include/linux/mmzone.h

Source file repositories/reference/linux-study-clean/include/linux/mmzone.h

File Facts

System
Linux kernel
Corpus path
include/linux/mmzone.h
Extension
.h
Size
76094 bytes
Lines
2394
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct free_area {
	struct list_head	free_list[MIGRATE_TYPES];
	unsigned long		nr_free;
};

struct pglist_data;

#ifdef CONFIG_NUMA
enum numa_stat_item {
	NUMA_HIT,		/* allocated in intended node */
	NUMA_MISS,		/* allocated in non intended node */
	NUMA_FOREIGN,		/* was intended here, hit elsewhere */
	NUMA_INTERLEAVE_HIT,	/* interleaver preferred this zone */
	NUMA_LOCAL,		/* allocation from local node */
	NUMA_OTHER,		/* allocation from other node */
	NR_VM_NUMA_EVENT_ITEMS
};
#else
#define NR_VM_NUMA_EVENT_ITEMS 0
#endif

enum zone_stat_item {
	NR_FREE_PAGES,
	NR_FREE_PAGES_BLOCKS,
	NR_ZONE_LRU_BASE, /* Used only for compaction and reclaim retry */
	NR_ZONE_INACTIVE_ANON = NR_ZONE_LRU_BASE,
	NR_ZONE_ACTIVE_ANON,
	NR_ZONE_INACTIVE_FILE,
	NR_ZONE_ACTIVE_FILE,
	NR_ZONE_UNEVICTABLE,
	NR_ZONE_WRITE_PENDING,	/* Count of dirty, writeback and unstable pages */
	NR_MLOCK,		/* mlock()ed pages found and moved off LRU */
#if IS_ENABLED(CONFIG_ZSMALLOC)
	NR_ZSPAGES,		/* allocated in zsmalloc */
#endif
	NR_FREE_CMA_PAGES,
#ifdef CONFIG_UNACCEPTED_MEMORY
	NR_UNACCEPTED,
#endif
	NR_VM_ZONE_STAT_ITEMS };

enum node_stat_item {
	NR_LRU_BASE,
	NR_INACTIVE_ANON = NR_LRU_BASE, /* must match order of LRU_[IN]ACTIVE */
	NR_ACTIVE_ANON,		/*  "     "     "   "       "         */
	NR_INACTIVE_FILE,	/*  "     "     "   "       "         */
	NR_ACTIVE_FILE,		/*  "     "     "   "       "         */
	NR_UNEVICTABLE,		/*  "     "     "   "       "         */
	NR_SLAB_RECLAIMABLE_B,
	NR_SLAB_UNRECLAIMABLE_B,
	NR_ISOLATED_ANON,	/* Temporary isolated pages from anon lru */
	NR_ISOLATED_FILE,	/* Temporary isolated pages from file lru */
	WORKINGSET_NODES,
	WORKINGSET_REFAULT_BASE,
	WORKINGSET_REFAULT_ANON = WORKINGSET_REFAULT_BASE,
	WORKINGSET_REFAULT_FILE,
	WORKINGSET_ACTIVATE_BASE,
	WORKINGSET_ACTIVATE_ANON = WORKINGSET_ACTIVATE_BASE,
	WORKINGSET_ACTIVATE_FILE,
	WORKINGSET_RESTORE_BASE,
	WORKINGSET_RESTORE_ANON = WORKINGSET_RESTORE_BASE,
	WORKINGSET_RESTORE_FILE,
	WORKINGSET_NODERECLAIM,
	NR_ANON_MAPPED,	/* Mapped anonymous pages */
	NR_FILE_MAPPED,	/* pagecache pages mapped into pagetables.
			   only modified from process context */
	NR_FILE_PAGES,
	NR_FILE_DIRTY,
	NR_WRITEBACK,
	NR_SHMEM,		/* shmem pages (included tmpfs/GEM pages) */
	NR_SHMEM_THPS,
	NR_SHMEM_PMDMAPPED,
	NR_FILE_THPS,
	NR_FILE_PMDMAPPED,
	NR_ANON_THPS,
	NR_VMSCAN_WRITE,
	NR_VMSCAN_IMMEDIATE,	/* Prioritise for reclaim when writeback ends */
	NR_DIRTIED,		/* page dirtyings since bootup */
	NR_WRITTEN,		/* page writings since bootup */
	NR_THROTTLED_WRITTEN,	/* NR_WRITTEN while reclaim throttled */
	NR_KERNEL_MISC_RECLAIMABLE,	/* reclaimable non-slab kernel pages */
	NR_FOLL_PIN_ACQUIRED,	/* via: pin_user_page(), gup flag: FOLL_PIN */
	NR_FOLL_PIN_RELEASED,	/* pages returned via unpin_user_page() */
	NR_VMALLOC,
	NR_KERNEL_STACK_KB,	/* measured in KiB */
#if IS_ENABLED(CONFIG_SHADOW_CALL_STACK)
	NR_KERNEL_SCS_KB,	/* measured in KiB */
#endif
	NR_PAGETABLE,		/* used for pagetables */
	NR_SECONDARY_PAGETABLE, /* secondary pagetables, KVM & IOMMU */

Annotation

Implementation Notes