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authorGlauber Costa <glommer@parallels.com>2012-12-19 02:22:48 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-19 03:02:14 +0400
commitd79923fad95b0cdf7770e024677180c734cb7148 (patch)
treee7cf6e9fb151d3c0d5c773fa1ba723a71b1e9329 /mm/slub.c
parentb9ce5ef49f00daf2254c6953c8d31f79aabccd34 (diff)
downloadlinux-d79923fad95b0cdf7770e024677180c734cb7148.tar.xz
sl[au]b: allocate objects from memcg cache
We are able to match a cache allocation to a particular memcg. If the task doesn't change groups during the allocation itself - a rare event, this will give us a good picture about who is the first group to touch a cache page. This patch uses the now available infrastructure by calling memcg_kmem_get_cache() before all the cache allocations. Signed-off-by: Glauber Costa <glommer@parallels.com> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Frederic Weisbecker <fweisbec@redhat.com> Cc: Greg Thelen <gthelen@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: JoonSoo Kim <js1304@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Michal Hocko <mhocko@suse.cz> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Rik van Riel <riel@redhat.com> Cc: Suleiman Souhlal <suleiman@google.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slub.c')
-rw-r--r--mm/slub.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 6d5f2305d7a4..ef39e872b8eb 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1405,7 +1405,7 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
reset_page_mapcount(page);
if (current->reclaim_state)
current->reclaim_state->reclaimed_slab += pages;
- __free_pages(page, order);
+ __free_memcg_kmem_pages(page, order);
}
#define need_reserve_slab_rcu \
@@ -2323,6 +2323,7 @@ static __always_inline void *slab_alloc_node(struct kmem_cache *s,
if (slab_pre_alloc_hook(s, gfpflags))
return NULL;
+ s = memcg_kmem_get_cache(s, gfpflags);
redo:
/*
@@ -3284,7 +3285,7 @@ static void *kmalloc_large_node(size_t size, gfp_t flags, int node)
struct page *page;
void *ptr = NULL;
- flags |= __GFP_COMP | __GFP_NOTRACK;
+ flags |= __GFP_COMP | __GFP_NOTRACK | __GFP_KMEMCG;
page = alloc_pages_node(node, flags, get_order(size));
if (page)
ptr = page_address(page);
@@ -3390,7 +3391,7 @@ void kfree(const void *x)
if (unlikely(!PageSlab(page))) {
BUG_ON(!PageCompound(page));
kmemleak_free(x);
- __free_pages(page, compound_order(page));
+ __free_memcg_kmem_pages(page, compound_order(page));
return;
}
slab_free(page->slab_cache, page, object, _RET_IP_);