diff options
| author | Christoph Lameter <clameter@sgi.com> | 2006-12-13 00:34:23 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-13 09:05:49 -0800 |
| commit | 2e892f43ccb602e8ffad73396a1000f2040c9e0b (patch) | |
| tree | 2f799810eccebeb5d432daed93ed9654238887b6 /mm | |
| parent | 872225ca77519a243d7e19270b062b0ac53418d8 (diff) | |
[PATCH] Cleanup slab headers / API to allow easy addition of new slab allocators
This is a response to an earlier discussion on linux-mm about splitting
slab.h components per allocator. Patch is against 2.6.19-git11. See
http://marc.theaimsgroup.com/?l=linux-mm&m=116469577431008&w=2
This patch cleans up the slab header definitions. We define the common
functions of slob and slab in slab.h and put the extra definitions needed
for slab's kmalloc implementations in <linux/slab_def.h>. In order to get
a greater set of common functions we add several empty functions to slob.c
and also rename slob's kmalloc to __kmalloc.
Slob does not need any special definitions since we introduce a fallback
case. If there is no need for a slab implementation to provide its own
kmalloc mess^H^H^Hacros then we simply fall back to __kmalloc functions.
That is sufficient for SLOB.
Sort the function in slab.h according to their functionality. First the
functions operating on struct kmem_cache * then the kmalloc related
functions followed by special debug and fallback definitions.
Also redo a lot of comments.
Signed-off-by: Christoph Lameter <clameter@sgi.com>?
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slob.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/mm/slob.c b/mm/slob.c index 542394184a5..b90091c4b08 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -157,7 +157,7 @@ static int fastcall find_order(int size) return order; } -void *kmalloc(size_t size, gfp_t gfp) +void *__kmalloc(size_t size, gfp_t gfp) { slob_t *m; bigblock_t *bb; @@ -186,8 +186,7 @@ void *kmalloc(size_t size, gfp_t gfp) slob_free(bb, sizeof(bigblock_t)); return 0; } - -EXPORT_SYMBOL(kmalloc); +EXPORT_SYMBOL(__kmalloc); void kfree(const void *block) { @@ -329,6 +328,17 @@ EXPORT_SYMBOL(kmem_cache_name); static struct timer_list slob_timer = TIMER_INITIALIZER( (void (*)(unsigned long))kmem_cache_init, 0, 0); +int kmem_cache_shrink(struct kmem_cache *d) +{ + return 0; +} +EXPORT_SYMBOL(kmem_cache_shrink); + +int kmem_ptr_validate(struct kmem_cache *a, void *b) +{ + return 0; +} + void kmem_cache_init(void) { void *p = slob_alloc(PAGE_SIZE, 0, PAGE_SIZE-1); |