From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161001AbXDSGmM (ORCPT ); Thu, 19 Apr 2007 02:42:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161034AbXDSGmL (ORCPT ); Thu, 19 Apr 2007 02:42:11 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:43091 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161001AbXDSGmL (ORCPT ); Thu, 19 Apr 2007 02:42:11 -0400 Date: Thu, 19 Apr 2007 08:41:47 +0200 From: Ingo Molnar To: Christian Hesse Cc: linux-kernel@vger.kernel.org, Linus Torvalds , Andrew Morton , Con Kolivas , Nick Piggin , Mike Galbraith , Arjan van de Ven , Thomas Gleixner , suspend2-devel@lists.suspend2.net Subject: Re: CFS and suspend2: hang in atomic copy Message-ID: <20070419064147.GA25002@elte.hu> References: <20070413202100.GA9957@elte.hu> <200704182245.24156.mail@earthworm.de> <20070418211632.GA7610@elte.hu> <200704182357.28107.mail@earthworm.de> <20070418221609.GA17347@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070418221609.GA17347@elte.hu> User-Agent: Mutt/1.4.2.2i X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.1.7 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Ingo Molnar wrote: > i just tried the same and it suspended+resumed just fine: > > Restarting tasks ... done. > Suspend2 debugging info: > - Suspend core : 2.2.9.12 > - Kernel Version : 2.6.21-rc7-CFS-v3 the key difference was that i should have attempted to sw-suspend to disk on an SMP box - that's where the bug triggered. Ingo