1 #ifndef _LINUX_SLAB_DEF_H
2 #define _LINUX_SLAB_DEF_H
5 * Definitions unique to the original Linux SLAB allocator.
7 * What we provide here is a way to optimize the frequent kmalloc
8 * calls in the kernel by selecting the appropriate general cache
9 * if kmalloc was called with a size that can be established at
13 #include <linux/init.h>
14 #include <asm/page.h> /* kmalloc_sizes.h needs PAGE_SIZE */
15 #include <asm/cache.h> /* kmalloc_sizes.h needs L1_CACHE_BYTES */
16 #include <linux/compiler.h>
18 /* Size description struct for general caches. */
21 struct kmem_cache *cs_cachep;
22 #ifdef CONFIG_ZONE_DMA
23 struct kmem_cache *cs_dmacachep;
26 extern struct cache_sizes malloc_sizes[];
28 void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
29 void *__kmalloc(size_t size, gfp_t flags);
31 static inline void *kmalloc(size_t size, gfp_t flags)
33 if (__builtin_constant_p(size)) {
44 #include "kmalloc_sizes.h"
47 extern void __you_cannot_kmalloc_that_much(void);
48 __you_cannot_kmalloc_that_much();
51 #ifdef CONFIG_ZONE_DMA
53 return kmem_cache_alloc(malloc_sizes[i].cs_dmacachep,
56 return kmem_cache_alloc(malloc_sizes[i].cs_cachep, flags);
58 return __kmalloc(size, flags);
62 extern void *__kmalloc_node(size_t size, gfp_t flags, int node);
63 extern void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
65 static inline void *kmalloc_node(size_t size, gfp_t flags, int node)
67 if (__builtin_constant_p(size)) {
78 #include "kmalloc_sizes.h"
81 extern void __you_cannot_kmalloc_that_much(void);
82 __you_cannot_kmalloc_that_much();
85 #ifdef CONFIG_ZONE_DMA
87 return kmem_cache_alloc_node(malloc_sizes[i].cs_dmacachep,
90 return kmem_cache_alloc_node(malloc_sizes[i].cs_cachep,
93 return __kmalloc_node(size, flags, node);
96 #endif /* CONFIG_NUMA */
98 #endif /* _LINUX_SLAB_DEF_H */