From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756554Ab3AXUhp (ORCPT ); Thu, 24 Jan 2013 15:37:45 -0500 Received: from terminus.zytor.com ([198.137.202.10]:34873 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756310Ab3AXUg7 (ORCPT ); Thu, 24 Jan 2013 15:36:59 -0500 Date: Thu, 24 Jan 2013 12:36:40 -0800 From: tip-bot for Kirill Tkhai Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, rostedt@goodmis.org, peterz@infradead.org, tkhai@yandex.ru, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, rostedt@goodmis.org, peterz@infradead.org, tkhai@yandex.ru, tglx@linutronix.de In-Reply-To: <118761353614535@web28f.yandex.ru> References: <118761353614535@web28f.yandex.ru> To: linux-tip-commits@vger.kernel.org Subject: [tip:sched/core] sched/rt: Add reschedule check to switched_from_rt() Git-Commit-ID: 1158ddb55416855fd17abe3214298f736f00426a X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (terminus.zytor.com [127.0.0.1]); Thu, 24 Jan 2013 12:36:46 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 1158ddb55416855fd17abe3214298f736f00426a Gitweb: http://git.kernel.org/tip/1158ddb55416855fd17abe3214298f736f00426a Author: Kirill Tkhai AuthorDate: Fri, 23 Nov 2012 00:02:15 +0400 Committer: Ingo Molnar CommitDate: Thu, 24 Jan 2013 17:14:30 +0100 sched/rt: Add reschedule check to switched_from_rt() Reschedule rq->curr if the first RT task has just been pulled to the rq. Signed-off-by: Kirill V Tkhai Acked-by: Steven Rostedt Cc: Peter Zijlstra Cc: Tkhai Kirill Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/118761353614535@web28f.yandex.ru Signed-off-by: Ingo Molnar --- kernel/sched/rt.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index 418feb0..29bda5b 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -1889,8 +1889,11 @@ static void switched_from_rt(struct rq *rq, struct task_struct *p) * we may need to handle the pulling of RT tasks * now. */ - if (p->on_rq && !rq->rt.rt_nr_running) - pull_rt_task(rq); + if (!p->on_rq || rq->rt.rt_nr_running) + return; + + if (pull_rt_task(rq)) + resched_task(rq->curr); } void init_sched_rt_class(void)