From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760797AbaGEKrR (ORCPT ); Sat, 5 Jul 2014 06:47:17 -0400 Received: from terminus.zytor.com ([198.137.202.10]:58120 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755590AbaGEKrM (ORCPT ); Sat, 5 Jul 2014 06:47:12 -0400 Date: Sat, 5 Jul 2014 03:46:12 -0700 From: tip-bot for Kirill Tkhai Message-ID: Cc: linux-kernel@vger.kernel.org, bsegall@google.com, ktkhai@parallels.com, hpa@zytor.com, mingo@kernel.org, torvalds@linux-foundation.org, peterz@infradead.org, pjt@google.com, umgwanakikbuti@gmail.com, khorenko@parallels.com, srikar@linux.vnet.ibm.com, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, ktkhai@parallels.com, bsegall@google.com, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, pjt@google.com, peterz@infradead.org, khorenko@parallels.com, umgwanakikbuti@gmail.com, srikar@linux.vnet.ibm.com, tglx@linutronix.de In-Reply-To: <1403684388.3462.43.camel@tkhai> References: <1403684388.3462.43.camel@tkhai> To: linux-tip-commits@vger.kernel.org Subject: [tip:sched/core] sched/rt: Enqueue just unthrottled rt_rq back on the stack in __disable_runtime() Git-Commit-ID: 99b625670f1447ecf0739161efbe7f2f43c0e0b6 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 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 99b625670f1447ecf0739161efbe7f2f43c0e0b6 Gitweb: http://git.kernel.org/tip/99b625670f1447ecf0739161efbe7f2f43c0e0b6 Author: Kirill Tkhai AuthorDate: Wed, 25 Jun 2014 12:19:48 +0400 Committer: Ingo Molnar CommitDate: Sat, 5 Jul 2014 11:17:44 +0200 sched/rt: Enqueue just unthrottled rt_rq back on the stack in __disable_runtime() Make rt_rq available for pick_next_task(). Otherwise, their tasks stay prisoned long time till dead cpu becomes alive again. Reviewed-by: Srikar Dronamraju Signed-off-by: Kirill Tkhai CC: Konstantin Khorenko CC: Ben Segall CC: Paul Turner CC: Mike Galbraith Cc: Linus Torvalds Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1403684388.3462.43.camel@tkhai Signed-off-by: Ingo Molnar --- kernel/sched/rt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index a490831..671a8b5 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -740,6 +740,9 @@ balanced: rt_rq->rt_throttled = 0; raw_spin_unlock(&rt_rq->rt_runtime_lock); raw_spin_unlock(&rt_b->rt_runtime_lock); + + /* Make rt_rq available for pick_next_task() */ + sched_rt_rq_enqueue(rt_rq); } }