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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2014-10-09 15:26:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-09 22:25:51 -0400
commit423c929cbbecc60e9c407f9048e58f5422f7995d (patch)
tree34f427883c02de08d9819db705c91ec418411643 /mm/slab.h
parent9163582c3f22cfba90a78749751ac70b127a9167 (diff)
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mm/slab_common: commonize slab merge logic
Slab merge is good feature to reduce fragmentation. Now, it is only applied to SLUB, but, it would be good to apply it to SLAB. This patch is preparation step to apply slab merge to SLAB by commonizing slab merge logic. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.h')
-rw-r--r--mm/slab.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/mm/slab.h b/mm/slab.h
index 6599f2084e80..c44d28b60609 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -88,15 +88,30 @@ extern void create_boot_cache(struct kmem_cache *, const char *name,
size_t size, unsigned long flags);
struct mem_cgroup;
+
+int slab_unmergeable(struct kmem_cache *s);
+struct kmem_cache *find_mergeable(size_t size, size_t align,
+ unsigned long flags, const char *name, void (*ctor)(void *));
#ifdef CONFIG_SLUB
struct kmem_cache *
__kmem_cache_alias(const char *name, size_t size, size_t align,
unsigned long flags, void (*ctor)(void *));
+
+unsigned long kmem_cache_flags(unsigned long object_size,
+ unsigned long flags, const char *name,
+ void (*ctor)(void *));
#else
static inline struct kmem_cache *
__kmem_cache_alias(const char *name, size_t size, size_t align,
unsigned long flags, void (*ctor)(void *))
{ return NULL; }
+
+static inline unsigned long kmem_cache_flags(unsigned long object_size,
+ unsigned long flags, const char *name,
+ void (*ctor)(void *))
+{
+ return flags;
+}
#endif