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slab: Common definition for the array of kmalloc caches

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Have a common definition fo the kmalloc cache arrays in
SLAB and SLUB

Acked-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Christoph Lameter 2013-01-10 19:12:17 +00:00 committed by Pekka Enberg
parent 95a05b428c
commit 9425c58e54
6 changed files with 13 additions and 24 deletions
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5
include/linux/slab.h
View File

@ -206,6 +206,11 @@ struct kmem_cache {
#define KMALLOC_MIN_SIZE (1 << KMALLOC_SHIFT_LOW)
#endif
extern struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1];
#ifdef CONFIG_ZONE_DMA
extern struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
#endif
/*
* Figure out which kmalloc slab an allocation of a certain size
* belongs to.

3
include/linux/slab_def.h
View File

@ -102,9 +102,6 @@ struct kmem_cache {
*/
};
extern struct kmem_cache *kmalloc_caches[PAGE_SHIFT + MAX_ORDER];
extern struct kmem_cache *kmalloc_dma_caches[PAGE_SHIFT + MAX_ORDER];
void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
void *__kmalloc(size_t size, gfp_t flags);

6
include/linux/slub_def.h
View File

@ -122,12 +122,6 @@ struct kmem_cache {
#define SLUB_DMA (__force gfp_t)0
#endif
/*
* We keep the general caches in an array of slab caches that are used for
* 2^x bytes of allocations.
*/
extern struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1];
/*
* Find the slab cache for a given combination of allocation flags and size.
*

8
mm/slab.c
View File

@ -318,14 +318,6 @@ static void free_block(struct kmem_cache *cachep, void **objpp, int len,
static int enable_cpucache(struct kmem_cache *cachep, gfp_t gfp);
static void cache_reap(struct work_struct *unused);
struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1];
EXPORT_SYMBOL(kmalloc_caches);
#ifdef CONFIG_ZONE_DMA
struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
EXPORT_SYMBOL(kmalloc_dma_caches);
#endif
static int slab_early_init = 1;
#define INDEX_AC kmalloc_index(sizeof(struct arraycache_init))

8
mm/slab_common.c
View File

@ -319,6 +319,14 @@ struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size,
return s;
}
struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1];
EXPORT_SYMBOL(kmalloc_caches);
#ifdef CONFIG_ZONE_DMA
struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
EXPORT_SYMBOL(kmalloc_dma_caches);
#endif
#endif /* !CONFIG_SLOB */

7
mm/slub.c
View File

@ -3174,13 +3174,6 @@ int __kmem_cache_shutdown(struct kmem_cache *s)
* Kmalloc subsystem
*******************************************************************/
struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1];
EXPORT_SYMBOL(kmalloc_caches);
#ifdef CONFIG_ZONE_DMA
static struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
#endif
static int __init setup_slub_min_order(char *str)
{
get_option(&str, &slub_min_order);