Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[linux-2.6] / include / linux / slab.h

diff --git a/include/linux/slab.h b/include/linux/slab.h
index f88e08a5802c5b7d9ecca38a9eaf07fe21d8b40a..9dc93163e0651fd631790336cc2200c620075bf3 100644 (file)
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -11,7 +11,6 @@
 
 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>
@@ -64,6 +63,7 @@ extern kmem_cache_t *kmem_cache_create(const char *, size_t, size_t, unsigned lo
 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_zalloc(struct kmem_cache *, 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 *);
@@ -109,7 +109,30 @@ found:
        return __kmalloc(size, flags);
 }
 
-extern void *kzalloc(size_t, gfp_t);
+extern void *__kzalloc(size_t, gfp_t);
+
+static inline void *kzalloc(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_kzalloc_that_much(void);
+                       __you_cannot_kzalloc_that_much();
+               }
+found:
+               return kmem_cache_zalloc((flags & GFP_DMA) ?
+                       malloc_sizes[i].cs_dmacachep :
+                       malloc_sizes[i].cs_cachep, flags);
+       }
+       return __kzalloc(size, flags);
+}
 
 /**
  * kcalloc - allocate memory for an array. The memory is set to zero.
@@ -126,6 +149,7 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 
 extern void kfree(const void *);
 extern unsigned int ksize(const void *);
+extern int slab_is_available(void);
 
 #ifdef CONFIG_NUMA
 extern void *kmem_cache_alloc_node(kmem_cache_t *, gfp_t flags, int node);
@@ -156,17 +180,18 @@ struct kmem_cache *kmem_cache_create(const char *c, size_t, size_t,
        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_zalloc(struct kmem_cache *, gfp_t);
 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 *__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);
+       return __kzalloc(n * size, flags);
 }
 
 #define kmem_cache_shrink(d) (0)
@@ -174,6 +199,7 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 #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)
+#define kzalloc(s, f) __kzalloc(s, f)
 #define ____kmalloc kmalloc
 
 #endif /* CONFIG_SLOB */
@@ -184,7 +210,6 @@ 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;