From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754068AbaIXH70 (ORCPT ); Wed, 24 Sep 2014 03:59:26 -0400 Received: from terminus.zytor.com ([198.137.202.10]:55538 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753157AbaIXH7X (ORCPT ); Wed, 24 Sep 2014 03:59:23 -0400 Date: Wed, 24 Sep 2014 00:57:53 -0700 From: tip-bot for Oleg Nesterov Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, torvalds@linux-foundation.org, peterz@infradead.org, riel@redhat.com, mgorman@suse.de, tglx@linutronix.de, oleg@redhat.com Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, peterz@infradead.org, riel@redhat.com, mgorman@suse.de, oleg@redhat.com, tglx@linutronix.de In-Reply-To: <20140921194743.GA30114@redhat.com> References: <20140921194743.GA30114@redhat.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:sched/core] sched/numa: Kill the wrong/ dead TASK_DEAD check in task_numa_fault() Git-Commit-ID: be34f0f3e6aed6e828a8059247d169d38da128d7 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: be34f0f3e6aed6e828a8059247d169d38da128d7 Gitweb: http://git.kernel.org/tip/be34f0f3e6aed6e828a8059247d169d38da128d7 Author: Oleg Nesterov AuthorDate: Sun, 21 Sep 2014 21:47:43 +0200 Committer: Ingo Molnar CommitDate: Wed, 24 Sep 2014 09:35:05 +0200 sched/numa: Kill the wrong/dead TASK_DEAD check in task_numa_fault() current->state == TASK_DEAD means that the task is doing its last schedule(), page fault is obviously impossible at this stage. Signed-off-by: Oleg Nesterov Acked-by: Mel Gorman Acked-by: Rik van Riel Cc: Peter Zijlstra Cc: Linus Torvalds Link: http://lkml.kernel.org/r/20140921194743.GA30114@redhat.com Signed-off-by: Ingo Molnar --- kernel/sched/fair.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 2a1e6ac..9ee3d4f 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1817,10 +1817,6 @@ void task_numa_fault(int last_cpupid, int mem_node, int pages, int flags) if (!p->mm) return; - /* Do not worry about placement if exiting */ - if (p->state == TASK_DEAD) - return; - /* Allocate buffer to track faults on a per-node basis */ if (unlikely(!p->numa_faults_memory)) { int size = sizeof(*p->numa_faults_memory) *