http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/slab.h

/* * linux/mm/slab.h * Written by Mark Hemment, 1996. * (markhe@nextd.demon.co.uk) */ #ifndef _LINUX_SLAB_H #define _LINUX_SLAB_H #if defined(__KERNEL__) typedef struct kmem_cache kmem_cache_t; #include <linux/config.h> /* kmalloc_sizes.h needs CONFIG_ options */ #include <linux/gfp.h> #include <linux/init.h> #include <linux/types.h> #include <asm/page.h> /* kmalloc_sizes.h needs PAGE_SIZE */ #include <asm/cache.h> /* kmalloc_sizes.h needs L1_CACHE_BYTES */ /* flags for kmem_cache_alloc() */ #define SLAB_NOFS GFP_NOFS #define SLAB_NOIO GFP_NOIO #define SLAB_ATOMIC GFP_ATOMIC #define SLAB_USER GFP_USER #define SLAB_KERNEL GFP_KERNEL #define SLAB_DMA GFP_DMA #define SLAB_LEVEL_MASK GFP_LEVEL_MASK #define SLAB_NO_GROW __GFP_NO_GROW /* 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 */ #define SLAB_STORE_USER 0x00010000UL /* store the last owner for bug hunting */ #define SLAB_RECLAIM_ACCOUNT 0x00020000UL /* track pages allocated to indicate what is reclaimable later*/ #define SLAB_PANIC 0x00040000UL /* panic if kmem_cache_create() fails */ #define SLAB_DESTROY_BY_RCU 0x00080000UL /* defer freeing pages to RCU */ /* 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 */ #ifndef CONFIG_SLOB /* prototypes */ extern void __init kmem_cache_init(void); 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 *, gfp_t); extern void kmem_cache_free(kmem_cache_t *, void *); extern unsigned int kmem_cache_size(kmem_cache_t *); extern const char *kmem_cache_name(kmem_cache_t *); extern kmem_cache_t *kmem_find_general_cachep(size_t size, gfp_t gfpflags); /* Size description struct for general caches. */ struct cache_sizes { size_t cs_size; kmem_cache_t *cs_cachep; kmem_cache_t *cs_dmacachep; }; extern struct cache_sizes malloc_sizes[]; #ifndef CONFIG_DEBUG_SLAB extern void *__kmalloc(size_t, gfp_t); #else extern void *__kmalloc_track_caller(size_t, gfp_t, void*); #define __kmalloc(size, flags) \ __kmalloc_track_caller(size, flags, __builtin_return_address(0)) #endif static inline void *kmalloc(size_t size, gfp_t flags) { if (__builtin_constant_p(size)) { int i = 0; #define CACHE(x) \ if (size <= x) \ goto found; \ else \ i++; #include "kmalloc_sizes.h" #undef CACHE { extern void __you_cannot_kmalloc_that_much(void); __you_cannot_kmalloc_that_much(); } found: return kmem_cache_alloc((flags & GFP_DMA) ? malloc_sizes[i].cs_dmacachep : malloc_sizes[i].cs_cachep, flags); } return __kmalloc(size, flags); } extern void *kzalloc(size_t, gfp_t); /** * kcalloc - allocate memory for an array. The memory is set to zero. * @n: number of elements. * @size: element size. * @flags: the type of memory to allocate. */ static inline void *kcalloc(size_t n, size_t size, gfp_t flags) { if (n != 0 && size > INT_MAX / n) return NULL; return kzalloc(n * size, flags); } extern void kfree(const void *); extern unsigned int ksize(const void *); #ifdef CONFIG_NUMA extern void *kmem_cache_alloc_node(kmem_cache_t *, gfp_t flags, int node); extern void *kmalloc_node(size_t size, gfp_t flags, int node); #else static inline void *kmem_cache_alloc_node(kmem_cache_t *cachep, gfp_t flags, int node) { return kmem_cache_alloc(cachep, flags); } static inline void *kmalloc_node(size_t size, gfp_t flags, int node) { return kmalloc(size, flags); } #endif extern int FASTCALL(kmem_cache_reap(int)); extern int FASTCALL(kmem_ptr_validate(kmem_cache_t *cachep, void *ptr)); #else /* CONFIG_SLOB */ /* SLOB allocator routines */ void kmem_cache_init(void); struct kmem_cache *kmem_find_general_cachep(size_t, gfp_t gfpflags); struct kmem_cache *kmem_cache_create(const char *c, size_t, size_t, unsigned long, void (*)(void *, struct kmem_cache *, unsigned long), void (*)(void *, struct kmem_cache *, unsigned long)); int kmem_cache_destroy(struct kmem_cache *c); void *kmem_cache_alloc(struct kmem_cache *c, gfp_t flags); void kmem_cache_free(struct kmem_cache *c, void *b); const char *kmem_cache_name(struct kmem_cache *); void *kmalloc(size_t size, gfp_t flags); void *kzalloc(size_t size, gfp_t flags); void kfree(const void *m); unsigned int ksize(const void *m); unsigned int kmem_cache_size(struct kmem_cache *c); static inline void *kcalloc(size_t n, size_t size, gfp_t flags) { return kzalloc(n * size, flags); } #define kmem_cache_shrink(d) (0) #define kmem_cache_reap(a) #define kmem_ptr_validate(a, b) (0) #define kmem_cache_alloc_node(c, f, n) kmem_cache_alloc(c, f) #define kmalloc_node(s, f, n) kmalloc(s, f) #endif /* CONFIG_SLOB */ /* System wide caches */ extern kmem_cache_t *vm_area_cachep; extern kmem_cache_t *names_cachep; extern kmem_cache_t *files_cachep; extern kmem_cache_t *filp_cachep; extern kmem_cache_t *fs_cachep; extern kmem_cache_t *signal_cachep; extern kmem_cache_t *sighand_cachep; extern kmem_cache_t *bio_cachep; extern atomic_t slab_reclaim_pages; #endif /* __KERNEL__ */ #endif /* _LINUX_SLAB_H */