h b/include/linux/srcuclassic.h deleted file mode 100644 index 5753f7322262..000000000000 --- a/include/linux/srcuclassic.h +++ /dev/null @@ -1,115 +0,0 @@ -/* - * Sleepable Read-Copy Update mechanism for mutual exclusion, - * classic v4.11 variant. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, you can access it online at - * http://www.gnu.org/licenses/gpl-2.0.html. - * - * Copyright (C) IBM Corporation, 2017 - * - * Author: Paul McKenney <paulmck@us.ibm.com> - */ - -#ifndef _LINUX_SRCU_CLASSIC_H -#define _LINUX_SRCU_CLASSIC_H - -struct srcu_array { - unsigned long lock_count[2]; - unsigned long unlock_count[2]; -}; - -struct rcu_batch { - struct rcu_head *head, **tail; -}; - -#define RCU_BATCH_INIT(name) { NULL, &(name.head) } - -struct srcu_struct { - unsigned long completed; - struct srcu_array __percpu *per_cpu_ref; - spinlock_t queue_lock; /* protect ->batch_queue, ->running */ - bool running; - /* callbacks just queued */ - struct rcu_batch batch_queue; - /* callbacks try to do the first check_zero */ - struct rcu_batch batch_check0; - /* callbacks done with the first check_zero and the flip */ - struct rcu_batch batch_check1; - struct rcu_batch batch_done; - struct delayed_work work; -#ifdef CONFIG_DEBUG_LOCK_ALLOC - struct lockdep_map dep_map; -#endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ -}; - -void process_srcu(struct work_struct *work); - -#define __SRCU_STRUCT_INIT(name) \ - { \ - .completed = -300, \ - .per_cpu_ref = &name##_srcu_array, \ - .queue_lock = __SPIN_LOCK_UNLOCKED(name.queue_lock), \ - .running = false, \ - .batch_queue = RCU_BATCH_INIT(name.batch_queue), \ - .batch_check0 = RCU_BATCH_INIT(name.batch_check0), \ - .batch_check1 = RCU_BATCH_INIT(name.batch_check1), \ - .batch_done = RCU_BATCH_INIT(name.batch_done), \ - .work = __DELAYED_WORK_INITIALIZER(name.work, process_srcu, 0),\ - __SRCU_DEP_MAP_INIT(name) \ - } - -/* - * Define and initialize a srcu struct at build time. - * Do -not- call init_srcu_struct() nor cleanup_srcu_struct() on it. - * - * Note that although DEFINE_STATIC_SRCU() hides the name from other - * files, the per-CPU variable rules nevertheless require that the - * chosen name be globally unique. These rules also prohibit use of - * DEFINE_STATIC_SRCU() within a function. If these rules are too - * restrictive, declare the srcu_struct manually. For example, in - * each file: - * - * static struct srcu_struct my_srcu; - * - * Then, before the first use of each my_srcu, manually initialize it: - * - * init_srcu_struct(&my_srcu); - * - * See include/linux/percpu-defs.h for the rules on per-CPU variables. - */ -#define __DEFINE_SRCU(name, is_static) \ - static DEFINE_PER_CPU(struct srcu_array, name##_srcu_array);\ - is_static struct srcu_struct name = __SRCU_STRUCT_INIT(name) -#define DEFINE_SRCU(name) __DEFINE_SRCU(name, /* not static */) -#define DEFINE_STATIC_SRCU(name) __DEFINE_SRCU(name, static) - -void synchronize_srcu_expedited(struct srcu_struct *sp); -void srcu_barrier(struct srcu_struct *sp); -unsigned long srcu_batches_completed(struct srcu_struct *sp); - -static inline void srcutorture_get_gp_data(enum rcutorture_type test_type, - struct srcu_struct *sp, int *flags, - unsigned long *gpnum, - unsigned long *completed) -{ - if (test_type != SRCU_FLAVOR) - return; - *flags = 0; - *completed = sp->completed; - *gpnum = *completed; - if (sp->batch_queue.head || sp->batch_check0.head || sp->batch_check0.head) - (*gpnum)++; -} - -#endif diff --git a/include/linux/srcutiny.h b/include/linux/srcutiny.h index 42311ee0334f..cfbfc540cafc 100644 --- a/include/linux/srcutiny.h +++ b/include/linux/srcutiny.h @@ -27,15 +27,14 @@ #include <linux/swait.h> struct srcu_struct { - int srcu_lock_nesting[2]; /* srcu_read_lock() nesting depth. */ + short srcu_lock_nesting[2]; /* srcu_read_lock() nesting depth. */ + short srcu_idx; /* Current reader array element. */ + u8 srcu_gp_running; /* GP workqueue running? */ + u8 srcu_gp_waiting; /* GP waiting for readers? */ struct swait_queue_head srcu_wq; /* Last srcu_read_unlock() wakes GP. */ - unsigned long srcu_gp_seq; /* GP seq # for callback tagging. */ - struct rcu_segcblist srcu_cblist; - /* Pending SRCU callbacks. */ - int srcu_idx; /* Current reader array element. */ - bool srcu_gp_running; /* GP workqueue running? */ - bool srcu_gp_waiting; /* GP waiting for readers? */ + struct rcu_head *srcu_cb_head; /* Pending callbacks: Head. */ + struct rcu_head **srcu_cb_tail; /* Pending callbacks: Tail. */ struct work_struct srcu_work; /* For driving grace periods. */ #ifdef CONFIG_DEBUG_LOCK_ALLOC struct lockdep_map dep_map; @@ -47,7 +46,7 @@ void srcu_drive_gp(struct work_struct *wp); #define __SRCU_STRUCT_INIT(name) \ { \ .srcu_wq = __SWAIT_QUEUE_HEAD_INITIALIZER(name.srcu_wq), \ - .srcu_cblist = RCU_SEGCBLIST_INITIALIZER(name.srcu_cblist), \ + .srcu_cb_tail = &name.srcu_cb_head, \ .srcu_work = __WORK_INITIALIZER(name.srcu_work, srcu_drive_gp), \ __SRCU_DEP_MAP_INIT(name) \ } @@ -63,31 +62,29 @@ void srcu_drive_gp(struct work_struct *wp); void synchronize_srcu(struct srcu_struct *sp); -static inline void synchronize_srcu_expedited(struct srcu_struct *sp) +/* + * Counts the new reader in the appropriate per-CPU element of the + * srcu_struct. Can be invoked from irq/bh handlers, but the matching + * __srcu_read_unlock() must be in the same handler instance. Returns an + * index that must be passed to the matching srcu_read_unlock(). + */ +static inline int __srcu_read_lock(struct srcu_struct *sp) { - synchronize_srcu(sp); -} + int idx; -static inline void srcu_barrier(struct srcu_struct *sp) -{ - synchronize_srcu(sp); + idx = READ_ONCE(sp->srcu_idx); + WRITE_ONCE(sp->srcu_lock_nesting[idx], sp->srcu_lock_nesting[idx] + 1); + return idx; } -static inline unsigned long srcu_batches_completed(struct srcu_struct *sp) +static inline void synchronize_srcu_expedited(struct srcu_struct *sp) { - return 0; + synchronize_srcu(sp); } -static inline void srcutorture_get_gp_data(enum rcutorture_type test_type, - struct srcu_struct *sp, int *flags, - unsigned long *gpnum, - unsigned long *completed) +static inline void srcu_barrier(struct srcu_struct *sp) { - if (test_type != SRCU_FLAVOR) - return; - *flags = 0; - *completed = sp->srcu_gp_seq; - *gpnum = *completed; + synchronize_srcu(sp); } #endif diff --git a/include/linux/srcutree.h b/include/linux/srcutree.h index 32e86d85fd11..42973f787e7e 100644 --- a/include/linux/srcutree.h +++ b/include/linux/srcutree.h @@ -40,7 +40,7 @@ struct srcu_data { unsigned long srcu_unlock_count[2]; /* Unlocks per CPU. */ /* Update-side state. */ - spinlock_t lock ____cacheline_internodealigned_in_smp; + raw_spinlock_t __private lock ____cacheline_internodealigned_in_smp; struct rcu_segcblist srcu_cblist; /* List of callbacks.*/ unsigned long srcu_gp_seq_needed; /* Furthest future GP needed. */ unsigned long srcu_gp_seq_needed_exp; /* Furthest future exp GP. */ @@ -58,7 +58,7 @@ struct srcu_data { * Node in SRCU combining tree, similar in function to rcu_data. */ struct srcu_node { - spinlock_t lock; + raw_spinlock_t __private lock; unsigned long srcu_have_cbs[4]; /* GP seq for children */ /* having CBs, but only */ /* is > ->srcu_gq_seq. */ @@ -78,7 +78,7 @@ struct srcu_struct { struct srcu_node *level[RCU_NUM_LVLS + 1]; /* First node at each level. */ struct mutex srcu_cb_mutex; /* Serialize CB preparation. */ - spinlock_t gp_lock; /* protect ->srcu_cblist */ + raw_spinlock_t __private lock; /* Protect counters */ struct mutex srcu_gp_mutex; /* Serialize GP work. */ unsigned int srcu_idx; /* Current rdr array element. */ unsigned long srcu_gp_seq; /* Grace-period seq #. */ @@ -109,7 +109,7 @@ void process_srcu(struct work_struct *work); #define __SRCU_STRUCT_INIT(name) \ { \ .sda = &name##_srcu_data, \ - .gp_lock = __SPIN_LOCK_UNLOCKED(name.gp_lock), \ + .lock = __RAW_SPIN_LOCK_UNLOCKED(name.lock), \ .srcu_gp_seq_needed = 0 - 1, \ __SRCU_DEP_MAP_INIT(name) \ } @@ -141,10 +141,5 @@ void process_srcu(struct work_struct *work); void synchronize_srcu_expedited(struct srcu_struct *sp); void srcu_barrier(struct srcu_struct *sp); -unsigned long srcu_batches_completed(struct srcu_struct *sp); - -void srcutorture_get_gp_data(enum rcutorture_type test_type, - struct srcu_struct *sp, int *flags, - unsigned long *gpnum, unsigned long *completed); #endif diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h index 3cc9632dcc2a..3d60275e3ba9 100644 --- a/include/linux/stop_machine.h +++ b/include/linux/stop_machine.h @@ -116,15 +116,29 @@ static inline int try_stop_cpus(const struct cpumask *cpumask, * @fn() runs. * * This can be thought of as a very heavy write lock, equivalent to - * grabbing every spinlock in the kernel. */ + * grabbing every spinlock in the kernel. + * + * Protects against CPU hotplug. + */ int stop_machine(cpu_stop_fn_t fn, void *data, const struct cpumask *cpus); +/** + * stop_machine_cpuslocked: freeze the machine on all CPUs and run this function + * @fn: the function to run + * @data: the data ptr for the @fn() + * @cpus: the cpus to run the @fn() on (NULL = any online cpu) + * + * Same as above. Must be called from with in a cpus_read_lock() protected + * region. Avoids nested calls to cpus_read_lock(). + */ +int stop_machine_cpuslocked(cpu_stop_fn_t fn, void *data, const struct cpumask *cpus); + int stop_machine_from_inactive_cpu(cpu_stop_fn_t fn, void *data, const struct cpumask *cpus); #else /* CONFIG_SMP || CONFIG_HOTPLUG_CPU */ -static inline int stop_machine(cpu_stop_fn_t fn, void *data, - const struct cpumask *cpus) +static inline int stop_machine_cpuslocked(cpu_stop_fn_t fn, void *data, + const struct cpumask *cpus) { unsigned long flags; int ret; @@ -134,6 +148,12 @@ static inline int stop_machine(cpu_stop_fn_t fn, void *data, return ret; } +static inline int stop_machine(cpu_stop_fn_t fn, void *data, + const struct cpumask *cpus) +{ + return stop_machine_cpuslocked(fn, data, cpus); +} + static inline int stop_machine_from_inactive_cpu(cpu_stop_fn_t fn, void *data, const struct cpumask *cpus) { diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index 7ba040c797ec..9d7529ffc4ce 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -13,7 +13,7 @@ #include <linux/ktime.h> #include <linux/sunrpc/types.h> #include <linux/spinlock.h> -#include <linux/wait.h> +#include <linux/wait_bit.h> #include <linux/workqueue.h> #include <linux/sunrpc/xdr.h> diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 94631026f79c..11cef5a7bc87 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -336,7 +336,8 @@ xdr_argsize_check(struct svc_rqst *rqstp, __be32 *p) { char *cp = (char *)p; struct kvec *vec = &rqstp->rq_arg.head[0]; - return cp == (char *)vec->iov_base + vec->iov_len; + return cp >= (char*)vec->iov_base + && cp <= (char*)vec->iov_base + vec->iov_len; } static inline int diff --git a/include/linux/superhyway.h b/include/linux/superhyway.h index 17ea468fa362..8d3376775813 100644 --- a/include/linux/superhyway.h +++ b/include/linux/superhyway.h @@ -101,7 +101,7 @@ int superhyway_add_device(unsigned long base, struct superhyway_device *, struct int superhyway_add_devices(struct superhyway_bus *bus, struct superhyway_device **devices, int nr_devices); /* drivers/sh/superhyway/superhyway-sysfs.c */ -extern struct device_attribute superhyway_dev_attrs[]; +extern const struct attribute_group *superhyway_dev_groups[]; #endif /* __LINUX_SUPERHYWAY_H */ diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index c6f0f0d0e17e..aa02c328dff5 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -512,7 +512,7 @@ static inline void sysfs_notify_dirent(struct kernfs_node *kn) } static inline struct kernfs_node *sysfs_get_dirent(struct kernfs_node *parent, - const unsigned char *name) + const char *name) { return kernfs_find_and_get(parent, name); } diff --git a/include/linux/timekeeper_internal.h b/include/linux/timekeeper_internal.h index 110f4532188c..0a0a53daf2a2 100644 --- a/include/linux/timekeeper_internal.h +++ b/include/linux/timekeeper_internal.h @@ -29,7 +29,6 @@ */ struct tk_read_base { struct clocksource *clock; - u64 (*read)(struct clocksource *cs); u64 mask; u64 cycle_last; u32 mult; @@ -52,13 +51,13 @@ struct tk_read_base { * @clock_was_set_seq: The sequence number of clock was set events * @cs_was_changed_seq: The sequence number of clocksource change events * @next_leap_ktime: CLOCK_MONOTONIC time value of a pending leap-second - * @raw_time: Monotonic raw base time in timespec64 format + * @raw_sec: CLOCK_MONOTONIC_RAW time in seconds * @cycle_interval: Number of clock cycles in one NTP interval * @xtime_interval: Number of clock shifted nano seconds in one NTP * interval. * @xtime_remainder: Shifted nano seconds left over when rounding * @cycle_interval - * @raw_interval: Raw nano seconds accumulated per NTP interval. + * @raw_interval: Shifted raw nano seconds accumulated per NTP interval. * @ntp_error: Difference between accumulated time and NTP time in ntp * shifted nano seconds. * @ntp_error_shift: Shift conversion between clock shifted nano seconds and @@ -94,13 +93,13 @@ struct timekeeper { unsigned int clock_was_set_seq; u8 cs_was_changed_seq; ktime_t next_leap_ktime; - struct timespec64 raw_time; + u64 raw_sec; /* The following members are for timekeeping internal use */ u64 cycle_interval; u64 xtime_interval; s64 xtime_remainder; - u32 raw_interval; + u64 raw_interval; /* The ntp_tick_length() value currently being used. * This cached copy ensures we consistently apply the tick * length for an entire tick, as ntp_tick_length may change diff --git a/include/linux/tty.h b/include/linux/tty.h index eccb4ec30a8a..69464c0d8068 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -316,7 +316,6 @@ struct tty_struct { struct tty_struct *link; struct fasync_struct *fasync; - int alt_speed; /* For magic substitution of 38400 bps */ wait_queue_head_t write_wait; wait_queue_head_t read_wait; struct work_struct hangup_work; @@ -400,6 +399,9 @@ extern struct tty_struct *get_current_tty(void); /* tty_io.c */ extern int __init tty_init(void); extern const char *tty_name(const struct tty_struct *tty); +extern struct tty_struct *tty_open_by_driver(dev_t device, struct inode *inode, + struct file *filp); +extern int tty_dev_name_to_number(const char *name, dev_t *number); #else static inline void tty_kref_put(struct tty_struct *tty) { } @@ -420,6 +422,11 @@ static inline int __init tty_init(void) { return 0; } static inline const char *tty_name(const struct tty_struct *tty) { return "(none)"; } +static inline struct tty_struct *tty_open_by_driver(dev_t device, + struct inode *inode, struct file *filp) +{ return NULL; } +static inline int tty_dev_name_to_number(const char *name, dev_t *number) +{ return -ENOTSUPP; } #endif extern struct ktermios tty_std_termios; diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index fbc22a39e7bc..1a4a4bacfae6 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -304,6 +304,7 @@ struct usb_gadget_ops { int (*udc_start)(struct usb_gadget *, struct usb_gadget_driver *); int (*udc_stop)(struct usb_gadget *); + void (*udc_set_speed)(struct usb_gadget *, enum usb_device_speed); struct usb_ep *(*match_ep)(struct usb_gadget *, struct usb_endpoint_descriptor *, struct usb_ss_ep_comp_descriptor *); @@ -352,6 +353,8 @@ struct usb_gadget_ops { * @deactivated: True if gadget is deactivated - in deactivated state it cannot * be connected. * @connected: True if gadget is connected. + * @lpm_capable: If the gadget max_speed is FULL or HIGH, this flag + * indicates that it supports LPM as per the LPM ECN & errata. * * Gadgets have a mostly-portable "gadget driver" implementing device * functions, handling all usb configurations and interfaces. Gadget @@ -404,6 +407,7 @@ struct usb_gadget { unsigned is_selfpowered:1; unsigned deactivated:1; unsigned connected:1; + unsigned lpm_capable:1; }; #define work_to_gadget(w) (container_of((w), struct usb_gadget, work)) diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 50398b69ca44..a1f03ebfde47 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -565,9 +565,9 @@ extern void usb_ep0_reinit(struct usb_device *); ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) #define EndpointRequest \ - ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) + ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8) #define EndpointOutRequest \ - ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) + ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8) /* class requests from the USB 2.0 hub spec, table 11-15 */ #define HUB_CLASS_REQ(dir, type, request) ((((dir) | (type)) << 8) | (request)) diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index 31a8068c42a5..299245105610 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -9,6 +9,7 @@ #ifndef __LINUX_USB_PHY_H #define __LINUX_USB_PHY_H +#include <linux/extcon.h> #include <linux/notifier.h> #include <linux/usb.h> @@ -85,6 +86,12 @@ struct usb_phy { struct usb_phy_io_ops *io_ops; void __iomem *io_priv; + /* to support extcon device */ + struct extcon_dev *edev; + struct extcon_dev *id_edev; + struct notifier_block vbus_nb; + struct notifier_block id_nb; + /* for notification of usb_phy_events */ struct atomic_notifier_head notifier; diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h index ec78204964ab..ffe7487886ca 100644 --- a/include/linux/usb/typec.h +++ b/include/linux/usb/typec.h @@ -117,13 +117,13 @@ struct typec_altmode_desc { struct typec_altmode *typec_partner_register_altmode(struct typec_partner *partner, - struct typec_altmode_desc *desc); + const struct typec_altmode_desc *desc); struct typec_altmode *typec_plug_register_altmode(struct typec_plug *plug, - struct typec_altmode_desc *desc); + const struct typec_altmode_desc *desc); struct typec_altmode *typec_port_register_altmode(struct typec_port *port, - struct typec_altmode_desc *desc); + const struct typec_altmode_desc *desc); void typec_unregister_altmode(struct typec_altmode *altmode); struct typec_port *typec_altmode2port(struct typec_altmode *alt); @@ -190,6 +190,7 @@ struct typec_partner_desc { * @pr_set: Set Power Role * @vconn_set: Set VCONN Role * @activate_mode: Enter/exit given Alternate Mode + * @port_type_set: Set port type * * Static capabilities of a single USB Type-C port. */ @@ -214,6 +215,9 @@ struct typec_capability { int (*activate_mode)(const struct typec_capability *, int mode, int activate); + int (*port_type_set)(const struct typec_capability *, + enum typec_port_type); + }; /* Specific to try_role(). Indicates the user want's to clear the preference. */ diff --git a/include/linux/uuid.h b/include/linux/uuid.h index 4dff73a89758..d1defe4ab167 100644 --- a/include/linux/uuid.h +++ b/include/linux/uuid.h @@ -18,29 +18,16 @@ #include <uapi/linux/uuid.h> -/* - * V1 (time-based) UUID definition [RFC 4122]. - * - the timestamp is a 60-bit value, split 32/16/12, and goes in 100ns - * increments since midnight 15th October 1582 - * - add AFS_UUID_TO_UNIX_TIME to convert unix time in 100ns units to UUID - * time - * - the clock sequence is a 14-bit counter to avoid duplicate times - */ -struct uuid_v1 { - __be32 time_low; /* low part of timestamp */ - __be16 time_mid; /* mid part of timestamp */ - __be16 time_hi_and_version; /* high part of timestamp and version */ -#define UUID_TO_UNIX_TIME 0x01b21dd213814000ULL -#define UUID_TIMEHI_MASK 0x0fff -#define UUID_VERSION_TIME 0x1000 /* time-based UUID */ -#define UUID_VERSION_NAME 0x3000 /* name-based UUID */ -#define UUID_VERSION_RANDOM 0x4000 /* (pseudo-)random generated UUID */ - u8 clock_seq_hi_and_reserved; /* clock seq hi and variant */ -#define UUID_CLOCKHI_MASK 0x3f -#define UUID_VARIANT_STD 0x80 - u8 clock_seq_low; /* clock seq low */ - u8 node[6]; /* spatially unique node ID (MAC addr) */ -}; +typedef struct { + __u8 b[16]; +} uuid_t; + +#define UUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ +((uuid_t) \ +{{ ((a) >> 24) & 0xff, ((a) >> 16) & 0xff, ((a) >> 8) & 0xff, (a) & 0xff, \ + ((b) >> 8) & 0xff, (b) & 0xff, \ + ((c) >> 8) & 0xff, (c) & 0xff, \ + (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) /* * The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee") @@ -48,27 +35,73 @@ struct uuid_v1 { */ #define UUID_STRING_LEN 36 -static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2) +extern const guid_t guid_null; +extern const uuid_t uuid_null; + +static inline bool guid_equal(const guid_t *u1, const guid_t *u2) +{ + return memcmp(u1, u2, sizeof(guid_t)) == 0; +} + +static inline void guid_copy(guid_t *dst, const guid_t *src) +{ + memcpy(dst, src, sizeof(guid_t)); +} + +static inline bool guid_is_null(const guid_t *guid) +{ + return guid_equal(guid, &guid_null); +} + +static inline bool uuid_equal(const uuid_t *u1, const uuid_t *u2) +{ + return memcmp(u1, u2, sizeof(uuid_t)) == 0; +} + +static inline void uuid_copy(uuid_t *dst, const uuid_t *src) { - return memcmp(&u1, &u2, sizeof(uuid_le)); + memcpy(dst, src, sizeof(uuid_t)); } -static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2) +static inline bool uuid_is_null(const uuid_t *uuid) { - return memcmp(&u1, &u2, sizeof(uuid_be)); + return uuid_equal(uuid, &uuid_null); } void generate_random_uuid(unsigned char uuid[16]); -extern void uuid_le_gen(uuid_le *u); -extern void uuid_be_gen(uuid_be *u); +extern void guid_gen(guid_t *u); +extern void uuid_gen(uuid_t *u); bool __must_check uuid_is_valid(const char *uuid); -extern const u8 uuid_le_index[16]; -extern const u8 uuid_be_index[16]; +extern const u8 guid_index[16]; +extern const u8 uuid_index[16]; + +int guid_parse(const char *uuid, guid_t *u); +int uuid_parse(const char *uuid, uuid_t *u); + +/* backwards compatibility, don't use in new code */ +typedef uuid_t uuid_be; +#define UUID_BE(a, _b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ + UUID_INIT(a, _b, c, d0, d1, d2, d3, d4, d5, d6, d7) +#define NULL_UUID_BE \ + UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \ + 0x00, 0x00, 0x00, 0x00) -int uuid_le_to_bin(const char *uuid, uuid_le *u); -int uuid_be_to_bin(const char *uuid, uuid_be *u); +#define uuid_le_gen(u) guid_gen(u) +#define uuid_be_gen(u) uuid_gen(u) +#define uuid_le_to_bin(guid, u) guid_parse(guid, u) +#define uuid_be_to_bin(uuid, u) uuid_parse(uuid, u) + +static inline int uuid_le_cmp(const guid_t u1, const guid_t u2) +{ + return memcmp(&u1, &u2, sizeof(guid_t)); +} + +static inline int uuid_be_cmp(const uuid_t u1, const uuid_t u2) +{ + return memcmp(&u1, &u2, sizeof(uuid_t)); +} #endif diff --git a/include/linux/vfio.h b/include/linux/vfio.h index edf9b2cad277..f57076b958b7 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -183,7 +183,7 @@ struct virqfd { void (*thread)(void *, void *); void *data; struct work_struct inject; - wait_queue_t wait; + wait_queue_entry_t wait; poll_table pt; struct work_struct shutdown; struct virqfd **pvirqfd; diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index d84ae90ccd5c..be3ab2d13adf 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -93,10 +93,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, #endif #endif #ifdef CONFIG_DEBUG_TLBFLUSH -#ifdef CONFIG_SMP NR_TLB_REMOTE_FLUSH, /* cpu tried to flush others' tlbs */ NR_TLB_REMOTE_FLUSH_RECEIVED,/* cpu received ipi for flush */ -#endif /* CONFIG_SMP */ NR_TLB_LOCAL_FLUSH_ALL, NR_TLB_LOCAL_FLUSH_ONE, #endif /* CONFIG_DEBUG_TLBFLUSH */ diff --git a/include/linux/w1.h b/include/linux/w1.h new file mode 100644 index 000000000000..90cbe7e65059 --- /dev/null +++ b/include/linux/w1.h @@ -0,0 +1,320 @@ +/* + * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_W1_H +#define __LINUX_W1_H + +#include <linux/device.h> + +/** + * struct w1_reg_num - broken out slave device id + * + * @family: identifies the type of device + * @id: along with family is the unique device id + * @crc: checksum of the other bytes + */ +struct w1_reg_num { +#if defined(__LITTLE_ENDIAN_BITFIELD) + __u64 family:8, + id:48, + crc:8; +#elif defined(__BIG_ENDIAN_BITFIELD) + __u64 crc:8, + id:48, + family:8; +#else +#error "Please fix <asm/byteorder.h>" +#endif +}; + +#ifdef __KERNEL__ + +#define W1_MAXNAMELEN 32 + +#define W1_SEARCH 0xF0 +#define W1_ALARM_SEARCH 0xEC +#define W1_CONVERT_TEMP 0x44 +#define W1_SKIP_ROM 0xCC +#define W1_COPY_SCRATCHPAD 0x48 +#define W1_WRITE_SCRATCHPAD 0x4E +#define W1_READ_SCRATCHPAD 0xBE +#define W1_READ_ROM 0x33 +#define W1_READ_PSUPPLY 0xB4 +#define W1_MATCH_ROM 0x55 +#define W1_RESUME_CMD 0xA5 + +/** + * struct w1_slave - holds a single slave device on the bus + * + * @owner: Points to the one wire "wire" kernel module. + * @name: Device id is ascii. + * @w1_slave_entry: data for the linked list + * @reg_num: the slave id in binary + * @refcnt: reference count, delete when 0 + * @flags: bit flags for W1_SLAVE_ACTIVE W1_SLAVE_DETACH + * @ttl: decrement per search this slave isn't found, deatch at 0 + * @master: bus which this slave is on + * @family: module for device family type + * @family_data: pointer for use by the family module + * @dev: kernel device identifier + * + */ +struct w1_slave { + struct module *owner; + unsigned char name[W1_MAXNAMELEN]; + struct list_head w1_slave_entry; + struct w1_reg_num reg_num; + atomic_t refcnt; + int ttl; + unsigned long flags; + + struct w1_master *master; + struct w1_family *family; + void *family_data; + struct device dev; +}; + +typedef void (*w1_slave_found_callback)(struct w1_master *, u64); + +/** + * struct w1_bus_master - operations available on a bus master + * + * @data: the first parameter in all the functions below + * + * @read_bit: Sample the line level @return the level read (0 or 1) + * + * @write_bit: Sets the line level + * + * @touch_bit: the lowest-level function for devices that really support the + * 1-wire protocol. + * touch_bit(0) = write-0 cycle + * touch_bit(1) = write-1 / read cycle + * @return the bit read (0 or 1) + * + * @read_byte: Reads a bytes. Same as 8 touch_bit(1) calls. + * @return the byte read + * + * @write_byte: Writes a byte. Same as 8 touch_bit(x) calls. + * + * @read_block: Same as a series of read_byte() calls + * @return the number of bytes read + * + * @write_block: Same as a series of write_byte() calls + * + * @triplet: Combines two reads and a smart write for ROM searches + * @return bit0=Id bit1=comp_id bit2=dir_taken + * + * @reset_bus: long write-0 with a read for the presence pulse detection + * @return -1=Error, 0=Device present, 1=No device present + * + * @set_pullup: Put out a strong pull-up pulse of the specified duration. + * @return -1=Error, 0=completed + * + * @search: Really nice hardware can handles the different types of ROM search + * w1_master* is passed to the slave found callback. + * u8 is search_type, W1_SEARCH or W1_ALARM_SEARCH + * + * Note: read_bit and write_bit are very low level functions and should only + * be used with hardware that doesn't really support 1-wire operations, + * like a parallel/serial port. + * Either define read_bit and write_bit OR define, at minimum, touch_bit and + * reset_bus. + * + */ +struct w1_bus_master { + void *data; + + u8 (*read_bit)(void *); + + void (*write_bit)(void *, u8); + + u8 (*touch_bit)(void *, u8); + + u8 (*read_byte)(void *); + + void (*write_byte)(void *, u8); + + u8 (*read_block)(void *, u8 *, int); + + void (*write_block)(void *, const u8 *, int); + + u8 (*triplet)(void *, u8); + + u8 (*reset_bus)(void *); + + u8 (*set_pullup)(void *, int); + + void (*search)(void *, struct w1_master *, + u8, w1_slave_found_callback); +}; + +/** + * enum w1_master_flags - bitfields used in w1_master.flags + * @W1_ABORT_SEARCH: abort searching early on shutdown + * @W1_WARN_MAX_COUNT: limit warning when the maximum count is reached + */ +enum w1_master_flags { + W1_ABORT_SEARCH = 0, + W1_WARN_MAX_COUNT = 1, +}; + +/** + * struct w1_master - one per bus master + * @w1_master_entry: master linked list + * @owner: module owner + * @name: dynamically allocate bus name + * @list_mutex: protect slist and async_list + * @slist: linked list of slaves + * @async_list: linked list of netlink commands to execute + * @max_slave_count: maximum number of slaves to search for at a time + * @slave_count: current number of slaves known + * @attempts: number of searches ran + * @slave_ttl: number of searches before a slave is timed out + * @initialized: prevent init/removal race conditions + * @id: w1 bus number + * @search_count: number of automatic searches to run, -1 unlimited + * @search_id: allows continuing a search + * @refcnt: reference count + * @priv: private data storage + * @enable_pullup: allows a strong pullup + * @pullup_duration: time for the next strong pullup + * @flags: one of w1_master_flags + * @thread: thread for bus search and netlink commands + * @mutex: protect most of w1_master + * @bus_mutex: pretect concurrent bus access + * @driver: sysfs driver + * @dev: sysfs device + * @bus_master: io operations available + * @seq: sequence number used for netlink broadcasts + */ +struct w1_master { + struct list_head w1_master_entry; + struct module *owner; + unsigned char name[W1_MAXNAMELEN]; + /* list_mutex protects just slist and async_list so slaves can be + * searched for and async commands added while the master has + * w1_master.mutex locked and is operating on the bus. + * lock order w1_mlock, w1_master.mutex, w1_master.list_mutex + */ + struct mutex list_mutex; + struct list_head slist; + struct list_head async_list; + int max_slave_count, slave_count; + unsigned long attempts; + int slave_ttl; + int initialized; + u32 id; + int search_count; + /* id to start searching on, to continue a search or 0 to restart */ + u64 search_id; + + atomic_t refcnt; + + void *priv; + + /** 5V strong pullup enabled flag, 1 enabled, zero disabled. */ + int enable_pullup; + /** 5V strong pullup duration in milliseconds, zero disabled. */ + int pullup_duration; + + long flags; + + struct task_struct *thread; + struct mutex mutex; + struct mutex bus_mutex; + + struct device_driver *driver; + struct device dev; + + struct w1_bus_master *bus_master; + + u32 seq; +}; + +int w1_add_master_device(struct w1_bus_master *master); +void w1_remove_master_device(struct w1_bus_master *master); + +/** + * struct w1_family_ops - operations for a family type + * @add_slave: add_slave + * @remove_slave: remove_slave + * @groups: sysfs group + */ +struct w1_family_ops { + int (*add_slave)(struct w1_slave *sl); + void (*remove_slave)(struct w1_slave *sl); + const struct attribute_group **groups; +}; + +/** + * struct w1_family - reference counted family structure. + * @family_entry: family linked list + * @fid: 8 bit family identifier + * @fops: operations for this family + * @refcnt: reference counter + */ +struct w1_family { + struct list_head family_entry; + u8 fid; + + struct w1_family_ops *fops; + + atomic_t refcnt; +}; + +int w1_register_family(struct w1_family *family); +void w1_unregister_family(struct w1_family *family); + +/** + * module_w1_driver() - Helper macro for registering a 1-Wire families + * @__w1_family: w1_family struct + * + * Helper macro for 1-Wire families which do not do anything special in module + * init/exit. This eliminates a lot of boilerplate. Each module may only + * use this macro once, and calling it replaces module_init() and module_exit() + */ +#define module_w1_family(__w1_family) \ + module_driver(__w1_family, w1_register_family, \ + w1_unregister_family) + +u8 w1_triplet(struct w1_master *dev, int bdir); +void w1_write_8(struct w1_master *, u8); +u8 w1_read_8(struct w1_master *); +int w1_reset_bus(struct w1_master *); +u8 w1_calc_crc8(u8 *, int); +void w1_write_block(struct w1_master *, const u8 *, int); +void w1_touch_block(struct w1_master *, u8 *, int); +u8 w1_read_block(struct w1_master *, u8 *, int); +int w1_reset_select_slave(struct w1_slave *sl); +int w1_reset_resume_command(struct w1_master *); +void w1_next_pullup(struct w1_master *, int); + +static inline struct w1_slave* dev_to_w1_slave(struct device *dev) +{ + return container_of(dev, struct w1_slave, dev); +} + +static inline struct w1_slave* kobj_to_w1_slave(struct kobject *kobj) +{ + return dev_to_w1_slave(container_of(kobj, struct device, kobj)); +} + +static inline struct w1_master* dev_to_w1_master(struct device *dev) +{ + return container_of(dev, struct w1_master, dev); +} + +#endif /* __KERNEL__ */ + +#endif /* __LINUX_W1_H */ diff --git a/include/linux/wait.h b/include/linux/wait.h index db076ca7f11d..b289c96151ee 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h @@ -10,38 +10,30 @@ #include <asm/current.h> #include <uapi/linux/wait.h> -typedef struct __wait_queue wait_queue_t; -typedef int (*wait_queue_func_t)(wait_queue_t *wait, unsigned mode, int flags, void *key); -int default_wake_function(wait_queue_t *wait, unsigned mode, int flags, void *key); +typedef struct wait_queue_entry wait_queue_entry_t; -/* __wait_queue::flags */ +typedef int (*wait_queue_func_t)(struct wait_queue_entry *wq_entry, unsigned mode, int flags, void *key); +int default_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, int flags, void *key); + +/* wait_queue_entry::flags */ #define WQ_FLAG_EXCLUSIVE 0x01 #define WQ_FLAG_WOKEN 0x02 -struct __wait_queue { +/* + * A single wait-queue entry structure: + */ +struct wait_queue_entry { unsigned int flags; void *private; wait_queue_func_t func; - struct list_head task_list; -}; - -struct wait_bit_key { - void *flags; - int bit_nr; -#define WAIT_ATOMIC_T_BIT_NR -1 - unsigned long timeout; + struct list_head entry; }; -struct wait_bit_queue { - struct wait_bit_key key; - wait_queue_t wait; -}; - -struct __wait_queue_head { +struct wait_queue_head { spinlock_t lock; - struct list_head task_list; + struct list_head head; }; -typedef struct __wait_queue_head wait_queue_head_t; +typedef struct wait_queue_head wait_queue_head_t; struct task_struct; @@ -49,82 +41,76 @@ struct task_struct; * Macros for declaration and initialisaton of the datatypes */ -#define __WAITQUEUE_INITIALIZER(name, tsk) { \ - .private = tsk, \ - .func = default_wake_function, \ - .task_list = { NULL, NULL } } +#define __WAITQUEUE_INITIALIZER(name, tsk) { \ + .private = tsk, \ + .func = default_wake_function, \ + .entry = { NULL, NULL } } -#define DECLARE_WAITQUEUE(name, tsk) \ - wait_queue_t name = __WAITQUEUE_INITIALIZER(name, tsk) +#define DECLARE_WAITQUEUE(name, tsk) \ + struct wait_queue_entry name = __WAITQUEUE_INITIALIZER(name, tsk) -#define __WAIT_QUEUE_HEAD_INITIALIZER(name) { \ - .lock = __SPIN_LOCK_UNLOCKED(name.lock), \ - .task_list = { &(name).task_list, &(name).task_list } } +#define __WAIT_QUEUE_HEAD_INITIALIZER(name) { \ + .lock = __SPIN_LOCK_UNLOCKED(name.lock), \ + .head = { &(name).head, &(name).head } } #define DECLARE_WAIT_QUEUE_HEAD(name) \ - wait_queue_head_t name = __WAIT_QUEUE_HEAD_INITIALIZER(name) - -#define __WAIT_BIT_KEY_INITIALIZER(word, bit) \ - { .flags = word, .bit_nr = bit, } + struct wait_queue_head name = __WAIT_QUEUE_HEAD_INITIALIZER(name) -#define __WAIT_ATOMIC_T_KEY_INITIALIZER(p) \ - { .flags = p, .bit_nr = WAIT_ATOMIC_T_BIT_NR, } +extern void __init_waitqueue_head(struct wait_queue_head *wq_head, const char *name, struct lock_class_key *); -extern void __init_waitqueue_head(wait_queue_head_t *q, const char *name, struct lock_class_key *); - -#define init_waitqueue_head(q) \ - do { \ - static struct lock_class_key __key; \ - \ - __init_waitqueue_head((q), #q, &__key); \ +#define init_waitqueue_head(wq_head) \ + do { \ + static struct lock_class_key __key; \ + \ + __init_waitqueue_head((wq_head), #wq_head, &__key); \ } while (0) #ifdef CONFIG_LOCKDEP # define __WAIT_QUEUE_HEAD_INIT_ONSTACK(name) \ ({ init_waitqueue_head(&name); name; }) # define DECLARE_WAIT_QUEUE_HEAD_ONSTACK(name) \ - wait_queue_head_t name = __WAIT_QUEUE_HEAD_INIT_ONSTACK(name) + struct wait_queue_head name = __WAIT_QUEUE_HEAD_INIT_ONSTACK(name) #else # define DECLARE_WAIT_QUEUE_HEAD_ONSTACK(name) DECLARE_WAIT_QUEUE_HEAD(name) #endif -static inline void init_waitqueue_entry(wait_queue_t *q, struct task_struct *p) +static inline void init_waitqueue_entry(struct wait_queue_entry *wq_entry, struct task_struct *p) { - q->flags = 0; - q->private = p; - q->func = default_wake_function; + wq_entry->flags = 0; + wq_entry->private = p; + wq_entry->func = default_wake_function; } static inline void -init_waitqueue_func_entry(wait_queue_t *q, wait_queue_func_t func) +init_waitqueue_func_entry(struct wait_queue_entry *wq_entry, wait_queue_func_t func) { - q->flags = 0; - q->private = NULL; - q->func = func; + wq_entry->flags = 0; + wq_entry->private = NULL; + wq_entry->func = func; } /** * waitqueue_active -- locklessly test for waiters on the queue - * @q: the waitqueue to test for waiters + * @wq_head: the waitqueue to test for waiters * * returns true if the wait list is not empty * * NOTE: this function is lockless and requires care, incorrect usage _will_ * lead to sporadic and non-obvious failure. * - * Use either while holding wait_queue_head_t::lock or when used for wakeups + * Use either while holding wait_queue_head::lock or when used for wakeups * with an extra smp_mb() like: * * CPU0 - waker CPU1 - waiter * * for (;;) { - * @cond = true; prepare_to_wait(&wq, &wait, state); + * @cond = true; prepare_to_wait(&wq_head, &wait, state); * smp_mb(); // smp_mb() from set_current_state() - * if (waitqueue_active(wq)) if (@cond) - * wake_up(wq); break; + * if (waitqueue_active(wq_head)) if (@cond) + * wake_up(wq_head); break; * schedule(); * } - * finish_wait(&wq, &wait); + * finish_wait(&wq_head, &wait); * * Because without the explicit smp_mb() it's possible for the * waitqueue_active() load to get hoisted over the @cond store such that we'll @@ -133,20 +119,20 @@ init_waitqueue_func_entry(wait_queue_t *q, wait_queue_func_t func) * Also note that this 'optimization' trades a spin_lock() for an smp_mb(), * which (when the lock is uncontended) are of roughly equal cost. */ -static inline int waitqueue_active(wait_queue_head_t *q) +static inline int waitqueue_active(struct wait_queue_head *wq_head) { - return !list_empty(&q->task_list); + return !list_empty(&wq_head->head); } /** * wq_has_sleeper - check if there are any waiting processes - * @wq: wait queue head + * @wq_head: wait queue head * - * Returns true if wq has waiting processes + * Returns true if wq_head has waiting processes * * Please refer to the comment for waitqueue_active. */ -static inline bool wq_has_sleeper(wait_queue_head_t *wq) +static inline bool wq_has_sleeper(struct wait_queue_head *wq_head) { /* * We need to be sure we are in sync with the @@ -156,63 +142,51 @@ static inline bool wq_has_sleeper(wait_queue_head_t *wq) * waiting side. */ smp_mb(); - return waitqueue_active(wq); + return waitqueue_active(wq_head); } -extern void add_wait_queue(wait_queue_head_t *q, wait_queue_t *wait); -extern void add_wait_queue_exclusive(wait_queue_head_t *q, wait_queue_t *wait); -extern void remove_wait_queue(wait_queue_head_t *q, wait_queue_t *wait); +extern void add_wait_queue(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry); +extern void add_wait_queue_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry); +extern void remove_wait_queue(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry); -static inline void __add_wait_queue(wait_queue_head_t *head, wait_queue_t *new) +static inline void __add_wait_queue(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry) { - list_add(&new->task_list, &head->task_list); + list_add(&wq_entry->entry, &wq_head->head); } /* * Used for wake-one threads: */ static inline void -__add_wait_queue_exclusive(wait_queue_head_t *q, wait_queue_t *wait) +__add_wait_queue_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry) { - wait->flags |= WQ_FLAG_EXCLUSIVE; - __add_wait_queue(q, wait); + wq_entry->flags |= WQ_FLAG_EXCLUSIVE; + __add_wait_queue(wq_head, wq_entry); } -static inline void __add_wait_queue_tail(wait_queue_head_t *head, - wait_queue_t *new) +static inline void __add_wait_queue_entry_tail(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry) { - list_add_tail(&new->task_list, &head->task_list); + list_add_tail(&wq_entry->entry, &wq_head->head); } static inline void -__add_wait_queue_tail_exclusive(wait_queue_head_t *q, wait_queue_t *wait) +__add_wait_queue_entry_tail_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry) { - wait->flags |= WQ_FLAG_EXCLUSIVE; - __add_wait_queue_tail(q, wait); + wq_entry->flags |= WQ_FLAG_EXCLUSIVE; + __add_wait_queue_entry_tail(wq_head, wq_entry); } static inline void -__remove_wait_queue(wait_queue_head_t *head, wait_queue_t *old) +__remove_wait_queue(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry) { - list_del(&old->task_list); + list_del(&wq_entry->entry); } -typedef int wait_bit_action_f(struct wait_bit_key *, int mode); -void __wake_up(wait_queue_head_t *q, unsigned int mode, int nr, void *key); -void __wake_up_locked_key(wait_queue_head_t *q, unsigned int mode, void *key); -void __wake_up_sync_key(wait_queue_head_t *q, unsigned int mode, int nr, void *key); -void __wake_up_locked(wait_queue_head_t *q, unsigned int mode, int nr); -void __wake_up_sync(wait_queue_head_t *q, unsigned int mode, int nr); -void __wake_up_bit(wait_queue_head_t *, void *, int); -int __wait_on_bit(wait_queue_head_t *, struct wait_bit_queue *, wait_bit_action_f *, unsigned); -int __wait_on_bit_lock(wait_queue_head_t *, struct wait_bit_queue *, wait_bit_action_f *, unsigned); -void wake_up_bit(void *, int); -void wake_up_atomic_t(atomic_t *); -int out_of_line_wait_on_bit(void *, int, wait_bit_action_f *, unsigned); -int out_of_line_wait_on_bit_timeout(void *, int, wait_bit_action_f *, unsigned, unsigned long); -int out_of_line_wait_on_bit_lock(void *, int, wait_bit_action_f *, unsigned); -int out_of_line_wait_on_atomic_t(atomic_t *, int (*)(atomic_t *), unsigned); -wait_queue_head_t *bit_waitqueue(void *, int); +void __wake_up(struct wait_queue_head *wq_head, unsigned int mode, int nr, void *key); +void __wake_up_locked_key(struct wait_queue_head *wq_head, unsigned int mode, void *key); +void __wake_up_sync_key(struct wait_queue_head *wq_head, unsigned int mode, int nr, void *key); +void __wake_up_locked(struct wait_queue_head *wq_head, unsigned int mode, int nr); +void __wake_up_sync(struct wait_queue_head *wq_head, unsigned int mode, int nr); #define wake_up(x) __wake_up(x, TASK_NORMAL, 1, NULL) #define wake_up_nr(x, nr) __wake_up(x, TASK_NORMAL, nr, NULL) @@ -228,28 +202,28 @@ wait_queue_head_t *bit_waitqueue(void *, int); /* * Wakeup macros to be used to report events to the targets. */ -#define wake_up_poll(x, m) \ +#define wake_up_poll(x, m) \ __wake_up(x, TASK_NORMAL, 1, (void *) (m)) -#define wake_up_locked_poll(x, m) \ +#define wake_up_locked_poll(x, m) \ __wake_up_locked_key((x), TASK_NORMAL, (void *) (m)) -#define wake_up_interruptible_poll(x, m) \ +#define wake_up_interruptible_poll(x, m) \ __wake_up(x, TASK_INTERRUPTIBLE, 1, (void *) (m)) -#define wake_up_interruptible_sync_poll(x, m) \ +#define wake_up_interruptible_sync_poll(x, m) \ __wake_up_sync_key((x), TASK_INTERRUPTIBLE, 1, (void *) (m)) -#define ___wait_cond_timeout(condition) \ -({ \ - bool __cond = (condition); \ - if (__cond && !__ret) \ - __ret = 1; \ - __cond || !__ret; \ +#define ___wait_cond_timeout(condition) \ +({ \ + bool __cond = (condition); \ + if (__cond && !__ret) \ + __ret = 1; \ + __cond || !__ret; \ }) -#define ___wait_is_interruptible(state) \ - (!__builtin_constant_p(state) || \ - state == TASK_INTERRUPTIBLE || state == TASK_KILLABLE) \ +#define ___wait_is_interruptible(state) \ + (!__builtin_constant_p(state) || \ + state == TASK_INTERRUPTIBLE || state == TASK_KILLABLE) \ -extern void init_wait_entry(wait_queue_t *__wait, int flags); +extern void init_wait_entry(struct wait_queue_entry *wq_entry, int flags); /* * The below macro ___wait_event() has an explicit shadow of the __ret @@ -263,108 +237,108 @@ extern void init_wait_entry(wait_queue_t *__wait, int flags); * otherwise. */ -#define ___wait_event(wq, condition, state, exclusive, ret, cmd) \ -({ \ - __label__ __out; \ - wait_queue_t __wait; \ - long __ret = ret; /* explicit shadow */ \ - \ - init_wait_entry(&__wait, exclusive ? WQ_FLAG_EXCLUSIVE : 0); \ - for (;;) { \ - long __int = prepare_to_wait_event(&wq, &__wait, state);\ - \ - if (condition) \ - break; \ - \ - if (___wait_is_interruptible(state) && __int) { \ - __ret = __int; \ - goto __out; \ - } \ - \ - cmd; \ - } \ - finish_wait(&wq, &__wait); \ -__out: __ret; \ +#define ___wait_event(wq_head, condition, state, exclusive, ret, cmd) \ +({ \ + __label__ __out; \ + struct wait_queue_entry __wq_entry; \ + long __ret = ret; /* explicit shadow */ \ + \ + init_wait_entry(&__wq_entry, exclusive ? WQ_FLAG_EXCLUSIVE : 0); \ + for (;;) { \ + long __int = prepare_to_wait_event(&wq_head, &__wq_entry, state);\ + \ + if (condition) \ + break; \ + \ + if (___wait_is_interruptible(state) && __int) { \ + __ret = __int; \ + goto __out; \ + } \ + \ + cmd; \ + } \ + finish_wait(&wq_head, &__wq_entry); \ +__out: __ret; \ }) -#define __wait_event(wq, condition) \ - (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 0, 0, \ +#define __wait_event(wq_head, condition) \ + (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 0, 0, \ schedule()) /** * wait_event - sleep until a condition gets true - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the * @condition evaluates to true. The @condition is checked each time - * the waitqueue @wq is woken up. + * the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. */ -#define wait_event(wq, condition) \ -do { \ - might_sleep(); \ - if (condition) \ - break; \ - __wait_event(wq, condition); \ +#define wait_event(wq_head, condition) \ +do { \ + might_sleep(); \ + if (condition) \ + break; \ + __wait_event(wq_head, condition); \ } while (0) -#define __io_wait_event(wq, condition) \ - (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 0, 0, \ +#define __io_wait_event(wq_head, condition) \ + (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 0, 0, \ io_schedule()) /* * io_wait_event() -- like wait_event() but with io_schedule() */ -#define io_wait_event(wq, condition) \ -do { \ - might_sleep(); \ - if (condition) \ - break; \ - __io_wait_event(wq, condition); \ +#define io_wait_event(wq_head, condition) \ +do { \ + might_sleep(); \ + if (condition) \ + break; \ + __io_wait_event(wq_head, condition); \ } while (0) -#define __wait_event_freezable(wq, condition) \ - ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, 0, \ +#define __wait_event_freezable(wq_head, condition) \ + ___wait_event(wq_head, condition, TASK_INTERRUPTIBLE, 0, 0, \ schedule(); try_to_freeze()) /** * wait_event_freezable - sleep (or freeze) until a condition gets true - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * * The process is put to sleep (TASK_INTERRUPTIBLE -- so as not to contribute * to system load) until the @condition evaluates to true. The - * @condition is checked each time the waitqueue @wq is woken up. + * @condition is checked each time the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. */ -#define wait_event_freezable(wq, condition) \ -({ \ - int __ret = 0; \ - might_sleep(); \ - if (!(condition)) \ - __ret = __wait_event_freezable(wq, condition); \ - __ret; \ +#define wait_event_freezable(wq_head, condition) \ +({ \ + int __ret = 0; \ + might_sleep(); \ + if (!(condition)) \ + __ret = __wait_event_freezable(wq_head, condition); \ + __ret; \ }) -#define __wait_event_timeout(wq, condition, timeout) \ - ___wait_event(wq, ___wait_cond_timeout(condition), \ - TASK_UNINTERRUPTIBLE, 0, timeout, \ +#define __wait_event_timeout(wq_head, condition, timeout) \ + ___wait_event(wq_head, ___wait_cond_timeout(condition), \ + TASK_UNINTERRUPTIBLE, 0, timeout, \ __ret = schedule_timeout(__ret)) /** * wait_event_timeout - sleep until a condition gets true or a timeout elapses - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @timeout: timeout, in jiffies * * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the * @condition evaluates to true. The @condition is checked each time - * the waitqueue @wq is woken up. + * the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -375,83 +349,83 @@ do { \ * or the remaining jiffies (at least 1) if the @condition evaluated * to %true before the @timeout elapsed. */ -#define wait_event_timeout(wq, condition, timeout) \ -({ \ - long __ret = timeout; \ - might_sleep(); \ - if (!___wait_cond_timeout(condition)) \ - __ret = __wait_event_timeout(wq, condition, timeout); \ - __ret; \ +#define wait_event_timeout(wq_head, condition, timeout) \ +({ \ + long __ret = timeout; \ + might_sleep(); \ + if (!___wait_cond_timeout(condition)) \ + __ret = __wait_event_timeout(wq_head, condition, timeout); \ + __ret; \ }) -#define __wait_event_freezable_timeout(wq, condition, timeout) \ - ___wait_event(wq, ___wait_cond_timeout(condition), \ - TASK_INTERRUPTIBLE, 0, timeout, \ +#define __wait_event_freezable_timeout(wq_head, condition, timeout) \ + ___wait_event(wq_head, ___wait_cond_timeout(condition), \ + TASK_INTERRUPTIBLE, 0, timeout, \ __ret = schedule_timeout(__ret); try_to_freeze()) /* * like wait_event_timeout() -- except it uses TASK_INTERRUPTIBLE to avoid * increasing load and is freezable. */ -#define wait_event_freezable_timeout(wq, condition, timeout) \ -({ \ - long __ret = timeout; \ - might_sleep(); \ - if (!___wait_cond_timeout(condition)) \ - __ret = __wait_event_freezable_timeout(wq, condition, timeout); \ - __ret; \ +#define wait_event_freezable_timeout(wq_head, condition, timeout) \ +({ \ + long __ret = timeout; \ + might_sleep(); \ + if (!___wait_cond_timeout(condition)) \ + __ret = __wait_event_freezable_timeout(wq_head, condition, timeout); \ + __ret; \ }) -#define __wait_event_exclusive_cmd(wq, condition, cmd1, cmd2) \ - (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 1, 0, \ +#define __wait_event_exclusive_cmd(wq_head, condition, cmd1, cmd2) \ + (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 1, 0, \ cmd1; schedule(); cmd2) /* * Just like wait_event_cmd(), except it sets exclusive flag */ -#define wait_event_exclusive_cmd(wq, condition, cmd1, cmd2) \ -do { \ - if (condition) \ - break; \ - __wait_event_exclusive_cmd(wq, condition, cmd1, cmd2); \ +#define wait_event_exclusive_cmd(wq_head, condition, cmd1, cmd2) \ +do { \ + if (condition) \ + break; \ + __wait_event_exclusive_cmd(wq_head, condition, cmd1, cmd2); \ } while (0) -#define __wait_event_cmd(wq, condition, cmd1, cmd2) \ - (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 0, 0, \ +#define __wait_event_cmd(wq_head, condition, cmd1, cmd2) \ + (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 0, 0, \ cmd1; schedule(); cmd2) /** * wait_event_cmd - sleep until a condition gets true - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @cmd1: the command will be executed before sleep * @cmd2: the command will be executed after sleep * * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the * @condition evaluates to true. The @condition is checked each time - * the waitqueue @wq is woken up. + * the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. */ -#define wait_event_cmd(wq, condition, cmd1, cmd2) \ -do { \ - if (condition) \ - break; \ - __wait_event_cmd(wq, condition, cmd1, cmd2); \ +#define wait_event_cmd(wq_head, condition, cmd1, cmd2) \ +do { \ + if (condition) \ + break; \ + __wait_event_cmd(wq_head, condition, cmd1, cmd2); \ } while (0) -#define __wait_event_interruptible(wq, condition) \ - ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, 0, \ +#define __wait_event_interruptible(wq_head, condition) \ + ___wait_event(wq_head, condition, TASK_INTERRUPTIBLE, 0, 0, \ schedule()) /** * wait_event_interruptible - sleep until a condition gets true - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * * The process is put to sleep (TASK_INTERRUPTIBLE) until the * @condition evaluates to true or a signal is received. - * The @condition is checked each time the waitqueue @wq is woken up. + * The @condition is checked each time the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -459,29 +433,29 @@ do { \ * The function will return -ERESTARTSYS if it was interrupted by a * signal and 0 if @condition evaluated to true. */ -#define wait_event_interruptible(wq, condition) \ -({ \ - int __ret = 0; \ - might_sleep(); \ - if (!(condition)) \ - __ret = __wait_event_interruptible(wq, condition); \ - __ret; \ +#define wait_event_interruptible(wq_head, condition) \ +({ \ + int __ret = 0; \ + might_sleep(); \ + if (!(condition)) \ + __ret = __wait_event_interruptible(wq_head, condition); \ + __ret; \ }) -#define __wait_event_interruptible_timeout(wq, condition, timeout) \ - ___wait_event(wq, ___wait_cond_timeout(condition), \ - TASK_INTERRUPTIBLE, 0, timeout, \ +#define __wait_event_interruptible_timeout(wq_head, condition, timeout) \ + ___wait_event(wq_head, ___wait_cond_timeout(condition), \ + TASK_INTERRUPTIBLE, 0, timeout, \ __ret = schedule_timeout(__ret)) /** * wait_event_interruptible_timeout - sleep until a condition gets true or a timeout elapses - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @timeout: timeout, in jiffies * * The process is put to sleep (TASK_INTERRUPTIBLE) until the * @condition evaluates to true or a signal is received. - * The @condition is checked each time the waitqueue @wq is woken up. + * The @condition is checked each time the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -493,50 +467,49 @@ do { \ * to %true before the @timeout elapsed, or -%ERESTARTSYS if it was * interrupted by a signal. */ -#define wait_event_interruptible_timeout(wq, condition, timeout) \ -({ \ - long __ret = timeout; \ - might_sleep(); \ - if (!___wait_cond_timeout(condition)) \ - __ret = __wait_event_interruptible_timeout(wq, \ - condition, timeout); \ - __ret; \ +#define wait_event_interruptible_timeout(wq_head, condition, timeout) \ +({ \ + long __ret = timeout; \ + might_sleep(); \ + if (!___wait_cond_timeout(condition)) \ + __ret = __wait_event_interruptible_timeout(wq_head, \ + condition, timeout); \ + __ret; \ }) -#define __wait_event_hrtimeout(wq, condition, timeout, state) \ -({ \ - int __ret = 0; \ - struct hrtimer_sleeper __t; \ - \ - hrtimer_init_on_stack(&__t.timer, CLOCK_MONOTONIC, \ - HRTIMER_MODE_REL); \ - hrtimer_init_sleeper(&__t, current); \ - if ((timeout) != KTIME_MAX) \ - hrtimer_start_range_ns(&__t.timer, timeout, \ - current->timer_slack_ns, \ - HRTIMER_MODE_REL); \ - \ - __ret = ___wait_event(wq, condition, state, 0, 0, \ - if (!__t.task) { \ - __ret = -ETIME; \ - break; \ - } \ - schedule()); \ - \ - hrtimer_cancel(&__t.timer); \ - destroy_hrtimer_on_stack(&__t.timer); \ - __ret; \ +#define __wait_event_hrtimeout(wq_head, condition, timeout, state) \ +({ \ + int __ret = 0; \ + struct hrtimer_sleeper __t; \ + \ + hrtimer_init_on_stack(&__t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); \ + hrtimer_init_sleeper(&__t, current); \ + if ((timeout) != KTIME_MAX) \ + hrtimer_start_range_ns(&__t.timer, timeout, \ + current->timer_slack_ns, \ + HRTIMER_MODE_REL); \ + \ + __ret = ___wait_event(wq_head, condition, state, 0, 0, \ + if (!__t.task) { \ + __ret = -ETIME; \ + break; \ + } \ + schedule()); \ + \ + hrtimer_cancel(&__t.timer); \ + destroy_hrtimer_on_stack(&__t.timer); \ + __ret; \ }) /** * wait_event_hrtimeout - sleep until a condition gets true or a timeout elapses - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @timeout: timeout, as a ktime_t * * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the * @condition evaluates to true or a signal is received. - * The @condition is checked each time the waitqueue @wq is woken up. + * The @condition is checked each time the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -544,25 +517,25 @@ do { \ * The function returns 0 if @condition became true, or -ETIME if the timeout * elapsed. */ -#define wait_event_hrtimeout(wq, condition, timeout) \ -({ \ - int __ret = 0; \ - might_sleep(); \ - if (!(condition)) \ - __ret = __wait_event_hrtimeout(wq, condition, timeout, \ - TASK_UNINTERRUPTIBLE); \ - __ret; \ +#define wait_event_hrtimeout(wq_head, condition, timeout) \ +({ \ + int __ret = 0; \ + might_sleep(); \ + if (!(condition)) \ + __ret = __wait_event_hrtimeout(wq_head, condition, timeout, \ + TASK_UNINTERRUPTIBLE); \ + __ret; \ }) /** * wait_event_interruptible_hrtimeout - sleep until a condition gets true or a timeout elapses - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @timeout: timeout, as a ktime_t * * The process is put to sleep (TASK_INTERRUPTIBLE) until the * @condition evaluates to true or a signal is received. - * The @condition is checked each time the waitqueue @wq is woken up. + * The @condition is checked each time the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -570,73 +543,73 @@ do { \ * The function returns 0 if @condition became true, -ERESTARTSYS if it was * interrupted by a signal, or -ETIME if the timeout elapsed. */ -#define wait_event_interruptible_hrtimeout(wq, condition, timeout) \ -({ \ - long __ret = 0; \ - might_sleep(); \ - if (!(condition)) \ - __ret = __wait_event_hrtimeout(wq, condition, timeout, \ - TASK_INTERRUPTIBLE); \ - __ret; \ +#define wait_event_interruptible_hrtimeout(wq, condition, timeout) \ +({ \ + long __ret = 0; \ + might_sleep(); \ + if (!(condition)) \ + __ret = __wait_event_hrtimeout(wq, condition, timeout, \ + TASK_INTERRUPTIBLE); \ + __ret; \ }) -#define __wait_event_interruptible_exclusive(wq, condition) \ - ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 1, 0, \ +#define __wait_event_interruptible_exclusive(wq, condition) \ + ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 1, 0, \ schedule()) -#define wait_event_interruptible_exclusive(wq, condition) \ -({ \ - int __ret = 0; \ - might_sleep(); \ - if (!(condition)) \ - __ret = __wait_event_interruptible_exclusive(wq, condition);\ - __ret; \ +#define wait_event_interruptible_exclusive(wq, condition) \ +({ \ + int __ret = 0; \ + might_sleep(); \ + if (!(condition)) \ + __ret = __wait_event_interruptible_exclusive(wq, condition); \ + __ret; \ }) -#define __wait_event_killable_exclusive(wq, condition) \ - ___wait_event(wq, condition, TASK_KILLABLE, 1, 0, \ +#define __wait_event_killable_exclusive(wq, condition) \ + ___wait_event(wq, condition, TASK_KILLABLE, 1, 0, \ schedule()) -#define wait_event_killable_exclusive(wq, condition) \ -({ \ - int __ret = 0; \ - might_sleep(); \ - if (!(condition)) \ - __ret = __wait_event_killable_exclusive(wq, condition); \ - __ret; \ +#define wait_event_killable_exclusive(wq, condition) \ +({ \ + int __ret = 0; \ + might_sleep(); \ + if (!(condition)) \ + __ret = __wait_event_killable_exclusive(wq, condition); \ + __ret; \ }) -#define __wait_event_freezable_exclusive(wq, condition) \ - ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 1, 0, \ +#define __wait_event_freezable_exclusive(wq, condition) \ + ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 1, 0, \ schedule(); try_to_freeze()) -#define wait_event_freezable_exclusive(wq, condition) \ -({ \ - int __ret = 0; \ - might_sleep(); \ - if (!(condition)) \ - __ret = __wait_event_freezable_exclusive(wq, condition);\ - __ret; \ +#define wait_event_freezable_exclusive(wq, condition) \ +({ \ + int __ret = 0; \ + might_sleep(); \ + if (!(condition)) \ + __ret = __wait_event_freezable_exclusive(wq, condition); \ + __ret; \ }) -extern int do_wait_intr(wait_queue_head_t *, wait_queue_t *); -extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_t *); - -#define __wait_event_interruptible_locked(wq, condition, exclusive, fn) \ -({ \ - int __ret; \ - DEFINE_WAIT(__wait); \ - if (exclusive) \ - __wait.flags |= WQ_FLAG_EXCLUSIVE; \ - do { \ - __ret = fn(&(wq), &__wait); \ - if (__ret) \ - break; \ - } while (!(condition)); \ - __remove_wait_queue(&(wq), &__wait); \ - __set_current_state(TASK_RUNNING); \ - __ret; \ +extern int do_wait_intr(wait_queue_head_t *, wait_queue_entry_t *); +extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *); + +#define __wait_event_interruptible_locked(wq, condition, exclusive, fn) \ +({ \ + int __ret; \ + DEFINE_WAIT(__wait); \ + if (exclusive) \ + __wait.flags |= WQ_FLAG_EXCLUSIVE; \ + do { \ + __ret = fn(&(wq), &__wait); \ + if (__ret) \ + break; \ + } while (!(condition)); \ + __remove_wait_queue(&(wq), &__wait); \ + __set_current_state(TASK_RUNNING); \ + __ret; \ }) @@ -663,8 +636,8 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_t *); * The function will return -ERESTARTSYS if it was interrupted by a * signal and 0 if @condition evaluated to true. */ -#define wait_event_interruptible_locked(wq, condition) \ - ((condition) \ +#define wait_event_interruptible_locked(wq, condition) \ + ((condition) \ ? 0 : __wait_event_interruptible_locked(wq, condition, 0, do_wait_intr)) /** @@ -690,8 +663,8 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_t *); * The function will return -ERESTARTSYS if it was interrupted by a * signal and 0 if @condition evaluated to true. */ -#define wait_event_interruptible_locked_irq(wq, condition) \ - ((condition) \ +#define wait_event_interruptible_locked_irq(wq, condition) \ + ((condition) \ ? 0 : __wait_event_interruptible_locked(wq, condition, 0, do_wait_intr_irq)) /** @@ -721,8 +694,8 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_t *); * The function will return -ERESTARTSYS if it was interrupted by a * signal and 0 if @condition evaluated to true. */ -#define wait_event_interruptible_exclusive_locked(wq, condition) \ - ((condition) \ +#define wait_event_interruptible_exclusive_locked(wq, condition) \ + ((condition) \ ? 0 : __wait_event_interruptible_locked(wq, condition, 1, do_wait_intr)) /** @@ -752,12 +725,12 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_t *); * The function will return -ERESTARTSYS if it was interrupted by a * signal and 0 if @condition evaluated to true. */ -#define wait_event_interruptible_exclusive_locked_irq(wq, condition) \ - ((condition) \ +#define wait_event_interruptible_exclusive_locked_irq(wq, condition) \ + ((condition) \ ? 0 : __wait_event_interruptible_locked(wq, condition, 1, do_wait_intr_irq)) -#define __wait_event_killable(wq, condition) \ +#define __wait_event_killable(wq, condition) \ ___wait_event(wq, condition, TASK_KILLABLE, 0, 0, schedule()) /** @@ -775,21 +748,21 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_t *); * The function will return -ERESTARTSYS if it was interrupted by a * signal and 0 if @condition evaluated to true. */ -#define wait_event_killable(wq, condition) \ -({ \ - int __ret = 0; \ - might_sleep(); \ - if (!(condition)) \ - __ret = __wait_event_killable(wq, condition); \ - __ret; \ +#define wait_event_killable(wq_head, condition) \ +({ \ + int __ret = 0; \ + might_sleep(); \ + if (!(condition)) \ + __ret = __wait_event_killable(wq_head, condition); \ + __ret; \ }) -#define __wait_event_lock_irq(wq, condition, lock, cmd) \ - (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 0, 0, \ - spin_unlock_irq(&lock); \ - cmd; \ - schedule(); \ +#define __wait_event_lock_irq(wq_head, condition, lock, cmd) \ + (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 0, 0, \ + spin_unlock_irq(&lock); \ + cmd; \ + schedule(); \ spin_lock_irq(&lock)) /** @@ -797,7 +770,7 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_t *); * condition is checked under the lock. This * is expected to be called with the lock * taken. - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @lock: a locked spinlock_t, which will be released before cmd * and schedule() and reacquired afterwards. @@ -806,7 +779,7 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_t *); * * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the * @condition evaluates to true. The @condition is checked each time - * the waitqueue @wq is woken up. + * the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -815,11 +788,11 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_t *); * dropped before invoking the cmd and going to sleep and is reacquired * afterwards. */ -#define wait_event_lock_irq_cmd(wq, condition, lock, cmd) \ -do { \ - if (condition) \ - break; \ - __wait_event_lock_irq(wq, condition, lock, cmd); \ +#define wait_event_lock_irq_cmd(wq_head, condition, lock, cmd) \ +do { \ + if (condition) \ + break; \ + __wait_event_lock_irq(wq_head, condition, lock, cmd); \ } while (0) /** @@ -827,14 +800,14 @@ do { \ * condition is checked under the lock. This * is expected to be called with the lock * taken. - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @lock: a locked spinlock_t, which will be released before schedule() * and reacquired afterwards. * * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the * @condition evaluates to true. The @condition is checked each time - * the waitqueue @wq is woken up. + * the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -842,26 +815,26 @@ do { \ * This is supposed to be called while holding the lock. The lock is * dropped before going to sleep and is reacquired afterwards. */ -#define wait_event_lock_irq(wq, condition, lock) \ -do { \ - if (condition) \ - break; \ - __wait_event_lock_irq(wq, condition, lock, ); \ +#define wait_event_lock_irq(wq_head, condition, lock) \ +do { \ + if (condition) \ + break; \ + __wait_event_lock_irq(wq_head, condition, lock, ); \ } while (0) -#define __wait_event_interruptible_lock_irq(wq, condition, lock, cmd) \ - ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, 0, \ - spin_unlock_irq(&lock); \ - cmd; \ - schedule(); \ +#define __wait_event_interruptible_lock_irq(wq_head, condition, lock, cmd) \ + ___wait_event(wq_head, condition, TASK_INTERRUPTIBLE, 0, 0, \ + spin_unlock_irq(&lock); \ + cmd; \ + schedule(); \ spin_lock_irq(&lock)) /** * wait_event_interruptible_lock_irq_cmd - sleep until a condition gets true. * The condition is checked under the lock. This is expected to * be called with the lock taken. - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @lock: a locked spinlock_t, which will be released before cmd and * schedule() and reacquired afterwards. @@ -870,7 +843,7 @@ do { \ * * The process is put to sleep (TASK_INTERRUPTIBLE) until the * @condition evaluates to true or a signal is received. The @condition is - * checked each time the waitqueue @wq is woken up. + * checked each time the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -882,27 +855,27 @@ do { \ * The macro will return -ERESTARTSYS if it was interrupted by a signal * and 0 if @condition evaluated to true. */ -#define wait_event_interruptible_lock_irq_cmd(wq, condition, lock, cmd) \ -({ \ - int __ret = 0; \ - if (!(condition)) \ - __ret = __wait_event_interruptible_lock_irq(wq, \ - condition, lock, cmd); \ - __ret; \ +#define wait_event_interruptible_lock_irq_cmd(wq_head, condition, lock, cmd) \ +({ \ + int __ret = 0; \ + if (!(condition)) \ + __ret = __wait_event_interruptible_lock_irq(wq_head, \ + condition, lock, cmd); \ + __ret; \ }) /** * wait_event_interruptible_lock_irq - sleep until a condition gets true. * The condition is checked under the lock. This is expected * to be called with the lock taken. - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @lock: a locked spinlock_t, which will be released before schedule() * and reacquired afterwards. * * The process is put to sleep (TASK_INTERRUPTIBLE) until the * @condition evaluates to true or signal is received. The @condition is - * checked each time the waitqueue @wq is woken up. + * checked each time the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -913,28 +886,28 @@ do { \ * The macro will return -ERESTARTSYS if it was interrupted by a signal * and 0 if @condition evaluated to true. */ -#define wait_event_interruptible_lock_irq(wq, condition, lock) \ -({ \ - int __ret = 0; \ - if (!(condition)) \ - __ret = __wait_event_interruptible_lock_irq(wq, \ - condition, lock,); \ - __ret; \ +#define wait_event_interruptible_lock_irq(wq_head, condition, lock) \ +({ \ + int __ret = 0; \ + if (!(condition)) \ + __ret = __wait_event_interruptible_lock_irq(wq_head, \ + condition, lock,); \ + __ret; \ }) -#define __wait_event_interruptible_lock_irq_timeout(wq, condition, \ - lock, timeout) \ - ___wait_event(wq, ___wait_cond_timeout(condition), \ - TASK_INTERRUPTIBLE, 0, timeout, \ - spin_unlock_irq(&lock); \ - __ret = schedule_timeout(__ret); \ +#define __wait_event_interruptible_lock_irq_timeout(wq_head, condition, \ + lock, timeout) \ + ___wait_event(wq_head, ___wait_cond_timeout(condition), \ + TASK_INTERRUPTIBLE, 0, timeout, \ + spin_unlock_irq(&lock); \ + __ret = schedule_timeout(__ret); \ spin_lock_irq(&lock)); /** * wait_event_interruptible_lock_irq_timeout - sleep until a condition gets * true or a timeout elapses. The condition is checked under * the lock. This is expected to be called with the lock taken. - * @wq: the waitqueue to wait on + * @wq_head: the waitqueue to wait on * @condition: a C expression for the event to wait for * @lock: a locked spinlock_t, which will be released before schedule() * and reacquired afterwards. @@ -942,7 +915,7 @@ do { \ * * The process is put to sleep (TASK_INTERRUPTIBLE) until the * @condition evaluates to true or signal is received. The @condition is - * checked each time the waitqueue @wq is woken up. + * checked each time the waitqueue @wq_head is woken up. * * wake_up() has to be called after changing any variable that could * change the result of the wait condition. @@ -954,263 +927,42 @@ do { \ * was interrupted by a signal, and the remaining jiffies otherwise * if the condition evaluated to true before the timeout elapsed. */ -#define wait_event_interruptible_lock_irq_timeout(wq, condition, lock, \ - timeout) \ -({ \ - long __ret = timeout; \ - if (!___wait_cond_timeout(condition)) \ - __ret = __wait_event_interruptible_lock_irq_timeout( \ - wq, condition, lock, timeout); \ - __ret; \ +#define wait_event_interruptible_lock_irq_timeout(wq_head, condition, lock, \ + timeout) \ +({ \ + long __ret = timeout; \ + if (!___wait_cond_timeout(condition)) \ + __ret = __wait_event_interruptible_lock_irq_timeout( \ + wq_head, condition, lock, timeout); \ + __ret; \ }) /* * Waitqueues which are removed from the waitqueue_head at wakeup time */ -void prepare_to_wait(wait_queue_head_t *q, wait_queue_t *wait, int state); -void prepare_to_wait_exclusive(wait_queue_head_t *q, wait_queue_t *wait, int state); -long prepare_to_wait_event(wait_queue_head_t *q, wait_queue_t *wait, int state); -void finish_wait(wait_queue_head_t *q, wait_queue_t *wait); -long wait_woken(wait_queue_t *wait, unsigned mode, long timeout); -int woken_wake_function(wait_queue_t *wait, unsigned mode, int sync, void *key); -int autoremove_wake_function(wait_queue_t *wait, unsigned mode, int sync, void *key); -int wake_bit_function(wait_queue_t *wait, unsigned mode, int sync, void *key); - -#define DEFINE_WAIT_FUNC(name, function) \ - wait_queue_t name = { \ - .private = current, \ - .func = function, \ - .task_list = LIST_HEAD_INIT((name).task_list), \ +void prepare_to_wait(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state); +void prepare_to_wait_exclusive(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state); +long prepare_to_wait_event(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry, int state); +void finish_wait(struct wait_queue_head *wq_head, struct wait_queue_entry *wq_entry); +long wait_woken(struct wait_queue_entry *wq_entry, unsigned mode, long timeout); +int woken_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, int sync, void *key); +int autoremove_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, int sync, void *key); + +#define DEFINE_WAIT_FUNC(name, function) \ + struct wait_queue_entry name = { \ + .private = current, \ + .func = function, \ + .entry = LIST_HEAD_INIT((name).entry), \ } #define DEFINE_WAIT(name) DEFINE_WAIT_FUNC(name, autoremove_wake_function) -#define DEFINE_WAIT_BIT(name, word, bit) \ - struct wait_bit_queue name = { \ - .key = __WAIT_BIT_KEY_INITIALIZER(word, bit), \ - .wait = { \ - .private = current, \ - .func = wake_bit_function, \ - .task_list = \ - LIST_HEAD_INIT((name).wait.task_list), \ - }, \ - } - -#define init_wait(wait) \ - do { \ - (wait)->private = current; \ - (wait)->func = autoremove_wake_function; \ - INIT_LIST_HEAD(&(wait)->task_list); \ - (wait)->flags = 0; \ +#define init_wait(wait) \ + do { \ + (wait)->private = current; \ + (wait)->func = autoremove_wake_function; \ + INIT_LIST_HEAD(&(wait)->entry); \ + (wait)->flags = 0; \ } while (0) - -extern int bit_wait(struct wait_bit_key *, int); -extern int bit_wait_io(struct wait_bit_key *, int); -extern int bit_wait_timeout(struct wait_bit_key *, int); -extern int bit_wait_io_timeout(struct wait_bit_key *, int); - -/** - * wait_on_bit - wait for a bit to be cleared - * @word: the word being waited on, a kernel virtual address - * @bit: the bit of the word being waited on - * @mode: the task state to sleep in - * - * There is a standard hashed waitqueue table for generic use. This - * is the part of the hashtable's accessor API that waits on a bit. - * For instance, if one were to have waiters on a bitflag, one would - * call wait_on_bit() in threads waiting for the bit to clear. - * One uses wait_on_bit() where one is waiting for the bit to clear, - * but has no intention of setting it. - * Returned value will be zero if the bit was cleared, or non-zero - * if the process received a signal and the mode permitted wakeup - * on that signal. - */ -static inline int -wait_on_bit(unsigned long *word, int bit, unsigned mode) -{ - might_sleep(); - if (!test_bit(bit, word)) - return 0; - return out_of_line_wait_on_bit(word, bit, - bit_wait, - mode); -} - -/** - * wait_on_bit_io - wait for a bit to be cleared - * @word: the word being waited on, a kernel virtual address - * @bit: the bit of the word being waited on - * @mode: the task state to sleep in - * - * Use the standard hashed waitqueue table to wait for a bit - * to be cleared. This is similar to wait_on_bit(), but calls - * io_schedule() instead of schedule() for the actual waiting. - * - * Returned value will be zero if the bit was cleared, or non-zero - * if the process received a signal and the mode permitted wakeup - * on that signal. - */ -static inline int -wait_on_bit_io(unsigned long *word, int bit, unsigned mode) -{ - might_sleep(); - if (!test_bit(bit, word)) - return 0; - return out_of_line_wait_on_bit(word, bit, - bit_wait_io, - mode); -} - -/** - * wait_on_bit_timeout - wait for a bit to be cleared or a timeout elapses - * @word: the word being waited on, a kernel virtual address - * @bit: the bit of the word being waited on - * @mode: the task state to sleep in - * @timeout: timeout, in jiffies - * - * Use the standard hashed waitqueue table to wait for a bit - * to be cleared. This is similar to wait_on_bit(), except also takes a - * timeout parameter. - * - * Returned value will be zero if the bit was cleared before the - * @timeout elapsed, or non-zero if the @timeout elapsed or process - * received a signal and the mode permitted wakeup on that signal. - */ -static inline int -wait_on_bit_timeout(unsigned long *word, int bit, unsigned mode, - unsigned long timeout) -{ - might_sleep(); - if (!test_bit(bit, word)) - return 0; - return out_of_line_wait_on_bit_timeout(word, bit, - bit_wait_timeout, - mode, timeout); -} - -/** - * wait_on_bit_action - wait for a bit to be cleared - * @word: the word being waited on, a kernel virtual address - * @bit: the bit of the word being waited on - * @action: the function used to sleep, which may take special actions - * @mode: the task state to sleep in - * - * Use the standard hashed waitqueue table to wait for a bit - * to be cleared, and allow the waiting action to be specified. - * This is like wait_on_bit() but allows fine control of how the waiting - * is done. - * - * Returned value will be zero if the bit was cleared, or non-zero - * if the process received a signal and the mode permitted wakeup - * on that signal. - */ -static inline int -wait_on_bit_action(unsigned long *word, int bit, wait_bit_action_f *action, - unsigned mode) -{ - might_sleep(); - if (!test_bit(bit, word)) - return 0; - return out_of_line_wait_on_bit(word, bit, action, mode); -} - -/** - * wait_on_bit_lock - wait for a bit to be cleared, when wanting to set it - * @word: the word being waited on, a kernel virtual address - * @bit: the bit of the word being waited on - * @mode: the task state to sleep in - * - * There is a standard hashed waitqueue table for generic use. This - * is the part of the hashtable's accessor API that waits on a bit - * when one intends to set it, for instance, trying to lock bitflags. - * For instance, if one were to have waiters trying to set bitflag - * and waiting for it to clear before setting it, one would call - * wait_on_bit() in threads waiting to be able to set the bit. - * One uses wait_on_bit_lock() where one is waiting for the bit to - * clear with the intention of setting it, and when done, clearing it. - * - * Returns zero if the bit was (eventually) found to be clear and was - * set. Returns non-zero if a signal was delivered to the process and - * the @mode allows that signal to wake the process. - */ -static inline int -wait_on_bit_lock(unsigned long *word, int bit, unsigned mode) -{ - might_sleep(); - if (!test_and_set_bit(bit, word)) - return 0; - return out_of_line_wait_on_bit_lock(word, bit, bit_wait, mode); -} - -/** - * wait_on_bit_lock_io - wait for a bit to be cleared, when wanting to set it - * @word: the word being waited on, a kernel virtual address - * @bit: the bit of the word being waited on - * @mode: the task state to sleep in - * - * Use the standard hashed waitqueue table to wait for a bit - * to be cleared and then to atomically set it. This is similar - * to wait_on_bit(), but calls io_schedule() instead of schedule() - * for the actual waiting. - * - * Returns zero if the bit was (eventually) found to be clear and was - * set. Returns non-zero if a signal was delivered to the process and - * the @mode allows that signal to wake the process. - */ -static inline int -wait_on_bit_lock_io(unsigned long *word, int bit, unsigned mode) -{ - might_sleep(); - if (!test_and_set_bit(bit, word)) - return 0; - return out_of_line_wait_on_bit_lock(word, bit, bit_wait_io, mode); -} - -/** - * wait_on_bit_lock_action - wait for a bit to be cleared, when wanting to set it - * @word: the word being waited on, a kernel virtual address - * @bit: the bit of the word being waited on - * @action: the function used to sleep, which may take special actions - * @mode: the task state to sleep in - * - * Use the standard hashed waitqueue table to wait for a bit - * to be cleared and then to set it, and allow the waiting action - * to be specified. - * This is like wait_on_bit() but allows fine control of how the waiting - * is done. - * - * Returns zero if the bit was (eventually) found to be clear and was - * set. Returns non-zero if a signal was delivered to the process and - * the @mode allows that signal to wake the process. - */ -static inline int -wait_on_bit_lock_action(unsigned long *word, int bit, wait_bit_action_f *action, - unsigned mode) -{ - might_sleep(); - if (!test_and_set_bit(bit, word)) - return 0; - return out_of_line_wait_on_bit_lock(word, bit, action, mode); -} - -/** - * wait_on_atomic_t - Wait for an atomic_t to become 0 - * @val: The atomic value being waited on, a kernel virtual address - * @action: the function used to sleep, which may take special actions - * @mode: the task state to sleep in - * - * Wait for an atomic_t to become 0. We abuse the bit-wait waitqueue table for - * the purpose of getting a waitqueue, but we set the key to a bit number - * outside of the target 'word'. - */ -static inline -int wait_on_atomic_t(atomic_t *val, int (*action)(atomic_t *), unsigned mode) -{ - might_sleep(); - if (atomic_read(val) == 0) - return 0; - return out_of_line_wait_on_atomic_t(val, action, mode); -} - #endif /* _LINUX_WAIT_H */ diff --git a/include/linux/wait_bit.h b/include/linux/wait_bit.h new file mode 100644 index 000000000000..12b26660d7e9 --- /dev/null +++ b/include/linux/wait_bit.h @@ -0,0 +1,261 @@ +#ifndef _LINUX_WAIT_BIT_H +#define _LINUX_WAIT_BIT_H + +/* + * Linux wait-bit related types and methods: + */ +#include <linux/wait.h> + +struct wait_bit_key { + void *flags; + int bit_nr; +#define WAIT_ATOMIC_T_BIT_NR -1 + unsigned long timeout; +}; + +struct wait_bit_queue_entry { + struct wait_bit_key key; + struct wait_queue_entry wq_entry; +}; + +#define __WAIT_BIT_KEY_INITIALIZER(word, bit) \ + { .flags = word, .bit_nr = bit, } + +#define __WAIT_ATOMIC_T_KEY_INITIALIZER(p) \ + { .flags = p, .bit_nr = WAIT_ATOMIC_T_BIT_NR, } + +typedef int wait_bit_action_f(struct wait_bit_key *key, int mode); +void __wake_up_bit(struct wait_queue_head *wq_head, void *word, int bit); +int __wait_on_bit(struct wait_queue_head *wq_head, struct wait_bit_queue_entry *wbq_entry, wait_bit_action_f *action, unsigned int mode); +int __wait_on_bit_lock(struct wait_queue_head *wq_head, struct wait_bit_queue_entry *wbq_entry, wait_bit_action_f *action, unsigned int mode); +void wake_up_bit(void *word, int bit); +void wake_up_atomic_t(atomic_t *p); +int out_of_line_wait_on_bit(void *word, int, wait_bit_action_f *action, unsigned int mode); +int out_of_line_wait_on_bit_timeout(void *word, int, wait_bit_action_f *action, unsigned int mode, unsigned long timeout); +int out_of_line_wait_on_bit_lock(void *word, int, wait_bit_action_f *action, unsigned int mode); +int out_of_line_wait_on_atomic_t(atomic_t *p, int (*)(atomic_t *), unsigned int mode); +struct wait_queue_head *bit_waitqueue(void *word, int bit); +extern void __init wait_bit_init(void); + +int wake_bit_function(struct wait_queue_entry *wq_entry, unsigned mode, int sync, void *key); + +#define DEFINE_WAIT_BIT(name, word, bit) \ + struct wait_bit_queue_entry name = { \ + .key = __WAIT_BIT_KEY_INITIALIZER(word, bit), \ + .wq_entry = { \ + .private = current, \ + .func = wake_bit_function, \ + .entry = \ + LIST_HEAD_INIT((name).wq_entry.entry), \ + }, \ + } + +extern int bit_wait(struct wait_bit_key *key, int bit); +extern int bit_wait_io(struct wait_bit_key *key, int bit); +extern int bit_wait_timeout(struct wait_bit_key *key, int bit); +extern int bit_wait_io_timeout(struct wait_bit_key *key, int bit); + +/** + * wait_on_bit - wait for a bit to be cleared + * @word: the word being waited on, a kernel virtual address + * @bit: the bit of the word being waited on + * @mode: the task state to sleep in + * + * There is a standard hashed waitqueue table for generic use. This + * is the part of the hashtable's accessor API that waits on a bit. + * For instance, if one were to have waiters on a bitflag, one would + * call wait_on_bit() in threads waiting for the bit to clear. + * One uses wait_on_bit() where one is waiting for the bit to clear, + * but has no intention of setting it. + * Returned value will be zero if the bit was cleared, or non-zero + * if the process received a signal and the mode permitted wakeup + * on that signal. + */ +static inline int +wait_on_bit(unsigned long *word, int bit, unsigned mode) +{ + might_sleep(); + if (!test_bit(bit, word)) + return 0; + return out_of_line_wait_on_bit(word, bit, + bit_wait, + mode); +} + +/** + * wait_on_bit_io - wait for a bit to be cleared + * @word: the word being waited on, a kernel virtual address + * @bit: the bit of the word being waited on + * @mode: the task state to sleep in + * + * Use the standard hashed waitqueue table to wait for a bit + * to be cleared. This is similar to wait_on_bit(), but calls + * io_schedule() instead of schedule() for the actual waiting. + * + * Returned value will be zero if the bit was cleared, or non-zero + * if the process received a signal and the mode permitted wakeup + * on that signal. + */ +static inline int +wait_on_bit_io(unsigned long *word, int bit, unsigned mode) +{ + might_sleep(); + if (!test_bit(bit, word)) + return 0; + return out_of_line_wait_on_bit(word, bit, + bit_wait_io, + mode); +} + +/** + * wait_on_bit_timeout - wait for a bit to be cleared or a timeout elapses + * @word: the word being waited on, a kernel virtual address + * @bit: the bit of the word being waited on + * @mode: the task state to sleep in + * @timeout: timeout, in jiffies + * + * Use the standard hashed waitqueue table to wait for a bit + * to be cleared. This is similar to wait_on_bit(), except also takes a + * timeout parameter. + * + * Returned value will be zero if the bit was cleared before the + * @timeout elapsed, or non-zero if the @timeout elapsed or process + * received a signal and the mode permitted wakeup on that signal. + */ +static inline int +wait_on_bit_timeout(unsigned long *word, int bit, unsigned mode, + unsigned long timeout) +{ + might_sleep(); + if (!test_bit(bit, word)) + return 0; + return out_of_line_wait_on_bit_timeout(word, bit, + bit_wait_timeout, + mode, timeout); +} + +/** + * wait_on_bit_action - wait for a bit to be cleared + * @word: the word being waited on, a kernel virtual address + * @bit: the bit of the word being waited on + * @action: the function used to sleep, which may take special actions + * @mode: the task state to sleep in + * + * Use the standard hashed waitqueue table to wait for a bit + * to be cleared, and allow the waiting action to be specified. + * This is like wait_on_bit() but allows fine control of how the waiting + * is done. + * + * Returned value will be zero if the bit was cleared, or non-zero + * if the process received a signal and the mode permitted wakeup + * on that signal. + */ +static inline int +wait_on_bit_action(unsigned long *word, int bit, wait_bit_action_f *action, + unsigned mode) +{ + might_sleep(); + if (!test_bit(bit, word)) + return 0; + return out_of_line_wait_on_bit(word, bit, action, mode); +} + +/** + * wait_on_bit_lock - wait for a bit to be cleared, when wanting to set it + * @word: the word being waited on, a kernel virtual address + * @bit: the bit of the word being waited on + * @mode: the task state to sleep in + * + * There is a standard hashed waitqueue table for generic use. This + * is the part of the hashtable's accessor API that waits on a bit + * when one intends to set it, for instance, trying to lock bitflags. + * For instance, if one were to have waiters trying to set bitflag + * and waiting for it to clear before setting it, one would call + * wait_on_bit() in threads waiting to be able to set the bit. + * One uses wait_on_bit_lock() where one is waiting for the bit to + * clear with the intention of setting it, and when done, clearing it. + * + * Returns zero if the bit was (eventually) found to be clear and was + * set. Returns non-zero if a signal was delivered to the process and + * the @mode allows that signal to wake the process. + */ +static inline int +wait_on_bit_lock(unsigned long *word, int bit, unsigned mode) +{ + might_sleep(); + if (!test_and_set_bit(bit, word)) + return 0; + return out_of_line_wait_on_bit_lock(word, bit, bit_wait, mode); +} + +/** + * wait_on_bit_lock_io - wait for a bit to be cleared, when wanting to set it + * @word: the word being waited on, a kernel virtual address + * @bit: the bit of the word being waited on + * @mode: the task state to sleep in + * + * Use the standard hashed waitqueue table to wait for a bit + * to be cleared and then to atomically set it. This is similar + * to wait_on_bit(), but calls io_schedule() instead of schedule() + * for the actual waiting. + * + * Returns zero if the bit was (eventually) found to be clear and was + * set. Returns non-zero if a signal was delivered to the process and + * the @mode allows that signal to wake the process. + */ +static inline int +wait_on_bit_lock_io(unsigned long *word, int bit, unsigned mode) +{ + might_sleep(); + if (!test_and_set_bit(bit, word)) + return 0; + return out_of_line_wait_on_bit_lock(word, bit, bit_wait_io, mode); +} + +/** + * wait_on_bit_lock_action - wait for a bit to be cleared, when wanting to set it + * @word: the word being waited on, a kernel virtual address + * @bit: the bit of the word being waited on + * @action: the function used to sleep, which may take special actions + * @mode: the task state to sleep in + * + * Use the standard hashed waitqueue table to wait for a bit + * to be cleared and then to set it, and allow the waiting action + * to be specified. + * This is like wait_on_bit() but allows fine control of how the waiting + * is done. + * + * Returns zero if the bit was (eventually) found to be clear and was + * set. Returns non-zero if a signal was delivered to the process and + * the @mode allows that signal to wake the process. + */ +static inline int +wait_on_bit_lock_action(unsigned long *word, int bit, wait_bit_action_f *action, + unsigned mode) +{ + might_sleep(); + if (!test_and_set_bit(bit, word)) + return 0; + return out_of_line_wait_on_bit_lock(word, bit, action, mode); +} + +/** + * wait_on_atomic_t - Wait for an atomic_t to become 0 + * @val: The atomic value being waited on, a kernel virtual address + * @action: the function used to sleep, which may take special actions + * @mode: the task state to sleep in + * + * Wait for an atomic_t to become 0. We abuse the bit-wait waitqueue table for + * the purpose of getting a waitqueue, but we set the key to a bit number + * outside of the target 'word'. + */ +static inline +int wait_on_atomic_t(atomic_t *val, int (*action)(atomic_t *), unsigned mode) +{ + might_sleep(); + if (atomic_read(val) == 0) + return 0; + return out_of_line_wait_on_atomic_t(val, action, mode); +} + +#endif /* _LINUX_WAIT_BIT_H */ |