Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755706Ab2FWGTX (ORCPT ); Sat, 23 Jun 2012 02:19:23 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:49137 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754834Ab2FWGTW (ORCPT ); Sat, 23 Jun 2012 02:19:22 -0400 From: Wanpeng Li To: linux-mm@kvack.org Cc: Michal Hocko , Johannes Weiner , Balbir Singh , KAMEZAWA Hiroyuki , Andrew Morton , Mel Gorman , Minchan Kim , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Gavin Shan , Wanpeng Li Subject: [PATCH 5/6] memcg: optimize memcg_get_hierarchical_limit Date: Sat, 23 Jun 2012 14:18:17 +0800 Message-Id: <1340432297-5362-1-git-send-email-liwp.linux@gmail.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 987 Lines: 32 From: Wanpeng Li Optimize memcg_get_hierarchical_limit to save cpu cycle. Signed-off-by: Wanpeng Li --- mm/memcontrol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index c821e36..1ca79e2 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3917,9 +3917,9 @@ static void memcg_get_hierarchical_limit(struct mem_cgroup *memcg, min_limit = res_counter_read_u64(&memcg->res, RES_LIMIT); min_memsw_limit = res_counter_read_u64(&memcg->memsw, RES_LIMIT); - cgroup = memcg->css.cgroup; if (!memcg->use_hierarchy) goto out; + cgroup = memcg->css.cgroup; while (cgroup->parent) { cgroup = cgroup->parent; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/