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/*
* linux/mm/slab.h
* Written by Mark Hemment, 1996.
* (markhe@nextd.demon.co.uk)
*/
#if !defined(_LINUX_SLAB_H)
#define _LINUX_SLAB_H
#if defined(__KERNEL__)
typedef struct kmem_cache_s kmem_cache_t;
#include <linux/mm.h>
#include <linux/cache.h>
/* flags for kmem_cache_alloc() */
#define SLAB_BUFFER GFP_BUFFER
#define SLAB_ATOMIC GFP_ATOMIC
#define SLAB_USER GFP_USER
#define SLAB_KERNEL GFP_KERNEL
#define SLAB_NFS GFP_NFS
#define SLAB_DMA GFP_DMA
#define SLAB_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO)
#define SLAB_NO_GROW 0x00001000UL /* don't grow a cache */
/* flags to pass to kmem_cache_create().
* The first 3 are only valid when the allocator as been build
* SLAB_DEBUG_SUPPORT.
*/
#define SLAB_DEBUG_FREE 0x00000100UL /* Peform (expensive) checks on free */
#define SLAB_DEBUG_INITIAL 0x00000200UL /* Call constructor (as verifier) */
#define SLAB_RED_ZONE 0x00000400UL /* Red zone objs in a cache */
#define SLAB_POISON 0x00000800UL /* Poison objects */
#define SLAB_NO_REAP 0x00001000UL /* never reap from the cache */
#define SLAB_HWCACHE_ALIGN 0x00002000UL /* align objs on a h/w cache lines */
#define SLAB_CACHE_DMA 0x00004000UL /* use GFP_DMA memory */
/* flags passed to a constructor func */
#define SLAB_CTOR_CONSTRUCTOR 0x001UL /* if not set, then deconstructor */
#define SLAB_CTOR_ATOMIC 0x002UL /* tell constructor it can't sleep */
#define SLAB_CTOR_VERIFY 0x004UL /* tell constructor it's a verify call */
/* prototypes */
extern void kmem_cache_init(void);
extern void kmem_cache_sizes_init(void);
extern kmem_cache_t *kmem_find_general_cachep(size_t, int gfpflags);
extern kmem_cache_t *kmem_cache_create(const char *, size_t, size_t, unsigned long,
void (*)(void *, kmem_cache_t *, unsigned long),
void (*)(void *, kmem_cache_t *, unsigned long));
extern int kmem_cache_destroy(kmem_cache_t *);
extern int kmem_cache_shrink(kmem_cache_t *);
extern void *kmem_cache_alloc(kmem_cache_t *, int);
extern void kmem_cache_free(kmem_cache_t *, void *);
extern void *kmalloc(size_t, int);
extern void kfree(const void *);
extern void kmem_cache_reap(int);
extern int slabinfo_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data);
extern int slabinfo_write_proc(struct file *file, const char *buffer,
unsigned long count, void *data);
/* System wide caches */
extern kmem_cache_t *vm_area_cachep;
extern kmem_cache_t *mm_cachep;
extern kmem_cache_t *names_cachep;
extern kmem_cache_t *files_cachep;
extern kmem_cache_t *filp_cachep;
extern kmem_cache_t *dquot_cachep;
extern kmem_cache_t *bh_cachep;
extern kmem_cache_t *fs_cachep;
extern kmem_cache_t *sigact_cachep;
#endif /* __KERNEL__ */
#endif /* _LINUX_SLAB_H */
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