Include/linux/slab.h
17341 /* 17342 * linux/mm/slab.h 17343 * Written by Mark Hemment, 1996. 17344 * (markhe@nextd.demon.co.uk) 17345 */ 17346 17347 #if !defined(_LINUX_SLAB_H) 17348 #define _LINUX_SLAB_H 17349 17350 #if defined(__KERNEL__) 17351 17352 typedef struct kmem_cache_s kmem_cache_t; 17353 17354 #include <linux/mm.h> 17355 #include <asm/cache.h> 17356 17357 /* flags for kmem_cache_alloc() */ 17358 #define SLAB_BUFFER GFP_BUFFER 17359 #define SLAB_ATOMIC GFP_ATOMIC 17360 #define SLAB_USER GFP_USER 17361 #define SLAB_KERNEL GFP_KERNEL 17362 #define SLAB_NFS GFP_NFS 17363 #define SLAB_DMA GFP_DMA 17364 17365 #define SLAB_LEVEL_MASK 0x0000007fUL 17366 /* don't grow a cache */ 17367 #define SLAB_NO_GROW 0x00001000UL 17368 17369 /* flags to pass to kmem_cache_create(). The first 3 are 17370 * only valid when the allocator as been build 17371 * SLAB_DEBUG_SUPPORT. */ 17372 /* Peform (expensive) checks on free */ 17373 #define SLAB_DEBUG_FREE 0x00000100UL 17374 /* Call constructor (as verifier) */ 17375 #define SLAB_DEBUG_INITIAL 0x00000200UL 17376 /* Red zone objs in a cache */ 17377 #define SLAB_RED_ZONE 0x00000400UL 17378 /* Poison objects */ 17379 #define SLAB_POISON 0x00000800UL 17380 /* never reap from the cache */ 17381 #define SLAB_NO_REAP 0x00001000UL 17382 /* align objs on a h/w cache lines */ 17383 #define SLAB_HWCACHE_ALIGN 0x00002000UL 17384 #if 0 17385 #define SLAB_HIGH_PACK 0x00004000UL /* XXX */ 17386 #endif 17387 17388 /* flags passed to a constructor func */ 17389 /* if not set, then deconstructor */ 17390 #define SLAB_CTOR_CONSTRUCTOR 0x001UL 17391 /* tell constructor it can't sleep */ 17392 #define SLAB_CTOR_ATOMIC 0x002UL 17393 /* tell constructor it's a verify call */ 17394 #define SLAB_CTOR_VERIFY 0x004UL 17395 17396 /* prototypes */ 17397 extern long kmem_cache_init(long, long); 17398 extern void kmem_cache_sizes_init(void); 17399 extern kmem_cache_t *kmem_find_general_cachep(size_t); 17400 extern kmem_cache_t *kmem_cache_create(const char *, 17401 size_t, size_t, unsigned long, 17402 void (*)(void *, kmem_cache_t *, unsigned long), 17403 void (*)(void *, kmem_cache_t *, unsigned long)); 17404 extern int kmem_cache_shrink(kmem_cache_t *); 17405 extern void *kmem_cache_alloc(kmem_cache_t *, int); 17406 extern void kmem_cache_free(kmem_cache_t *, void *); 17407 17408 extern void *kmalloc(size_t, int); 17409 extern void kfree(const void *); 17410 extern void kfree_s(const void *, size_t); 17411 17412 extern void kmem_cache_reap(int); 17413 extern int get_slabinfo(char *); 17414 17415 /* System wide caches */ 17416 extern kmem_cache_t *vm_area_cachep; 17417 extern kmem_cache_t *mm_cachep; 17418 17419 #endif /* __KERNEL__ */ 17420 17421 #endif /* _LINUX_SLAB_H */
