Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753062AbYKKQOT (ORCPT ); Tue, 11 Nov 2008 11:14:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751639AbYKKQOH (ORCPT ); Tue, 11 Nov 2008 11:14:07 -0500 Received: from mtagate8.uk.ibm.com ([195.212.29.141]:35960 "EHLO mtagate8.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751450AbYKKQOE (ORCPT ); Tue, 11 Nov 2008 11:14:04 -0500 Date: Tue, 11 Nov 2008 17:14:01 +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: <20081111161401.GC9459@osiris.boeblingen.de.ibm.com> References: <20081110120401.GA15518@osiris.boeblingen.de.ibm.com> <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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081111150225.GA10743@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: 1452 Lines: 40 > > 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. This is the output of the three files after it stalled (and continued, because I caused an interrupt by sending a network packet) twice: [root@h0545001 rcu]# cat rcuctrs CPU last cur F M 1 0 0 1 1 3 0 0 1 1 4 0 0 0 0 5 0 0 0 1 6 0 0 0 0 ggp = 1640, state = waitack [root@h0545001 rcu]# cat rcugp oldggp=1652 newggp=1655 [root@h0545001 rcu]# cat rcustats na=33948 nl=3 wa=33945 wl=0 da=33945 dl=0 dr=33945 di=0 1=0 e1=0 i1=1674 ie1=4 g1=1670 a1=1920 ae1=251 a2=1669 z1=1669 ze1=0 z2=1669 m1=4411 me1=2742 m2=1669 -- 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/