From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750832AbWFXPkk (ORCPT ); Sat, 24 Jun 2006 11:40:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750840AbWFXPkj (ORCPT ); Sat, 24 Jun 2006 11:40:39 -0400 Received: from mail.gmx.de ([213.165.64.21]:31903 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S1750832AbWFXPkj (ORCPT ); Sat, 24 Jun 2006 11:40:39 -0400 X-Authenticated: #5039886 Date: Sat, 24 Jun 2006 17:40:37 +0200 From: =?iso-8859-1?Q?Bj=F6rn?= Steinbrink To: Mike Galbraith Cc: danial_thom@yahoo.com, linux-kernel@vger.kernel.org Subject: Re: Measuring tools - top and interrupts Message-ID: <20060624154037.GA2946@atjola.homenet> Mail-Followup-To: =?iso-8859-1?Q?Bj=F6rn?= Steinbrink , Mike Galbraith , danial_thom@yahoo.com, linux-kernel@vger.kernel.org References: <20060622165808.71704.qmail@web33303.mail.mud.yahoo.com> <1151128763.7795.9.camel@Homer.TheSimpsons.net> <1151130383.7545.1.camel@Homer.TheSimpsons.net> <20060624092156.GA13142@atjola.homenet> <1151142716.7797.10.camel@Homer.TheSimpsons.net> <1151149317.7646.14.camel@Homer.TheSimpsons.net> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1151149317.7646.14.camel@Homer.TheSimpsons.net> User-Agent: Mutt/1.5.11+cvs20060403 X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 2006.06.24 13:41:57 +0200, Mike Galbraith wrote: > On Sat, 2006-06-24 at 11:52 +0200, Mike Galbraith wrote: > > On Sat, 2006-06-24 at 11:21 +0200, Björn Steinbrink wrote: > > > > > > The non-SMP call to update_process_times() is in do_timer_interrupt_hook(), > > > so I guess the above is not the Right Thing to do. > > > > Ah, there it is. That's what I was looking for. I figured that doing > > what I did had to be wrong, but tried it for grins anyway... was pretty > > surprised when it worked (kinda). > > Calling update_process_times() in do_timer_interrupt_hook() flat does > not work here. Calling it in smp_local_timer_interrupt() works fine. > > Oh joy. I can reproduce it now, seems to require CONFIG_4KSTACKS to fail. Can you confirm that? Björn