Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759052AbaD3PLG (ORCPT ); Wed, 30 Apr 2014 11:11:06 -0400 Received: from cdptpa-outbound-snat.email.rr.com ([107.14.166.229]:2554 "EHLO cdptpa-oedge-vip.email.rr.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752425AbaD3PLD (ORCPT ); Wed, 30 Apr 2014 11:11:03 -0400 Date: Wed, 30 Apr 2014 11:11:00 -0400 From: Steven Rostedt To: Mike Galbraith Cc: Nicholas Mc Guire , Sebastian Andrzej Siewior , linux-rt-users , LKML , Thomas Gleixner , John Kacur , Clark Williams Subject: Re: [ANNOUNCE] 3.14-rt1 Message-ID: <20140430111100.72a7a71b@gandalf.local.home> In-Reply-To: <1398869686.26071.151.camel@marge.simpson.net> References: <20140411185739.GA6644@linutronix.de> <1397918766.5436.16.camel@marge.simpson.net> <1398411635.11930.45.camel@marge.simpson.net> <1398501491.12941.5.camel@marge.simpson.net> <1398520699.28726.22.camel@marge.simpson.net> <1398661784.30930.33.camel@marge.simpson.net> <1398676186.30930.49.camel@marge.simpson.net> <20140428101805.75032f45@gandalf.local.home> <1398695832.14475.10.camel@marge.simpson.net> <1398748869.5514.81.camel@marge.simpson.net> <20140429201308.63292691@gandalf.local.home> <1398843793.26071.52.camel@marge.simpson.net> <1398863189.26071.97.camel@marge.simpson.net> <20140430091550.1177bc90@gandalf.local.home> <1398866403.26071.125.camel@marge.simpson.net> <20140430101919.70b2f622@gandalf.local.home> <20140430103308.1e46dd18@gandalf.local.home> <1398869686.26071.151.camel@marge.simpson.net> X-Mailer: Claws Mail 3.9.3 (GTK+ 2.24.22; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-RR-Connecting-IP: 107.14.168.142:25 X-Cloudmark-Score: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 30 Apr 2014 16:54:46 +0200 Mike Galbraith wrote: > On Wed, 2014-04-30 at 10:33 -0400, Steven Rostedt wrote: > > On Wed, 30 Apr 2014 10:19:19 -0400 > > Steven Rostedt wrote: > > > > > I'm testing it now. But could you please post them as regular patches. > > > They were attachments to this thread, and were not something that stood > > > out. > > > > With your two patches, it still crashes exactly the same way. I > > probably should remove my debug just in case, but I think this box has > > another problem with it. > > You killed this hunk of hotplug-light-get-online-cpus.patch > > @@ -333,7 +449,7 @@ static int __ref _cpu_down(unsigned int > /* CPU didn't die: tell everyone. Can't complain. */ > smpboot_unpark_threads(cpu); > cpu_notify_nofail(CPU_DOWN_FAILED | mod, hcpu); > - goto out_release; > + goto out_cancel; I added this, but it only happens on the failed case, which I don't think is an issue with what I'm dealing with. > } > BUG_ON(cpu_online(cpu)); > > ..and fixed this too? > > Another little bug. This hunk of patches/stomp-machine-raw-lock.patch > should be while (atomic_read(&done.nr_todo)) > > @@ -647,7 +671,7 @@ int stop_machine_from_inactive_cpu(int ( > ret = multi_cpu_stop(&msdata); > > /* Busy wait for completion. */ > - while (!completion_done(&done.completion)) > + while (!atomic_read(&done.nr_todo)) I don't see this in the code. That is, there is no "completion_done()" in stop_machine_from_inactive_cpu(). It is already an atomic_read(). -- Steve > cpu_relax(); > > mutex_unlock(&stop_cpus_mutex); -- 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/