From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422627AbWKHTeu (ORCPT ); Wed, 8 Nov 2006 14:34:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161727AbWKHTeu (ORCPT ); Wed, 8 Nov 2006 14:34:50 -0500 Received: from www.osadl.org ([213.239.205.134]:36576 "EHLO mail.tglx.de") by vger.kernel.org with ESMTP id S1161725AbWKHTet (ORCPT ); Wed, 8 Nov 2006 14:34:49 -0500 Subject: Re: CONFIG_NO_HZ: missed ticks, stall (keyb IRQ required) [2.6.18-rc4-mm1] From: Thomas Gleixner Reply-To: tglx@linutronix.de To: Andreas Mohr Cc: Ingo Molnar , Len Brown , linux-kernel@vger.kernel.org In-Reply-To: <20061107222711.GA22612@rhlx01.hs-esslingen.de> References: <20061101140729.GA30005@rhlx01.hs-esslingen.de> <1162830033.4715.201.camel@localhost.localdomain> <20061106205825.GA26755@rhlx01.hs-esslingen.de> <200611070141.16593.len.brown@intel.com> <20061107080733.GB9910@elte.hu> <1162887935.4715.349.camel@localhost.localdomain> <20061107091628.GA5399@rhlx01.hs-esslingen.de> <1162891737.4715.354.camel@localhost.localdomain> <1162892758.4715.362.camel@localhost.localdomain> <20061107222711.GA22612@rhlx01.hs-esslingen.de> Content-Type: text/plain Date: Wed, 08 Nov 2006 20:36:59 +0100 Message-Id: <1163014620.8335.46.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2006-11-07 at 23:27 +0100, Andreas Mohr wrote: > I applied the patch, the changes *are* in the tree and I did create and > install a new image (with CONFIG_NO_HZ re-enabled and C1 hard-wiring removed), > but it failed again, completely. The usual hang during boot with > keyboard activity required, and then it didn't even manage to finish booting > (I probably was too slow in generating the necessary amount of events). > > Let me think a bit about that stuff, maybe I'll be able to figure out what's > happening on my system. Or any other ideas? > (since I would like to somehow get this resolved without less than perfect > workarounds if possible) Yes, I'm going to drop the detection as it can never be perfect and enforce the PIT usage on UP boxen, as it seems that the lapic / BIOS crap is more or less unfixable. Working on a patch against rc5-mm1 right now. tglx