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 struct kmem_cache *cs_dmacachep;
24 extern struct cache_sizes malloc_sizes[];
26 static inline void *kmalloc(size_t size, gfp_t flags)
28 if (__builtin_constant_p(size)) {
35 #include "kmalloc_sizes.h"
38 extern void __you_cannot_kmalloc_that_much(void);
39 __you_cannot_kmalloc_that_much();
42 return kmem_cache_alloc((flags & GFP_DMA) ?
43 malloc_sizes[i].cs_dmacachep :
44 malloc_sizes[i].cs_cachep, flags);
46 return __kmalloc(size, flags);
49 static inline void *kzalloc(size_t size, gfp_t flags)
51 if (__builtin_constant_p(size)) {
58 #include "kmalloc_sizes.h"
61 extern void __you_cannot_kzalloc_that_much(void);
62 __you_cannot_kzalloc_that_much();
65 return kmem_cache_zalloc((flags & GFP_DMA) ?
66 malloc_sizes[i].cs_dmacachep :
67 malloc_sizes[i].cs_cachep, flags);
69 return __kzalloc(size, flags);
73 extern void *__kmalloc_node(size_t size, gfp_t flags, int node);
75 static inline void *kmalloc_node(size_t size, gfp_t flags, int node)
77 if (__builtin_constant_p(size)) {
84 #include "kmalloc_sizes.h"
87 extern void __you_cannot_kmalloc_that_much(void);
88 __you_cannot_kmalloc_that_much();
91 return kmem_cache_alloc_node((flags & GFP_DMA) ?
92 malloc_sizes[i].cs_dmacachep :
93 malloc_sizes[i].cs_cachep, flags, node);
95 return __kmalloc_node(size, flags, node);
98 #endif /* CONFIG_NUMA */
100 #endif /* _LINUX_SLAB_DEF_H */