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authorVladimir Davydov <vdavydov@parallels.com>2014-04-08 02:39:24 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-08 03:36:12 +0400
commit5722d094ad2b56fa2c1cb3adaf40071a55bbf242 (patch)
treefbae9cdc8bf4d92d2ac268cf761b5f25c5ad6ef9 /include/linux/memcontrol.h
parenta44cb9449182fd7b25bf5f1cc38b7f19e0b96f6d (diff)
downloadlinux-5722d094ad2b56fa2c1cb3adaf40071a55bbf242.tar.xz
memcg, slab: cleanup memcg cache creation
This patch cleans up the memcg cache creation path as follows: - Move memcg cache name creation to a separate function to be called from kmem_cache_create_memcg(). This allows us to get rid of the mutex protecting the temporary buffer used for the name formatting, because the whole cache creation path is protected by the slab_mutex. - Get rid of memcg_create_kmem_cache(). This function serves as a proxy to kmem_cache_create_memcg(). After separating the cache name creation path, it would be reduced to a function call, so let's inline it. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: David Rientjes <rientjes@google.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Glauber Costa <glommer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/memcontrol.h')
-rw-r--r--include/linux/memcontrol.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 96f3fc87ab96..ab7f02884983 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -491,6 +491,9 @@ void __memcg_kmem_commit_charge(struct page *page,
void __memcg_kmem_uncharge_pages(struct page *page, int order);
int memcg_cache_id(struct mem_cgroup *memcg);
+
+char *memcg_create_cache_name(struct mem_cgroup *memcg,
+ struct kmem_cache *root_cache);
int memcg_alloc_cache_params(struct mem_cgroup *memcg, struct kmem_cache *s,
struct kmem_cache *root_cache);
void memcg_free_cache_params(struct kmem_cache *s);
@@ -635,6 +638,12 @@ static inline int memcg_cache_id(struct mem_cgroup *memcg)
return -1;
}
+static inline char *memcg_create_cache_name(struct mem_cgroup *memcg,
+ struct kmem_cache *root_cache)
+{
+ return NULL;
+}
+
static inline int memcg_alloc_cache_params(struct mem_cgroup *memcg,
struct kmem_cache *s, struct kmem_cache *root_cache)
{