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[PATCH] mempool: add kzalloc allocator

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Add another allocator to the common mempool code: a kzalloc/kfree allocator

This will be used by the next patch in the series to replace a mempool-backed
kzalloc allocator.  It is also very likely that there will be more users in
the future.

Signed-off-by: Matthew Dobson <colpatch@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Matthew Dobson 2006-03-26 01:37:48 -08:00 committed by Linus Torvalds
parent 0eaae62aba
commit f183323d38
2 changed files with 16 additions and 3 deletions
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10
include/linux/mempool.h
View file

@ -39,16 +39,22 @@ void *mempool_alloc_slab(gfp_t gfp_mask, void *pool_data);
void mempool_free_slab(void *element, void *pool_data);
/*
* A mempool_alloc_t and mempool_free_t to kmalloc the amount of memory
* specified by pool_data
* 2 mempool_alloc_t's and a mempool_free_t to kmalloc/kzalloc and kfree
* the amount of memory specified by pool_data
*/
void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data);
void *mempool_kzalloc(gfp_t gfp_mask, void *pool_data);
void mempool_kfree(void *element, void *pool_data);
static inline mempool_t *mempool_create_kmalloc_pool(int min_nr, size_t size)
{
return mempool_create(min_nr, mempool_kmalloc, mempool_kfree,
(void *) size);
}
static inline mempool_t *mempool_create_kzalloc_pool(int min_nr, size_t size)
{
return mempool_create(min_nr, mempool_kzalloc, mempool_kfree,
(void *) size);
}
/*
* A mempool_alloc_t and mempool_free_t for a simple page allocator that

9
mm/mempool.c
View file

@ -296,11 +296,18 @@ EXPORT_SYMBOL(mempool_free_slab);
*/
void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data)
{
size_t size = (size_t) pool_data;
size_t size = (size_t)(long)pool_data;
return kmalloc(size, gfp_mask);
}
EXPORT_SYMBOL(mempool_kmalloc);
void *mempool_kzalloc(gfp_t gfp_mask, void *pool_data)
{
size_t size = (size_t) pool_data;
return kzalloc(size, gfp_mask);
}
EXPORT_SYMBOL(mempool_kzalloc);
void mempool_kfree(void *element, void *pool_data)
{
kfree(element);