From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754004AbcBAWsA (ORCPT ); Mon, 1 Feb 2016 17:48:00 -0500 Received: from mga14.intel.com ([192.55.52.115]:6881 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753545AbcBAWr7 (ORCPT ); Mon, 1 Feb 2016 17:47:59 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,382,1449561600"; d="scan'208";a="903325786" Message-ID: <1454366879.21738.29.camel@schen9-desk2.jf.intel.com> Subject: [PATCH] sched: Remove unnecessary numa dequeue update from non-SMP kernel From: Tim Chen To: Peter Zijlstra , Ingo Molnar Cc: linux-kernel@vger.kernel.org Date: Mon, 01 Feb 2016 14:47:59 -0800 Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.8.5 (3.8.5-2.fc19) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In account_entity_enqueue, we do not do account_numa_enqueue as NUMA balancing is not needed for non-SMP configured kernel. Hence, we should remove account_numa_dequeue from account_entity_dequeue for the non-SMP kernel. Signed-off-by: Tim Chen --- kernel/sched/fair.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 56b7d4b..6cbe2fb 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2405,10 +2405,12 @@ account_entity_dequeue(struct cfs_rq *cfs_rq, struct sched_entity *se) update_load_sub(&cfs_rq->load, se->load.weight); if (!parent_entity(se)) update_load_sub(&rq_of(cfs_rq)->load, se->load.weight); +#ifdef CONFIG_SMP if (entity_is_task(se)) { account_numa_dequeue(rq_of(cfs_rq), task_of(se)); list_del_init(&se->group_node); } +#endif cfs_rq->nr_running--; } -- 1.8.3.1