From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756120Ab0C3JfO (ORCPT ); Tue, 30 Mar 2010 05:35:14 -0400 Received: from casper.infradead.org ([85.118.1.10]:44982 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752290Ab0C3JfL convert rfc822-to-8bit (ORCPT ); Tue, 30 Mar 2010 05:35:11 -0400 Subject: Re: scheduler bug: process running since 5124095h From: Peter Zijlstra To: Mike Galbraith Cc: Hidetoshi Seto , =?ISO-8859-1?Q?T=F6r=F6k?= Edwin , Ingo Molnar , Linux Kernel , Arjan van de Ven In-Reply-To: <1269940324.19286.16.camel@marge.simson.net> References: <4BADD408.8080609@gmail.com> <4BAF1802.8070002@gmail.com> <1269859960.6844.4.camel@marge.simson.net> <4BB09736.5010009@jp.fujitsu.com> <4BB1989D.4050809@jp.fujitsu.com> <1269939704.5109.513.camel@twins> <1269940324.19286.16.camel@marge.simson.net> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Tue, 30 Mar 2010 11:34:34 +0200 Message-ID: <1269941674.5109.514.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2010-03-30 at 11:12 +0200, Mike Galbraith wrote: > On Tue, 2010-03-30 at 11:01 +0200, Peter Zijlstra wrote: > > On Tue, 2010-03-30 at 15:22 +0900, Hidetoshi Seto wrote: > > > > > > [kernel/sched_debug.c] > > > void proc_sched_set_task(struct task_struct *p) > > > { > > > : > > > p->se.sum_exec_runtime = 0; > > > p->se.prev_sum_exec_runtime = 0; > > > p->nvcsw = 0; > > > p->nivcsw = 0; > > > } > > > > Urgh, that code should really die, bugger that latencytop relies on that > > though. Arjan anything you can do to cure latencytop of this madness? > > I killed those 4 fields without _seeming_ to upset it. OK, if Arjan doesn't complain I'll take it ;-)