Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752565AbYKLJFb (ORCPT ); Wed, 12 Nov 2008 04:05:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751603AbYKLJFP (ORCPT ); Wed, 12 Nov 2008 04:05:15 -0500 Received: from mtagate2.uk.ibm.com ([194.196.100.162]:53265 "EHLO mtagate2.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751497AbYKLJFM (ORCPT ); Wed, 12 Nov 2008 04:05:12 -0500 Date: Wed, 12 Nov 2008 10:05:08 +0100 From: Heiko Carstens To: "Paul E. McKenney" Cc: Ingo Molnar , "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Rusty Russell , Vegard Nossum , Peter Zijlstra , Oleg Nesterov , Dmitry Adamushko , Andrew Morton , Steven Rostedt Subject: Re: [Bug #11989] Suspend failure on NForce4-based boards due to chanes in stop_machine Message-ID: <20081112090508.GA14329@osiris.boeblingen.de.ibm.com> References: <200811101547.21325.rjw@sisk.pl> <200811102355.42389.rjw@sisk.pl> <20081111105214.GA15645@elte.hu> <20081111113134.GA5653@osiris.boeblingen.de.ibm.com> <20081111124201.GA9459@osiris.boeblingen.de.ibm.com> <20081111143505.GA6923@linux.vnet.ibm.com> <20081111150225.GA10743@linux.vnet.ibm.com> <20081111161401.GC9459@osiris.boeblingen.de.ibm.com> <20081111164523.GB6736@linux.vnet.ibm.com> <20081111173451.GA24720@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081111173451.GA24720@linux.vnet.ibm.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1525 Lines: 29 On Tue, Nov 11, 2008 at 09:34:51AM -0800, Paul E. McKenney wrote: > On Tue, Nov 11, 2008 at 08:45:23AM -0800, Paul E. McKenney wrote: > > On Tue, Nov 11, 2008 at 05:14:01PM +0100, Heiko Carstens wrote: > > > > > Could you please apply the following debug patch (due to Jiangshan and > > > > > myself)? Then you should be able to build with CONFIG_RCU_TRACE, > > > > > then mount debugfs after boot, for example, on /debug. This will > > > > > create a /debug/rcu directory with three files, "rcucb", "rcu_data", > > > > > and "rcu_bh_data". Since you are still able to log in, could you > > > > > please send the contents of these three files? > > > > > > > > > > Thanx, Paul > > > > > > > > This time with the patch actually attached... Thanks to Peter Z. > > > > for alerting me to my omission. > > > > > > Well, your patch doesn't apply on git head. However I used preemptible > > > RCU instead and had tracing enabled. > > > > Were you using preemptible RCU earlier as well? Raphael was using > > classic RCU. Don't get me wrong, all problems need fixing, just trying > > to make sure I understand where the problems are occurring. Indeed, my fault. I just try to reproduce a cpu hotplug bug with classic RCU and cpu hotplug stress test, but no luck so far. -- 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/