4 * Internal slab definitions
8 * State of the slab allocator.
10 * This is used to describe the states of the allocator during bootup.
11 * Allocators use this to gradually bootstrap themselves. Most allocators
12 * have the problem that the structures used for managing slab caches are
13 * allocated from slab caches themselves.
16 DOWN, /* No slab functionality yet */
17 PARTIAL, /* SLUB: kmem_cache_node available */
18 PARTIAL_ARRAYCACHE, /* SLAB: kmalloc size for arraycache available */
19 PARTIAL_L3, /* SLAB: kmalloc size for l3 struct available */
20 UP, /* Slab caches usable but not all extras yet */
21 FULL /* Everything is working */
24 extern enum slab_state slab_state;
26 /* The slab cache mutex protects the management structures during changes */
27 extern struct mutex slab_mutex;
29 /* The list of all slab caches on the system */
30 extern struct list_head slab_caches;
32 /* The slab cache that manages slab cache information */
33 extern struct kmem_cache *kmem_cache;
35 /* Functions provided by the slab allocators */
36 extern int __kmem_cache_create(struct kmem_cache *, unsigned long flags);
39 struct kmem_cache *__kmem_cache_alias(const char *name, size_t size,
40 size_t align, unsigned long flags, void (*ctor)(void *));
42 static inline struct kmem_cache *__kmem_cache_alias(const char *name, size_t size,
43 size_t align, unsigned long flags, void (*ctor)(void *))
48 int __kmem_cache_shutdown(struct kmem_cache *);
54 unsigned long active_objs;
55 unsigned long num_objs;
56 unsigned long active_slabs;
57 unsigned long num_slabs;
58 unsigned long shared_avail;
60 unsigned int batchcount;
62 unsigned int objects_per_slab;
63 unsigned int cache_order;
66 void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo);
67 void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s);
68 ssize_t slabinfo_write(struct file *file, const char __user *buffer,
69 size_t count, loff_t *ppos);