Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756964AbYAFJpm (ORCPT ); Sun, 6 Jan 2008 04:45:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753264AbYAFJpe (ORCPT ); Sun, 6 Jan 2008 04:45:34 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:41048 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752973AbYAFJpd (ORCPT ); Sun, 6 Jan 2008 04:45:33 -0500 Date: Sun, 6 Jan 2008 10:45:04 +0100 From: Ingo Molnar To: "Rafael J. Wysocki" Cc: LKML , Andrew Morton , Linus Torvalds , Adrian Bunk , Parag Warudkar , "Pallipadi, Venkatesh" , Thomas Gleixner Subject: Re: 2.6.24-rc6-git12: Reported regressions from 2.6.23 Message-ID: <20080106094504.GE26291@elte.hu> References: <200801052042.56042.rjw@sisk.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200801052042.56042.rjw@sisk.pl> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1368 Lines: 39 * Rafael J. Wysocki wrote: > Subject : soft lockup - CPU#1 stuck for 15s! [swapper:0] > Submitter : "Parag Warudkar" > Date : 2007-12-07 18:14 > References : http://lkml.org/lkml/2007/12/7/299 > http://bugzilla.kernel.org/show_bug.cgi?id=9525 > Handled-By : "Pallipadi, Venkatesh" > Thomas Gleixner > Ingo Molnar i think this only occurs with cpuidle, right? drivers/cpuidle/ and CPU_IDLE is new in 2.6.24 so this appears to be a bug in that code (or a bug elsewhere triggered by that code), not a regression from v2.6.23. this commit might also have improved things: ------------> commit 2bacec8c318ca0418c0ee9ac662ee44207765dd4 Author: Ingo Molnar Date: Tue Dec 18 15:21:13 2007 +0100 sched: touch softlockup watchdog after idling touch softlockup watchdog after idling. Signed-off-by: Ingo Molnar <------------ albeit Parag reported actual real, human-noticeable delays in system behavior and those cannot be false positives. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/