Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756166Ab1FNLCa (ORCPT ); Tue, 14 Jun 2011 07:02:30 -0400 Received: from casper.infradead.org ([85.118.1.10]:59547 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756084Ab1FNLC2 convert rfc822-to-8bit (ORCPT ); Tue, 14 Jun 2011 07:02:28 -0400 Subject: Re: BUG on 3.0-rc on commit d72bce0e67e8afc6eb959f656013cbb577426f1e From: Peter Zijlstra To: Steven Rostedt Cc: habanero@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, paulmck In-Reply-To: <1308014683.9218.107.camel@gandalf.stny.rr.com> References: <1307711837.23688.33.camel@atheurer-ubuntu10> <1307715084.3941.166.camel@twins> <1307717156.3941.169.camel@twins> <1307720081.17297.6.camel@atheurer-w510> <1307723232.3941.178.camel@twins> <1307977614.17297.12.camel@atheurer-w510> <1307979239.9218.76.camel@gandalf.stny.rr.com> <1308009910.23688.34.camel@atheurer-ubuntu10> <1308014683.9218.107.camel@gandalf.stny.rr.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Tue, 14 Jun 2011 13:02:01 +0200 Message-ID: <1308049321.19856.15.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1103 Lines: 35 On Mon, 2011-06-13 at 21:24 -0400, Steven Rostedt wrote: > On Mon, 2011-06-13 at 19:05 -0500, Andrew Theurer wrote: > > > > Could you try this patch? > > > > Yes, and it works! Thanks very much! > > Could you try this patch instead? I don't like holding off migration for > the entire boot processes. Great, thanks Steve!, will you be sending this Ingo-wards? > diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c > index 88725c9..4505bfb 100644 > --- a/kernel/sched_rt.c > +++ b/kernel/sched_rt.c > @@ -1239,6 +1239,10 @@ static int find_lowest_rq(struct task_struct *task) > int this_cpu = smp_processor_id(); > int cpu = task_cpu(task); > > + /* Make sure the mask is initialized first */ > + if (unlikely(!lowest_mask)) > + return -1; > + > if (task->rt.nr_cpus_allowed == 1) > return -1; /* No other targets possible */ > > > -- 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/