Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756048AbYKDQlP (ORCPT ); Tue, 4 Nov 2008 11:41:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751007AbYKDQk7 (ORCPT ); Tue, 4 Nov 2008 11:40:59 -0500 Received: from e8.ny.us.ibm.com ([32.97.182.138]:37576 "EHLO e8.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750890AbYKDQk6 (ORCPT ); Tue, 4 Nov 2008 11:40:58 -0500 Date: Tue, 4 Nov 2008 08:40:52 -0800 From: "Paul E. McKenney" To: "Rafael J. Wysocki" Cc: Linux Kernel Mailing List , Kernel Testers List , Andi Kleen Subject: Re: [Bug #11876] RCU hang on cpu re-hotplug with 2.6.27rc8 Message-ID: <20081104164052.GA8499@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <4xS1r6m15_B.A.dU.7ueDJB@chimera> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4xS1r6m15_B.A.dU.7ueDJB@chimera> User-Agent: Mutt/1.5.15+20070412 (2007-04-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1164 Lines: 28 On Sun, Nov 02, 2008 at 05:49:38PM +0100, Rafael J. Wysocki wrote: > This message has been generated automatically as a part of a report > of regressions introduced between 2.6.26 and 2.6.27. > > The following bug entry is on the current list of known regressions > introduced between 2.6.26 and 2.6.27. Please verify if it still should > be listed and let me know (either way). > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11876 > Subject : RCU hang on cpu re-hotplug with 2.6.27rc8 > Submitter : Andi Kleen > Date : 2008-10-06 23:28 (28 days old) > References : http://marc.info/?l=linux-kernel&m=122333610602399&w=2 > Handled-By : Paul E. McKenney Hallo, Andi, Last I heard, the act of enabling CONFIG_RCU_CPU_STALL_DETECTOR reduced the problem from a hang to a 3-second grace period. How are things going with this now? Thanx, Paul -- 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/