diff options
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 130 |
1 files changed, 81 insertions, 49 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 05092c37a430..80bc5640bb60 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -22,19 +22,20 @@ #include <linux/mm_types.h> #include <linux/page-flags.h> #include <linux/local_lock.h> +#include <linux/zswap.h> #include <asm/page.h> /* Free memory management - zoned buddy allocator. */ #ifndef CONFIG_ARCH_FORCE_MAX_ORDER -#define MAX_ORDER 10 +#define MAX_PAGE_ORDER 10 #else -#define MAX_ORDER CONFIG_ARCH_FORCE_MAX_ORDER +#define MAX_PAGE_ORDER CONFIG_ARCH_FORCE_MAX_ORDER #endif -#define MAX_ORDER_NR_PAGES (1 << MAX_ORDER) +#define MAX_ORDER_NR_PAGES (1 << MAX_PAGE_ORDER) #define IS_MAX_ORDER_ALIGNED(pfn) IS_ALIGNED(pfn, MAX_ORDER_NR_PAGES) -#define NR_PAGE_ORDERS (MAX_ORDER + 1) +#define NR_PAGE_ORDERS (MAX_PAGE_ORDER + 1) /* * PAGE_ALLOC_COSTLY_ORDER is the order at which allocations are deemed @@ -75,9 +76,12 @@ extern const char * const migratetype_names[MIGRATE_TYPES]; #ifdef CONFIG_CMA # define is_migrate_cma(migratetype) unlikely((migratetype) == MIGRATE_CMA) # define is_migrate_cma_page(_page) (get_pageblock_migratetype(_page) == MIGRATE_CMA) +# define is_migrate_cma_folio(folio, pfn) (MIGRATE_CMA == \ + get_pfnblock_flags_mask(&folio->page, pfn, MIGRATETYPE_MASK)) #else # define is_migrate_cma(migratetype) false # define is_migrate_cma_page(_page) false +# define is_migrate_cma_folio(folio, pfn) false #endif static inline bool is_migrate_movable(int mt) @@ -201,7 +205,10 @@ enum node_stat_item { NR_KERNEL_SCS_KB, /* measured in KiB */ #endif NR_PAGETABLE, /* used for pagetables */ - NR_SECONDARY_PAGETABLE, /* secondary pagetables, e.g. KVM pagetables */ + NR_SECONDARY_PAGETABLE, /* secondary pagetables, KVM & IOMMU */ +#ifdef CONFIG_IOMMU_SUPPORT + NR_IOMMU_PAGES, /* # of pages allocated by IOMMU */ +#endif #ifdef CONFIG_SWAP NR_SWAPCACHE, #endif @@ -209,6 +216,10 @@ enum node_stat_item { PGPROMOTE_SUCCESS, /* promote successfully */ PGPROMOTE_CANDIDATE, /* candidate pages to promote */ #endif + /* PGDEMOTE_*: pages demoted */ + PGDEMOTE_KSWAPD, + PGDEMOTE_DIRECT, + PGDEMOTE_KHUGEPAGED, NR_VM_NODE_STAT_ITEMS }; @@ -437,21 +448,17 @@ struct lru_gen_folio { atomic_long_t refaulted[NR_HIST_GENS][ANON_AND_FILE][MAX_NR_TIERS]; /* whether the multi-gen LRU is enabled */ bool enabled; -#ifdef CONFIG_MEMCG /* the memcg generation this lru_gen_folio belongs to */ u8 gen; /* the list segment this lru_gen_folio belongs to */ u8 seg; /* per-node lru_gen_folio list for global reclaim */ struct hlist_nulls_node list; -#endif }; enum { MM_LEAF_TOTAL, /* total leaf entries */ - MM_LEAF_OLD, /* old leaf entries */ MM_LEAF_YOUNG, /* young leaf entries */ - MM_NONLEAF_TOTAL, /* total non-leaf entries */ MM_NONLEAF_FOUND, /* non-leaf entries found in Bloom filters */ MM_NONLEAF_ADDED, /* non-leaf entries added to Bloom filters */ NR_MM_STATS @@ -461,7 +468,7 @@ enum { #define NR_BLOOM_FILTERS 2 struct lru_gen_mm_state { - /* set to max_seq after each iteration */ + /* synced with max_seq after each iteration */ unsigned long seq; /* where the current iteration continues after */ struct list_head *head; @@ -476,8 +483,8 @@ struct lru_gen_mm_state { struct lru_gen_mm_walk { /* the lruvec under reclaim */ struct lruvec *lruvec; - /* unstable max_seq from lru_gen_folio */ - unsigned long max_seq; + /* max_seq from lru_gen_folio: can be out of date */ + unsigned long seq; /* the next address within an mm to scan */ unsigned long next_addr; /* to batch promoted pages */ @@ -490,11 +497,6 @@ struct lru_gen_mm_walk { bool force_scan; }; -void lru_gen_init_lruvec(struct lruvec *lruvec); -void lru_gen_look_around(struct page_vma_mapped_walk *pvmw); - -#ifdef CONFIG_MEMCG - /* * For each node, memcgs are divided into two generations: the old and the * young. For each generation, memcgs are randomly sharded into multiple bins @@ -552,6 +554,8 @@ struct lru_gen_memcg { }; void lru_gen_init_pgdat(struct pglist_data *pgdat); +void lru_gen_init_lruvec(struct lruvec *lruvec); +bool lru_gen_look_around(struct page_vma_mapped_walk *pvmw); void lru_gen_init_memcg(struct mem_cgroup *memcg); void lru_gen_exit_memcg(struct mem_cgroup *memcg); @@ -560,19 +564,6 @@ void lru_gen_offline_memcg(struct mem_cgroup *memcg); void lru_gen_release_memcg(struct mem_cgroup *memcg); void lru_gen_soft_reclaim(struct mem_cgroup *memcg, int nid); -#else /* !CONFIG_MEMCG */ - -#define MEMCG_NR_GENS 1 - -struct lru_gen_memcg { -}; - -static inline void lru_gen_init_pgdat(struct pglist_data *pgdat) -{ -} - -#endif /* CONFIG_MEMCG */ - #else /* !CONFIG_LRU_GEN */ static inline void lru_gen_init_pgdat(struct pglist_data *pgdat) @@ -583,12 +574,11 @@ static inline void lru_gen_init_lruvec(struct lruvec *lruvec) { } -static inline void lru_gen_look_around(struct page_vma_mapped_walk *pvmw) +static inline bool lru_gen_look_around(struct page_vma_mapped_walk *pvmw) { + return false; } -#ifdef CONFIG_MEMCG - static inline void lru_gen_init_memcg(struct mem_cgroup *memcg) { } @@ -613,8 +603,6 @@ static inline void lru_gen_soft_reclaim(struct mem_cgroup *memcg, int nid) { } -#endif /* CONFIG_MEMCG */ - #endif /* CONFIG_LRU_GEN */ struct lruvec { @@ -637,16 +625,17 @@ struct lruvec { #ifdef CONFIG_LRU_GEN /* evictable pages divided into generations */ struct lru_gen_folio lrugen; +#ifdef CONFIG_LRU_GEN_WALKS_MMU /* to concurrently iterate lru_gen_mm_list */ struct lru_gen_mm_state mm_state; #endif +#endif /* CONFIG_LRU_GEN */ #ifdef CONFIG_MEMCG struct pglist_data *pgdat; #endif + struct zswap_lruvec_state zswap_lruvec_state; }; -/* Isolate unmapped pages */ -#define ISOLATE_UNMAPPED ((__force isolate_mode_t)0x2) /* Isolate for asynchronous migration */ #define ISOLATE_ASYNC_MIGRATE ((__force isolate_mode_t)0x4) /* Isolate unevictable pages */ @@ -676,20 +665,34 @@ enum zone_watermarks { #define NR_LOWORDER_PCP_LISTS (MIGRATE_PCPTYPES * (PAGE_ALLOC_COSTLY_ORDER + 1)) #define NR_PCP_LISTS (NR_LOWORDER_PCP_LISTS + NR_PCP_THP) -#define min_wmark_pages(z) (z->_watermark[WMARK_MIN] + z->watermark_boost) -#define low_wmark_pages(z) (z->_watermark[WMARK_LOW] + z->watermark_boost) -#define high_wmark_pages(z) (z->_watermark[WMARK_HIGH] + z->watermark_boost) -#define wmark_pages(z, i) (z->_watermark[i] + z->watermark_boost) +/* + * Flags used in pcp->flags field. + * + * PCPF_PREV_FREE_HIGH_ORDER: a high-order page is freed in the + * previous page freeing. To avoid to drain PCP for an accident + * high-order page freeing. + * + * PCPF_FREE_HIGH_BATCH: preserve "pcp->batch" pages in PCP before + * draining PCP for consecutive high-order pages freeing without + * allocation if data cache slice of CPU is large enough. To reduce + * zone lock contention and keep cache-hot pages reusing. + */ +#define PCPF_PREV_FREE_HIGH_ORDER BIT(0) +#define PCPF_FREE_HIGH_BATCH BIT(1) struct per_cpu_pages { spinlock_t lock; /* Protects lists field */ int count; /* number of pages in the list */ int high; /* high watermark, emptying needed */ + int high_min; /* min high watermark */ + int high_max; /* max high watermark */ int batch; /* chunk size for buddy add/remove */ - short free_factor; /* batch scaling factor during free */ + u8 flags; /* protected by pcp->lock */ + u8 alloc_factor; /* batch scaling factor during allocate */ #ifdef CONFIG_NUMA - short expire; /* When 0, remote pagesets are drained */ + u8 expire; /* When 0, remote pagesets are drained */ #endif + short free_count; /* consecutive free count */ /* Lists of pages, one per migrate type stored on the pcp-lists */ struct list_head lists[NR_PCP_LISTS]; @@ -820,6 +823,7 @@ struct zone { unsigned long watermark_boost; unsigned long nr_reserved_highatomic; + unsigned long nr_free_highatomic; /* * We don't know if the memory that we're going to allocate will be @@ -842,7 +846,8 @@ struct zone { * the high and batch values are copied to individual pagesets for * faster access */ - int pageset_high; + int pageset_high_min; + int pageset_high_max; int pageset_batch; #ifndef CONFIG_SPARSEMEM @@ -933,7 +938,7 @@ struct zone { struct free_area free_area[NR_PAGE_ORDERS]; #ifdef CONFIG_UNACCEPTED_MEMORY - /* Pages to be accepted. All pages on the list are MAX_ORDER */ + /* Pages to be accepted. All pages on the list are MAX_PAGE_ORDER */ struct list_head unaccepted_pages; #endif @@ -1003,8 +1008,35 @@ enum zone_flags { * Cleared when kswapd is woken. */ ZONE_RECLAIM_ACTIVE, /* kswapd may be scanning the zone. */ + ZONE_BELOW_HIGH, /* zone is below high watermark. */ }; +static inline unsigned long wmark_pages(const struct zone *z, + enum zone_watermarks w) +{ + return z->_watermark[w] + z->watermark_boost; +} + +static inline unsigned long min_wmark_pages(const struct zone *z) +{ + return wmark_pages(z, WMARK_MIN); +} + +static inline unsigned long low_wmark_pages(const struct zone *z) +{ + return wmark_pages(z, WMARK_LOW); +} + +static inline unsigned long high_wmark_pages(const struct zone *z) +{ + return wmark_pages(z, WMARK_HIGH); +} + +static inline unsigned long promo_wmark_pages(const struct zone *z) +{ + return wmark_pages(z, WMARK_PROMO); +} + static inline unsigned long zone_managed_pages(struct zone *zone) { return (unsigned long)atomic_long_read(&zone->managed_pages); @@ -1677,7 +1709,7 @@ static inline struct zoneref *first_zones_zonelist(struct zonelist *zonelist, zone = zonelist_zone(z)) #define for_next_zone_zonelist_nodemask(zone, z, highidx, nodemask) \ - for (zone = z->zone; \ + for (zone = zonelist_zone(z); \ zone; \ z = next_zones_zonelist(++z, highidx, nodemask), \ zone = zonelist_zone(z)) @@ -1713,7 +1745,7 @@ static inline bool movable_only_nodes(nodemask_t *nodes) nid = first_node(*nodes); zonelist = &NODE_DATA(nid)->node_zonelists[ZONELIST_FALLBACK]; z = first_zones_zonelist(zonelist, ZONE_NORMAL, nodes); - return (!z->zone) ? true : false; + return (!zonelist_zone(z)) ? true : false; } @@ -1742,8 +1774,8 @@ static inline bool movable_only_nodes(nodemask_t *nodes) #define SECTION_BLOCKFLAGS_BITS \ ((1UL << (PFN_SECTION_SHIFT - pageblock_order)) * NR_PAGEBLOCK_BITS) -#if (MAX_ORDER + PAGE_SHIFT) > SECTION_SIZE_BITS -#error Allocator MAX_ORDER exceeds SECTION_SIZE +#if (MAX_PAGE_ORDER + PAGE_SHIFT) > SECTION_SIZE_BITS +#error Allocator MAX_PAGE_ORDER exceeds SECTION_SIZE #endif static inline unsigned long pfn_to_section_nr(unsigned long pfn) |