[PATCH 23/23] slub: create slabinfo file for memcg
From: Glauber Costa <hidden>
Date: 2012-04-22 23:57:02
Also in:
linux-mm, lkml
Subsystem:
memory management, slab allocator, the rest · Maintainers:
Andrew Morton, Vlastimil Babka, Harry Yoo, Linus Torvalds
This patch implements mem_cgroup_slabinfo() for the slub. With that, we can also probe the used caches for it. Signed-off-by: Glauber Costa <redacted> CC: Christoph Lameter <redacted> CC: Pekka Enberg <redacted> CC: Michal Hocko <redacted> CC: Kamezawa Hiroyuki <redacted> CC: Johannes Weiner <hannes@cmpxchg.org> CC: Suleiman Souhlal <redacted> --- mm/slub.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 1031d4d..495a4f1 100644
--- a/mm/slub.c
+++ b/mm/slub.c@@ -4150,6 +4150,33 @@ void kmem_cache_drop_ref(struct kmem_cache *s) int mem_cgroup_slabinfo(struct mem_cgroup *memcg, struct seq_file *m) { + struct kmem_cache *s; + int node; + unsigned long nr_objs = 0; + unsigned long nr_free = 0; + + seq_printf(m, "# name <active_objs> <num_objs> <objsize>\n"); + + down_read(&slub_lock); + list_for_each_entry(s, &slab_caches, list) { + if (s->memcg_params.memcg != memcg) + continue; + + for_each_online_node(node) { + struct kmem_cache_node *n = get_node(s, node); + + if (!n) + continue; + + nr_objs += atomic_long_read(&n->total_objects); + nr_free += count_partial(n, count_free); + } + + seq_printf(m, "%-17s %6lu %6lu %6u\n", s->name, + nr_objs - nr_free, nr_objs, s->size); + } + up_read(&slub_lock); + return 0; } #endif
--
1.7.7.6