| /* |
| * 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/gfp.h> |
| #include <linux/types.h> |
| |
| /* flags for kmem_cache_alloc() */ |
| #define SLAB_NOFS GFP_NOFS |
| #define SLAB_NOIO GFP_NOIO |
| #define SLAB_NOHIGHIO GFP_NOHIGHIO |
| #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|__GFP_HIGHIO|__GFP_FS) |
| #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 */ |
| #define SLAB_MUST_HWCACHE_ALIGN 0x00008000UL /* force alignment */ |
| |
| /* 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 int FASTCALL(kmem_cache_reap(int)); |
| extern int slabinfo_read_proc(char *page, char **start, off_t off, |
| int count, int *eof, void *data); |
| struct file; |
| 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; |
| extern kmem_cache_t *bio_cachep; |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _LINUX_SLAB_H */ |