Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753668AbbDAOzs (ORCPT ); Wed, 1 Apr 2015 10:55:48 -0400 Received: from mail-wg0-f54.google.com ([74.125.82.54]:34200 "EHLO mail-wg0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752850AbbDAOzq (ORCPT ); Wed, 1 Apr 2015 10:55:46 -0400 Date: Wed, 1 Apr 2015 16:55:41 +0200 From: Ingo Molnar To: Chris J Arges Cc: Linus Torvalds , Rafael David Tinoco , Peter Anvin , Jiang Liu , Peter Zijlstra , LKML , Jens Axboe , Frederic Weisbecker , Gema Gomez , the arch/x86 maintainers Subject: Re: [debug PATCHes] Re: smp_call_function_single lockups Message-ID: <20150401145541.GA17686@gmail.com> References: <20150331031536.GA9303@canonical.com> <20150331105656.GA25180@gmail.com> <20150331223800.GB12512@canonical.com> <20150401123913.GA12841@gmail.com> <20150401141045.GA12730@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150401141045.GA12730@canonical.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1111 Lines: 33 * Chris J Arges wrote: > > diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c > > index 6cedd7914581..79d6de6fdf0a 100644 > > --- a/arch/x86/kernel/apic/vector.c > > +++ b/arch/x86/kernel/apic/vector.c > > @@ -144,6 +144,8 @@ __assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask) > > cfg->move_in_progress = > > cpumask_intersects(cfg->old_domain, cpu_online_mask); > > cpumask_and(cfg->domain, cfg->domain, tmp_mask); > > + if (cfg->move_in_progress) > > + dump_stack(); > > break; > > } > > > > > > Should I add the dump_stack() to the 'new-domain move' area line > ~184 since that's the path I seem to be triggering? Yeah, please do, that's what I wanted to mark. My guess is that it will show a stack dump to within set_affinity(). Thanks, Ingo -- 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/