From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751725AbXCTQKB (ORCPT ); Tue, 20 Mar 2007 12:10:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934014AbXCTQKA (ORCPT ); Tue, 20 Mar 2007 12:10:00 -0400 Received: from smtp.osdl.org ([65.172.181.24]:44802 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751725AbXCTQJ7 (ORCPT ); Tue, 20 Mar 2007 12:09:59 -0400 Date: Tue, 20 Mar 2007 08:09:44 -0800 From: Andrew Morton To: Jiri Slaby Cc: linux-kernel@vger.kernel.org, pavel@suse.cz, linux-pm@lists.osdl.org, "Rafael J. Wysocki" Subject: Re: 2.6.21-rc4-mm1 Message-Id: <20070320080944.9cb3c765.akpm@linux-foundation.org> In-Reply-To: <45FFF026.4030502@gmail.com> References: <20070319205623.299d0378.akpm@linux-foundation.org> <45FFF026.4030502@gmail.com> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 20 Mar 2007 15:31:02 +0100 Jiri Slaby wrote: > Andrew Morton napsal(a): > > http://userweb.kernel.org/~akpm/2.6.21-rc4-mm1/ > > I'm getting this while trying to swsusp: > Stopping tasks ... > Stopping kernel threads timed out after 20 seconds (1 tasks refusing to freeze): > swapper > Restarting tasks ... done. > > What to test? Enable PM_DEBUG? hm, OK. Rafael has been working on fixing the process freezer and it'll take some time to get it to where we want it to be, I expect. Rafael, I think that we could afford to add heaps of debug in there at this stage to help us track down problems like this. Also, it might be useful to add a temporary /proc/freeze-unfreeze thing which will simply do a freeze/unfreeze cycle. Then we can apply various workloads to the machine while madly stressing the freezer code.