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/*
* Written by Mark Hemment, 1996 (markhe@nextd.demon.co.uk).
*
* (C) SGI 2006, Christoph Lameter
* Cleaned up and restructured to ease the addition of alternative
* implementations of SLAB allocators.
*/
#ifndef _LINUX_SLAB_H
#define _LINUX_SLAB_H
#include <linux/gfp.h>
#include <linux/types.h>
#define SLAB_DEBUG_FREE 0x00000100UL
#define SLAB_RED_ZONE 0x00000400UL
#define SLAB_POISON 0x00000800UL
#define SLAB_HWCACHE_ALIGN 0x00002000UL
#define SLAB_CACHE_DMA 0x00004000UL
#define SLAB_STORE_USER 0x00010000UL
#define SLAB_PANIC 0x00040000UL
#define SLAB_DESTROY_BY_RCU 0x00080000UL
#define SLAB_MEM_SPREAD 0x00100000UL
#define SLAB_TRACE 0x00200000UL
#ifdef CONFIG_DEBUG_OBJECTS
# define SLAB_DEBUG_OBJECTS 0x00400000UL
#else
# define SLAB_DEBUG_OBJECTS 0x00000000UL
#endif
#define SLAB_NOLEAKTRACE 0x00800000UL
#ifdef CONFIG_KMEMCHECK
# define SLAB_NOTRACK 0x01000000UL
#else
# define SLAB_NOTRACK 0x00000000UL
#endif
#ifdef CONFIG_FAILSLAB
# define SLAB_FAILSLAB 0x02000000UL
#else
# define SLAB_FAILSLAB 0x00000000UL
#endif
#define SLAB_RECLAIM_ACCOUNT 0x00020000UL
#define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT
#define ZERO_SIZE_PTR ((void *)16)
#define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) <= \
(unsigned long)ZERO_SIZE_PTR)
void __init kmem_cache_init(void);
int slab_is_available(void);
struct kmem_cache *kmem_cache_create(const char *, size_t, size_t,
unsigned long,
void (*)(void *));
void kmem_cache_destroy(struct kmem_cache *);
int kmem_cache_shrink(struct kmem_cache *);
void kmem_cache_free(struct kmem_cache *, void *);
unsigned int kmem_cache_size(struct kmem_cache *);
#define KMEM_CACHE(__struct, __flags) kmem_cache_create(#__struct,\
sizeof(struct __struct), __alignof__(struct __struct),\
(__flags), NULL)
#define KMALLOC_SHIFT_HIGH ((MAX_ORDER + PAGE_SHIFT - 1) <= 25 ? \
(MAX_ORDER + PAGE_SHIFT - 1) : 25)
#define KMALLOC_MAX_SIZE (1UL << KMALLOC_SHIFT_HIGH)
#define KMALLOC_MAX_ORDER (KMALLOC_SHIFT_HIGH - PAGE_SHIFT)
#ifdef ARCH_DMA_MINALIGN
#define ARCH_KMALLOC_MINALIGN ARCH_DMA_MINALIGN
#else
#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long long)
#endif
#ifndef ARCH_SLAB_MINALIGN
#define ARCH_SLAB_MINALIGN __alignof__(unsigned long long)
#endif
void * __must_check __krealloc(const void *, size_t, gfp_t);
void * __must_check krealloc(const void *, size_t, gfp_t);
void kfree(const void *);
void kzfree(const void *);
size_t ksize(const void *);
#ifdef CONFIG_SLUB
#include <linux/slub_def.h>
#elif defined(CONFIG_SLOB)
#include <linux/slob_def.h>
#else
#include <linux/slab_def.h>
#endif
static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags)
{
if (size != 0 && n > SIZE_MAX / size)
return NULL;
return __kmalloc(n * size, flags);
}
static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
{
return kmalloc_array(n, size, flags | __GFP_ZERO);
}
#if !defined(CONFIG_NUMA) && !defined(CONFIG_SLOB)
static inline void *kmalloc_node(size_t size, gfp_t flags, int node)
{
return kmalloc(size, flags);
}
static inline void *__kmalloc_node(size_t size, gfp_t flags, int node)
{
return __kmalloc(size, flags);
}
void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
static inline void *kmem_cache_alloc_node(struct kmem_cache *cachep,
gfp_t flags, int node)
{
return kmem_cache_alloc(cachep, flags);
}
#endif
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || \
(defined(CONFIG_SLAB) && defined(CONFIG_TRACING))
extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long);
#define kmalloc_track_caller(size, flags) \
__kmalloc_track_caller(size, flags, _RET_IP_)
#else
#define kmalloc_track_caller(size, flags) \
__kmalloc(size, flags)
#endif
#ifdef CONFIG_NUMA
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || \
(defined(CONFIG_SLAB) && defined(CONFIG_TRACING))
extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long);
#define kmalloc_node_track_caller(size, flags, node) \
__kmalloc_node_track_caller(size, flags, node, \
_RET_IP_)
#else
#define kmalloc_node_track_caller(size, flags, node) \
__kmalloc_node(size, flags, node)
#endif
#else
#define kmalloc_node_track_caller(size, flags, node) \
kmalloc_track_caller(size, flags)
#endif
static inline void *kmem_cache_zalloc(struct kmem_cache *k, gfp_t flags)
{
return kmem_cache_alloc(k, flags | __GFP_ZERO);
}
static inline void *kzalloc(size_t size, gfp_t flags)
{
return kmalloc(size, flags | __GFP_ZERO);
}
static inline void *kzalloc_node(size_t size, gfp_t flags, int node)
{
return kmalloc_node(size, flags | __GFP_ZERO, node);
}
void __init kmem_cache_init_late(void);
#endif
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