From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934004AbXCKTEn (ORCPT ); Sun, 11 Mar 2007 15:04:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934005AbXCKTEn (ORCPT ); Sun, 11 Mar 2007 15:04:43 -0400 Received: from mx1.redhat.com ([66.187.233.31]:36982 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934004AbXCKTEm (ORCPT ); Sun, 11 Mar 2007 15:04:42 -0400 Message-ID: <45F452A2.2050009@redhat.com> Date: Sun, 11 Mar 2007 20:04:02 +0100 From: Milan Broz User-Agent: Thunderbird 1.5.0.10 (X11/20070302) MIME-Version: 1.0 To: "Rafael J. Wysocki" CC: Thomas Meyer , linux-kernel@vger.kernel.org, Pavel Machek Subject: Re: SwSusp to disk doesn't work - Try 2 References: <45F44599.3060508@m3y3r.de> <200703111926.20183.rjw@sisk.pl> In-Reply-To: <200703111926.20183.rjw@sisk.pl> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Rafael J. Wysocki napsal(a): > On Sunday, 11 March 2007 19:08, Thomas Meyer wrote: >> Suspend to disk doesn't work on my laptop. >> >> The suspend seems to hang while enabling the non-boot cpus again. >> >> with platform = "test" and state = "disk" i get this: >> Enabling non-boot CPUs ... ... > > Could you please put some printk()s in kernel/cpu.c:_cpu_up() to see where > it gets stuck? I bet one of the notifiers goes to sleep (cpufreq, maybe). Hi, I see the same problem - 2.6.21-rc3 with NO_HZ set (tickless), short printk trace enable_nonboot_cpus _cpu_up raw_notifier_callchain (CPU_UP_PREPARE) ... update_sched_domains detach_destroy_domains [waits here] --> synchronize_sched (==synchronize_rcu) Milan