Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756763AbXFSJFF (ORCPT ); Tue, 19 Jun 2007 05:05:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752803AbXFSJE4 (ORCPT ); Tue, 19 Jun 2007 05:04:56 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:41522 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753333AbXFSJEz (ORCPT ); Tue, 19 Jun 2007 05:04:55 -0400 Date: Tue, 19 Jun 2007 11:04:30 +0200 From: Ingo Molnar To: Srivatsa Vaddagiri Cc: "Paul E. McKenney" , Thomas Gleixner , Dinakar Guniguntala , Dmitry Adamushko , suresh.b.siddha@intel.com, pwil3058@bigpond.net.au, clameter@sgi.com, linux-kernel@vger.kernel.org, akpm@linux-foundation.org Subject: Re: v2.6.21.4-rt11 Message-ID: <20070619090430.GA7471@elte.hu> References: <20070613184741.GC8125@linux.vnet.ibm.com> <20070613185522.GA27335@elte.hu> <20070613233910.GJ8125@linux.vnet.ibm.com> <20070615144535.GA12078@elte.hu> <20070615151452.GC9301@linux.vnet.ibm.com> <20070615195545.GA28872@elte.hu> <20070616011605.GH9301@linux.vnet.ibm.com> <20070616084434.GG2559@linux.vnet.ibm.com> <20070616161213.GA2994@linux.vnet.ibm.com> <20070618151215.GA9750@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070618151215.GA9750@linux.vnet.ibm.com> User-Agent: Mutt/1.5.14 (2007-02-12) 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 Content-Length: 805 Lines: 20 * Srivatsa Vaddagiri wrote: > I believe the patch below is correct. With the patch applied, I could > not recreate the imbalance with rcutorture. Let me know whether you > still see the problem with this patch applied on any other machine. thanks for tracking this down! I've applied Christoph's patch (with your suggested modification plus a few small cleanups). I'm wondering, why did this trigger under CFS and not on mainline? Mainline seems to have a similar problem in idle_balance() too, or am i misreading it? 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/