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authorVladimir Davydov <vdavydov@parallels.com>2014-06-04 16:08:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 16:54:06 -0700
commit073ee1c6cd11cd190f4d0da84d9b4ba79d7b9e70 (patch)
treeb15246321eb6b1e4faea04a46f6ea998d608044e /mm/slab_common.c
parentb5ffc8560cf758422e85b786cca32cd7e1513a7f (diff)
downloadop-kernel-dev-073ee1c6cd11cd190f4d0da84d9b4ba79d7b9e70.zip
op-kernel-dev-073ee1c6cd11cd190f4d0da84d9b4ba79d7b9e70.tar.gz
memcg: get rid of memcg_create_cache_name
Instead of calling back to memcontrol.c from kmem_cache_create_memcg in order to just create the name of a per memcg cache, let's allocate it in place. We only need to pass the memcg name to kmem_cache_create_memcg for that - everything else can be done in slab_common.c. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab_common.c')
-rw-r--r--mm/slab_common.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 7e348cf..3217561 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -264,13 +264,15 @@ EXPORT_SYMBOL(kmem_cache_create);
* kmem_cache_create_memcg - Create a cache for a memory cgroup.
* @memcg: The memory cgroup the new cache is for.
* @root_cache: The parent of the new cache.
+ * @memcg_name: The name of the memory cgroup (used for naming the new cache).
*
* This function attempts to create a kmem cache that will serve allocation
* requests going from @memcg to @root_cache. The new cache inherits properties
* from its parent.
*/
struct kmem_cache *kmem_cache_create_memcg(struct mem_cgroup *memcg,
- struct kmem_cache *root_cache)
+ struct kmem_cache *root_cache,
+ const char *memcg_name)
{
struct kmem_cache *s = NULL;
char *cache_name;
@@ -280,7 +282,8 @@ struct kmem_cache *kmem_cache_create_memcg(struct mem_cgroup *memcg,
mutex_lock(&slab_mutex);
- cache_name = memcg_create_cache_name(memcg, root_cache);
+ cache_name = kasprintf(GFP_KERNEL, "%s(%d:%s)", root_cache->name,
+ memcg_cache_id(memcg), memcg_name);
if (!cache_name)
goto out_unlock;
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