From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754951AbZGJKmZ (ORCPT ); Fri, 10 Jul 2009 06:42:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754750AbZGJKlw (ORCPT ); Fri, 10 Jul 2009 06:41:52 -0400 Received: from hera.kernel.org ([140.211.167.34]:53260 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754767AbZGJKlu (ORCPT ); Fri, 10 Jul 2009 06:41:50 -0400 Date: Fri, 10 Jul 2009 10:41:14 GMT From: tip-bot for Lucas De Marchi To: linux-tip-commits@vger.kernel.org Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, a.p.zijlstra@chello.nl, lucas.de.marchi@gmail.com, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, lucas.de.marchi@gmail.com, a.p.zijlstra@chello.nl, tglx@linutronix.de, mingo@elte.hu In-Reply-To: <193b0f820907090457s7a3662f4gcdecdc22fcae857b@mail.gmail.com> References: <193b0f820907090457s7a3662f4gcdecdc22fcae857b@mail.gmail.com> Subject: [tip:sched/urgent] sched: Reset sched stats on fork() Message-ID: Git-Commit-ID: 7793527b90d9418211f4fe8464cc1dcb1631ea1b X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (hera.kernel.org [127.0.0.1]); Fri, 10 Jul 2009 10:41:15 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 7793527b90d9418211f4fe8464cc1dcb1631ea1b Gitweb: http://git.kernel.org/tip/7793527b90d9418211f4fe8464cc1dcb1631ea1b Author: Lucas De Marchi AuthorDate: Thu, 9 Jul 2009 13:57:20 +0200 Committer: Ingo Molnar CommitDate: Fri, 10 Jul 2009 10:43:29 +0200 sched: Reset sched stats on fork() The sched_stat fields are currently not reset upon fork. Ingo's recent commit 6c594c21fcb02c662f11c97be4d7d2b73060a205 did reset nr_migrations, but it didn't reset any of the others. This patch resets all sched_stat fields on fork. Signed-off-by: Lucas De Marchi Signed-off-by: Peter Zijlstra LKML-Reference: <193b0f820907090457s7a3662f4gcdecdc22fcae857b@mail.gmail.com> Signed-off-by: Ingo Molnar --- kernel/sched.c | 40 +++++++++++++++++++++++++++++++--------- 1 files changed, 31 insertions(+), 9 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index a17f3d9..c4549bd 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -2572,15 +2572,37 @@ static void __sched_fork(struct task_struct *p) p->se.avg_wakeup = sysctl_sched_wakeup_granularity; #ifdef CONFIG_SCHEDSTATS - p->se.wait_start = 0; - p->se.sum_sleep_runtime = 0; - p->se.sleep_start = 0; - p->se.block_start = 0; - p->se.sleep_max = 0; - p->se.block_max = 0; - p->se.exec_max = 0; - p->se.slice_max = 0; - p->se.wait_max = 0; + p->se.wait_start = 0; + p->se.wait_max = 0; + p->se.wait_count = 0; + p->se.wait_sum = 0; + + p->se.sleep_start = 0; + p->se.sleep_max = 0; + p->se.sum_sleep_runtime = 0; + + p->se.block_start = 0; + p->se.block_max = 0; + p->se.exec_max = 0; + p->se.slice_max = 0; + + p->se.nr_migrations_cold = 0; + p->se.nr_failed_migrations_affine = 0; + p->se.nr_failed_migrations_running = 0; + p->se.nr_failed_migrations_hot = 0; + p->se.nr_forced_migrations = 0; + p->se.nr_forced2_migrations = 0; + + p->se.nr_wakeups = 0; + p->se.nr_wakeups_sync = 0; + p->se.nr_wakeups_migrate = 0; + p->se.nr_wakeups_local = 0; + p->se.nr_wakeups_remote = 0; + p->se.nr_wakeups_affine = 0; + p->se.nr_wakeups_affine_attempts = 0; + p->se.nr_wakeups_passive = 0; + p->se.nr_wakeups_idle = 0; + #endif INIT_LIST_HEAD(&p->rt.run_list);