From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933531AbXIKJCP (ORCPT ); Tue, 11 Sep 2007 05:02:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932272AbXIKJB7 (ORCPT ); Tue, 11 Sep 2007 05:01:59 -0400 Received: from www.osadl.org ([213.239.205.134]:47235 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932280AbXIKJB7 (ORCPT ); Tue, 11 Sep 2007 05:01:59 -0400 Subject: Re: clockevents: fix resume logic From: Thomas Gleixner To: Andrew Morton Cc: Linux Kernel Mailing List , john stultz , Ingo Molnar , "Rafael J. Wysocki" In-Reply-To: <20070911012005.4df3ddf4.akpm@linux-foundation.org> References: <200707220159.l6M1xBgH001236@hera.kernel.org> <20070910144740.4eba2fda.akpm@linux-foundation.org> <1189492636.25767.62.camel@chaos> <20070911000001.30f8590b.akpm@linux-foundation.org> <1189495400.25767.81.camel@chaos> <1189496840.22589.1.camel@chaos> <20070911012005.4df3ddf4.akpm@linux-foundation.org> Content-Type: text/plain Date: Tue, 11 Sep 2007 11:01:54 +0200 Message-Id: <1189501314.6262.4.camel@chaos> Mime-Version: 1.0 X-Mailer: Evolution 2.11.92 (2.11.92-1.fc8) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2007-09-11 at 01:20 -0700, Andrew Morton wrote: > On Tue, 11 Sep 2007 09:47:20 +0200 Thomas Gleixner wrote: > > > On Tue, 2007-09-11 at 09:23 +0200, Thomas Gleixner wrote: > > > > I went back to the original patch which I sent to Linus and it matches > > > > 18de5bc4c1f1f1fa5e14f354a7603bd6e9d4e3b6. So all I can think is that there > > > > must have been something else in the tree which I tested which fixed the > > > > bug which 18de5bc4c1f1f1fa5e14f354a7603bd6e9d4e3b6 introduced. argh. > > > > > > > > Can you think what would cause the symptoms which I described? > > > > > > It seems that time is not updated. Timer interrupt not active or some > > > other odd thing. I figure out what's going on when I find a box which > > > exposes the problem. > > 2.6.22-rc6-mm1's git-acpi.patch contains something which fixes this bug. > It's a quarter megabyte :( Presumably clockevents-fix-resume-logic.patch > depended on something which was in that git-acpi.patch but which for some > reason didn't get merged. Ho hum, I'll take a look, see if I can spot it. > > > Can you please try the following command line options: > > > > nolapic_timer > > Works > > > nohz=off > > Fails > > > > highres=off > > Fails > > > nohz=off highres=off > > Works Ah. Adding your observation of the missing bit from the acpi stuff, I think this must be related to the broadcast functionality. Btw, 23-rc6 does not resume the Intel Video card on one of my laptops. Sigh ! tglx