From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752101Ab1GTRE1 (ORCPT ); Wed, 20 Jul 2011 13:04:27 -0400 Received: from mail.candelatech.com ([208.74.158.172]:49023 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751613Ab1GTRE0 (ORCPT ); Wed, 20 Jul 2011 13:04:26 -0400 Message-ID: <4E270A0E.6090902@candelatech.com> Date: Wed, 20 Jul 2011 10:02:06 -0700 From: Ben Greear Organization: Candela Technologies User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-2.fc11 Thunderbird/3.0.4 MIME-Version: 1.0 To: paulmck@linux.vnet.ibm.com CC: Linus Torvalds , Ed Tomlinson , linux-kernel@vger.kernel.org, mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca, josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, Valdis.Kletnieks@vt.edu, dhowells@redhat.com, eric.dumazet@gmail.com, darren@dvhart.com, patches@linaro.org, edward.tomlinson@aero.bombardier.com Subject: Re: [PATCH rcu/urgent 0/6] Fixes for RCU/scheduler/irq-threads trainwreck References: <20110720001738.GA16369@linux.vnet.ibm.com> <201107192130.02080.edt@aei.ca> <201107192207.33813.edt@aei.ca> <20110720044435.GB2400@linux.vnet.ibm.com> <20110720133443.GG2400@linux.vnet.ibm.com> In-Reply-To: <20110720133443.GG2400@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/20/2011 06:34 AM, Paul E. McKenney wrote: > On Tue, Jul 19, 2011 at 10:03:05PM -0700, Linus Torvalds wrote: >> On Tue, Jul 19, 2011 at 9:44 PM, Paul E. McKenney >> wrote: >>> On Tue, Jul 19, 2011 at 10:07:32PM -0400, Ed Tomlinson wrote: >>>> On Tuesday 19 July 2011 21:30:00 Ed Tomlinson wrote: >>>>> On Tuesday 19 July 2011 20:17:38 Paul E. McKenney wrote: >>>> >>>> Paul, >>>> >>>> Two things to add. Its possible an eariler error is missing from the log below. My serial console was missing >>>> entries from before '0 and 40ish' and I did think I saw a bunch of FFFFFFFs scroll by eariler... >>>> >>>> Second, booting with threadirqs and boost enabled in .config with patches 2,5,6 is ok so far. >>> >>> Patches 3 and 4 resulted in failures? (Patch 1 certainly did.) >> >> Gaah. Any possibility of getting this resolved soon? > > I believe that we are very close. These failures all involve unusual > configurations, which is why they showed up so late. What is strange about my configuration? Just that I enabled the RCU boost and other new RCU features? Surely it's not that I'm just doing lots of mounts and unmounts and file-io with lots of processes.... And I was posting lockdep warnings on this since -rc1 or so, though granted I was running a few extra patches and having other bugs at the same time.... Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com