From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753487AbaJCF3D (ORCPT ); Fri, 3 Oct 2014 01:29:03 -0400 Received: from terminus.zytor.com ([198.137.202.10]:60872 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753298AbaJCF27 (ORCPT ); Fri, 3 Oct 2014 01:28:59 -0400 Date: Thu, 2 Oct 2014 22:28:07 -0700 From: tip-bot for Kirill Tkhai Message-ID: Cc: linux-kernel@vger.kernel.org, ktkhai@parallels.com, hpa@zytor.com, mingo@kernel.org, peterz@infradead.org, tglx@linutronix.de, juri.lelli@gmail.com Reply-To: mingo@kernel.org, hpa@zytor.com, ktkhai@parallels.com, linux-kernel@vger.kernel.org, peterz@infradead.org, tglx@linutronix.de, juri.lelli@gmail.com In-Reply-To: <20140930210441.5258.55054.stgit@localhost> References: <20140930210441.5258.55054.stgit@localhost> To: linux-tip-commits@vger.kernel.org Subject: [tip:sched/core] sched/fair: Delete resched_cpu() from idle_balance() Git-Commit-ID: 10a12983b3d437a6998b3845870e52c1c752c101 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: 10a12983b3d437a6998b3845870e52c1c752c101 Gitweb: http://git.kernel.org/tip/10a12983b3d437a6998b3845870e52c1c752c101 Author: Kirill Tkhai AuthorDate: Wed, 1 Oct 2014 01:04:44 +0400 Committer: Ingo Molnar CommitDate: Fri, 3 Oct 2014 05:46:56 +0200 sched/fair: Delete resched_cpu() from idle_balance() We already reschedule env.dst_cpu in attach_tasks()->check_preempt_curr() if this is necessary. Furthermore, a higher priority class task may be current on dest rq, we shouldn't disturb it. Signed-off-by: Kirill Tkhai Cc: Juri Lelli Signed-off-by: Peter Zijlstra (Intel) Link: http://lkml.kernel.org/r/20140930210441.5258.55054.stgit@localhost Signed-off-by: Ingo Molnar --- kernel/sched/fair.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index dfdcbfd..bd61cff 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -6701,12 +6701,6 @@ more_balance: local_irq_restore(flags); - /* - * some other cpu did the load balance for us. - */ - if (cur_ld_moved && env.dst_cpu != smp_processor_id()) - resched_cpu(env.dst_cpu); - if (env.flags & LBF_NEED_BREAK) { env.flags &= ~LBF_NEED_BREAK; goto more_balance;