Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755218AbXLJJbF (ORCPT ); Mon, 10 Dec 2007 04:31:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751699AbXLJJaz (ORCPT ); Mon, 10 Dec 2007 04:30:55 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:45981 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751705AbXLJJay (ORCPT ); Mon, 10 Dec 2007 04:30:54 -0500 Date: Mon, 10 Dec 2007 10:29:48 +0100 From: Ingo Molnar To: Gautham R Shenoy Cc: Jiri Slaby , Andrew Morton , linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Arjan van de Ven , Thomas Gleixner , Linux-pm mailing list , Dipankar Sarma Subject: Re: broken suspend (sched related) [Was: 2.6.24-rc4-mm1] Message-ID: <20071210092948.GA18184@elte.hu> References: <47595A0A.5000502@gmail.com> <20071207151150.GB24254@elte.hu> <20071207175134.GA18916@elte.hu> <475A5188.6070809@gmail.com> <20071208083939.GD30997@elte.hu> <475A629C.7010408@gmail.com> <20071208152447.GA30270@elte.hu> <475B24F4.3090904@gmail.com> <20071209074647.GE22981@elte.hu> <20071210081952.GA7215@in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071210081952.GA7215@in.ibm.com> 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: 628 Lines: 18 * Gautham R Shenoy wrote: > Further more this can cause a deadlock since we're calling > get_online_cpus() from the watchdog thread's context, which is going > to be kthread_stop'ed from a cpu-hotplug context. This is what I think > was happening in the case reported by Jiri. > > Please find the patch below. thanks, and i've updated sched-devel.git. 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/