From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754437AbYFRMm1 (ORCPT ); Wed, 18 Jun 2008 08:42:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753350AbYFRMmP (ORCPT ); Wed, 18 Jun 2008 08:42:15 -0400 Received: from www.tglx.de ([62.245.132.106]:49677 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751908AbYFRMmO (ORCPT ); Wed, 18 Jun 2008 08:42:14 -0400 Date: Wed, 18 Jun 2008 14:41:35 +0200 (CEST) From: Thomas Gleixner To: "Rafael J. Wysocki" cc: "Maciej W. Rozycki" , Stephen Rothwell , linux-next@vger.kernel.org, LKML , Ingo Molnar , ACPI Devel Maling List , Len Brown Subject: Re: linux-next: Tree for June 13: IO APIC breakage on HP nx6325 In-Reply-To: Message-ID: References: <20080613232214.394fd6fd.sfr@canb.auug.org.au> <200806172244.24026.rjw@sisk.pl> <200806180019.49628.rjw@sisk.pl> <200806180025.20504.rjw@sisk.pl> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 18 Jun 2008, Thomas Gleixner wrote: > On Wed, 18 Jun 2008, Rafael J. Wysocki wrote: > > On Wednesday, 18 of June 2008, Rafael J. Wysocki wrote: > > > On Tuesday, 17 of June 2008, Rafael J. Wysocki wrote: > > > > On Tuesday, 17 of June 2008, Thomas Gleixner wrote: > > > > > On Tue, 17 Jun 2008, Rafael J. Wysocki wrote: > > > > > > > > > > > > BTW, with the C1E patches reverted I don't get the > > > > > > WARNING: at /home/rafael/src/linux-next/kernel/smp.c:215 smp_call_function_single+0x3d/0xa2 > > > > > > in the log. Thomas? > > > > > > > > > > Yeah, my bad. Fix below. > > > > > > > > Thanks, it eliminates the WARNING, but still the box doesn't work with > > > > the "x86: add C1E aware idle function" patch applied, even with 'highres=off'. > > > > > > > > The main symptom is that CPU loads are computed incorrectly (I got X using 126% > > > > of CPU time from 'top', for example). Apart from this, some processes (like > > > > gkrellm) seem to be 'frozen' and only change their state in 'jumps', as though > > > > they only got CPU from time to time at random. > > > > > > > > Reverting the above-mentioned patch fixes those problems. > > > > > > Ah. If your fix is replaced with the appended one, the system happily works > > > with C1E and highres. > > > > Scratch that. The symptoms appeared later this time, that's all. I've just got > > b43 consuming 90+ % of the CPU time. :-( > > I would have been pretty surprised if it had helped :) > > Does the box boot when you disable the local apic timer on the kernel > command line with the patch applied ? > > Also does forcing hpet change anything ? I just checked that the original c1e series and the affected code in tip are not different. IIRC you confirmed that the C1E patches would work on your box. So I wonder what else got changed which causes these problems. Thanks, tglx