Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755540AbaJUMTG (ORCPT ); Tue, 21 Oct 2014 08:19:06 -0400 Received: from mail-pd0-f175.google.com ([209.85.192.175]:40186 "EHLO mail-pd0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755310AbaJUMTE (ORCPT ); Tue, 21 Oct 2014 08:19:04 -0400 Message-ID: <54464F30.9000706@gmail.com> Date: Tue, 21 Oct 2014 20:18:56 +0800 From: Wanpeng Li User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Wanpeng Li , Ingo Molnar , Peter Zijlstra CC: linux-kernel@vger.kernel.org, Juri Lelli Subject: Re: [PATCH 1/2] sched/deadline: don't need to check SD_BALANCE_FORK References: <1413253360-5318-1-git-send-email-wanpeng.li@linux.intel.com> In-Reply-To: <1413253360-5318-1-git-send-email-wanpeng.li@linux.intel.com> Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cc Juri, ?? 10/14/14, 10:22 AM, Wanpeng Li ะด??: > There is no need to do balance during fork since SCHED_DEADLINE > tasks can't fork. This patch avoid the SD_BALANCE_FORK check. > > Signed-off-by: Wanpeng Li > --- > kernel/sched/deadline.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c > index abfaf3d..f46b7f1 100644 > --- a/kernel/sched/deadline.c > +++ b/kernel/sched/deadline.c > @@ -914,7 +914,7 @@ select_task_rq_dl(struct task_struct *p, int cpu, int sd_flag, int flags) > struct task_struct *curr; > struct rq *rq; > > - if (sd_flag != SD_BALANCE_WAKE && sd_flag != SD_BALANCE_FORK) > + if (sd_flag != SD_BALANCE_WAKE) > goto out; > > rq = cpu_rq(cpu); -- 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/