diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpuidle.h | 13 | ||||
| -rw-r--r-- | include/linux/suspend.h | 16 | ||||
| -rw-r--r-- | include/linux/tick.h | 6 | ||||
| -rw-r--r-- | include/uapi/linux/Kbuild | 1 | ||||
| -rw-r--r-- | include/uapi/linux/som.h | 154 |
5 files changed, 32 insertions, 158 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index ab70f3bc44ad..f551a9299ac9 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -50,6 +50,15 @@ struct cpuidle_state { int index); int (*enter_dead) (struct cpuidle_device *dev, int index); + + /* + * CPUs execute ->enter_freeze with the local tick or entire timekeeping + * suspended, so it must not re-enable interrupts at any point (even + * temporarily) or attempt to change states of clock event devices. + */ + void (*enter_freeze) (struct cpuidle_device *dev, + struct cpuidle_driver *drv, + int index); }; /* Idle State Flags */ @@ -141,7 +150,7 @@ extern void cpuidle_resume(void); extern int cpuidle_enable_device(struct cpuidle_device *dev); extern void cpuidle_disable_device(struct cpuidle_device *dev); extern int cpuidle_play_dead(void); -extern void cpuidle_use_deepest_state(bool enable); +extern void cpuidle_enter_freeze(void); extern struct cpuidle_driver *cpuidle_get_cpu_driver(struct cpuidle_device *dev); #else @@ -174,7 +183,7 @@ static inline int cpuidle_enable_device(struct cpuidle_device *dev) {return -ENODEV; } static inline void cpuidle_disable_device(struct cpuidle_device *dev) { } static inline int cpuidle_play_dead(void) {return -ENODEV; } -static inline void cpuidle_use_deepest_state(bool enable) {} +static inline void cpuidle_enter_freeze(void) { } static inline struct cpuidle_driver *cpuidle_get_cpu_driver( struct cpuidle_device *dev) {return NULL; } #endif diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 3388c1b6f7d8..5efe743ce1e8 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -201,6 +201,21 @@ struct platform_freeze_ops { */ extern void suspend_set_ops(const struct platform_suspend_ops *ops); extern int suspend_valid_only_mem(suspend_state_t state); + +/* Suspend-to-idle state machnine. */ +enum freeze_state { + FREEZE_STATE_NONE, /* Not suspended/suspending. */ + FREEZE_STATE_ENTER, /* Enter suspend-to-idle. */ + FREEZE_STATE_WAKE, /* Wake up from suspend-to-idle. */ +}; + +extern enum freeze_state __read_mostly suspend_freeze_state; + +static inline bool idle_should_freeze(void) +{ + return unlikely(suspend_freeze_state == FREEZE_STATE_ENTER); +} + extern void freeze_set_ops(const struct platform_freeze_ops *ops); extern void freeze_wake(void); @@ -228,6 +243,7 @@ extern int pm_suspend(suspend_state_t state); static inline void suspend_set_ops(const struct platform_suspend_ops *ops) {} static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; } +static inline bool idle_should_freeze(void) { return false; } static inline void freeze_set_ops(const struct platform_freeze_ops *ops) {} static inline void freeze_wake(void) {} #endif /* !CONFIG_SUSPEND */ diff --git a/include/linux/tick.h b/include/linux/tick.h index eda850ca757a..9c085dc12ae9 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -79,6 +79,9 @@ extern void __init tick_init(void); extern int tick_is_oneshot_available(void); extern struct tick_device *tick_get_device(int cpu); +extern void tick_freeze(void); +extern void tick_unfreeze(void); + # ifdef CONFIG_HIGH_RES_TIMERS extern int tick_init_highres(void); extern int tick_program_event(ktime_t expires, int force); @@ -119,6 +122,8 @@ static inline int tick_oneshot_mode_active(void) { return 0; } #else /* CONFIG_GENERIC_CLOCKEVENTS */ static inline void tick_init(void) { } +static inline void tick_freeze(void) { } +static inline void tick_unfreeze(void) { } static inline void tick_cancel_sched_timer(int cpu) { } static inline void tick_clock_notify(void) { } static inline int tick_check_oneshot_change(int allow_nohz) { return 0; } @@ -226,5 +231,4 @@ static inline void tick_nohz_task_switch(struct task_struct *tsk) __tick_nohz_task_switch(tsk); } - #endif diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild index 7b8141bf59a7..68ceb97c458c 100644 --- a/include/uapi/linux/Kbuild +++ b/include/uapi/linux/Kbuild @@ -370,7 +370,6 @@ header-y += snmp.h header-y += sock_diag.h header-y += socket.h header-y += sockios.h -header-y += som.h header-y += sonet.h header-y += sonypi.h header-y += soundcard.h diff --git a/include/uapi/linux/som.h b/include/uapi/linux/som.h deleted file mode 100644 index 166594e4e7be..000000000000 --- a/include/uapi/linux/som.h +++ /dev/null @@ -1,154 +0,0 @@ -#ifndef _LINUX_SOM_H -#define _LINUX_SOM_H - -/* File format definition for SOM executables / shared libraries */ - -/* we need struct timespec */ -#include <linux/time.h> - -#define SOM_PAGESIZE 4096 - -/* this is the SOM header */ -struct som_hdr { - short system_id; /* magic number - system */ - short a_magic; /* magic number - file type */ - unsigned int version_id; /* versiod ID: YYMMDDHH */ - struct timespec file_time; /* system clock */ - unsigned int entry_space; /* space for entry point */ - unsigned int entry_subspace; /* subspace for entry point */ - unsigned int entry_offset; /* offset of entry point */ - unsigned int aux_header_location; /* auxiliary header location */ - unsigned int aux_header_size; /* auxiliary header size */ - unsigned int som_length; /* length of entire SOM */ - unsigned int presumed_dp; /* compiler's DP value */ - unsigned int space_location; /* space dictionary location */ - unsigned int space_total; /* number of space entries */ - unsigned int subspace_location; /* subspace entries location */ - unsigned int subspace_total; /* number of subspace entries */ - unsigned int loader_fixup_location; /* MPE/iX loader fixup */ - unsigned int loader_fixup_total; /* number of fixup records */ - unsigned int space_strings_location; /* (sub)space names */ - unsigned int space_strings_size; /* size of strings area */ - unsigned int init_array_location; /* reserved */ - unsigned int init_array_total; /* reserved */ - unsigned int compiler_location; /* module dictionary */ - unsigned int compiler_total; /* number of modules */ - unsigned int symbol_location; /* symbol dictionary */ - unsigned int symbol_total; /* number of symbols */ - unsigned int fixup_request_location; /* fixup requests */ - unsigned int fixup_request_total; /* number of fixup requests */ - unsigned int symbol_strings_location;/* module & symbol names area */ - unsigned int symbol_strings_size; /* size of strings area */ - unsigned int unloadable_sp_location; /* unloadable spaces location */ - unsigned int unloadable_sp_size; /* size of data */ - unsigned int checksum; -}; - -/* values for system_id */ - -#define SOM_SID_PARISC_1_0 0x020b -#define SOM_SID_PARISC_1_1 0x0210 -#define SOM_SID_PARISC_2_0 0x0214 - -/* values for a_magic */ - -#define SOM_LIB_EXEC 0x0104 -#define SOM_RELOCATABLE 0x0106 -#define SOM_EXEC_NONSHARE 0x0107 -#define SOM_EXEC_SHARE 0x0108 -#define SOM_EXEC_DEMAND 0x010B -#define SOM_LIB_DYN 0x010D -#define SOM_LIB_SHARE 0x010E -#define SOM_LIB_RELOC 0x0619 - -/* values for version_id. Decimal not hex, yes. Grr. */ - -#define SOM_ID_OLD 85082112 -#define SOM_ID_NEW 87102412 - -struct aux_id { - unsigned int mandatory :1; /* the linker must understand this */ - unsigned int copy :1; /* Must be copied by the linker */ - unsigned int append :1; /* Must be merged by the linker */ - unsigned int ignore :1; /* Discard section if unknown */ - unsigned int reserved :12; - unsigned int type :16; /* Header type */ - unsigned int length; /* length of _following_ data */ -}; - -/* The Exec Auxiliary Header. Called The HP-UX Header within HP apparently. */ -struct som_exec_auxhdr { - struct aux_id som_auxhdr; - int exec_tsize; /* Text size in bytes */ - int exec_tmem; /* Address to load text at */ - int exec_tfile; /* Location of text in file */ - int exec_dsize; /* Data size in bytes */ - int exec_dmem; /* Address to load data at */ - int exec_dfile; /* Location of data in file */ - int exec_bsize; /* Uninitialised data (bss) */ - int exec_entry; /* Address to start executing */ - int exec_flags; /* loader flags */ - int exec_bfill; /* initialisation value for bss */ -}; - -/* Oh, the things people do to avoid casts. Shame it'll break with gcc's - * new aliasing rules really. - */ -union name_pt { - char * n_name; - unsigned int n_strx; -}; - -/* The Space Dictionary */ -struct space_dictionary_record { - union name_pt name; /* index to subspace name */ - unsigned int is_loadable :1; /* loadable */ - unsigned int is_defined :1; /* defined within file */ - unsigned int is_private :1; /* not sharable */ - unsigned int has_intermediate_code :1; /* contains intermediate code */ - unsigned int is_tspecific :1; /* thread specific */ - unsigned int reserved :11; /* for future expansion */ - unsigned int sort_key :8; /* for linker */ - unsigned int reserved2 :8; /* for future expansion */ - - int space_number; /* index */ - int subspace_index; /* index into subspace dict */ - unsigned int subspace_quantity; /* number of subspaces */ - int loader_fix_index; /* for loader */ - unsigned int loader_fix_quantity; /* for loader */ - int init_pointer_index; /* data pointer array index */ - unsigned int init_pointer_quantity; /* number of data pointers */ -}; - -/* The Subspace Dictionary */ -struct subspace_dictionary_record { - int space_index; - unsigned int access_control_bits :7; - unsigned int memory_resident :1; - unsigned int dup_common :1; - unsigned int is_common :1; - unsigned int quadrant :2; - unsigned int initially_frozen :1; - unsigned int is_first :1; - unsigned int code_only :1; - unsigned int sort_key :8; - unsigned int replicate_init :1; - unsigned int continuation :1; - unsigned int is_tspecific :1; - unsigned int is_comdat :1; - unsigned int reserved :4; - - int file_loc_init_value; - unsigned int initialization_length; - unsigned int subspace_start; - unsigned int subspace_length; - - unsigned int reserved2 :5; - unsigned int alignment :27; - - union name_pt name; - int fixup_request_index; - unsigned int fixup_request_quantity; -}; - -#endif /* _LINUX_SOM_H */ |