Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758110AbZGHWIY (ORCPT ); Wed, 8 Jul 2009 18:08:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756097AbZGHWIN (ORCPT ); Wed, 8 Jul 2009 18:08:13 -0400 Received: from mail-fx0-f218.google.com ([209.85.220.218]:51319 "EHLO mail-fx0-f218.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755171AbZGHWIL (ORCPT ); Wed, 8 Jul 2009 18:08:11 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=TR0KjOeFQv/OsWRfkxeGNMA5n/compxw9C4tfLFpRVgw0ITchkWuAdsrg+7JJNXFbQ zMRRI9syd3jR6H4ophTs2Q2nn7x7+t+RM4+kljVClhQXkACKeqiPScGFZrojX0gKE0Gc 2R3auQDAnNZgv642igV6X9sEQ8TcbQNClJwDE= Date: Thu, 9 Jul 2009 00:07:49 +0200 From: Jarek Poplawski To: Joao Correia Cc: Andres Freund , Arun R Bharadwaj , Thomas Gleixner , Stephen Hemminger , netdev@vger.kernel.org, LKML Subject: Re: Soft-Lockup/Race in networking in 2.6.31-rc1+195 ( possibly?caused by netem) Message-ID: <20090708220749.GA3666@ami.dom.local> References: <200907031326.21822.andres@anarazel.de> <200907071811.27570.andres@anarazel.de> <20090708080852.GC3148@ami.dom.local> <200907081029.34527.andres@anarazel.de> <20090708091344.GD3148@ami.dom.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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: 1257 Lines: 38 On Wed, Jul 08, 2009 at 10:44:47PM +0100, Joao Correia wrote: > Hello again Hello! ... > So again, the only thing that stops that freeze is `echo 0 >> > /proc/sys/kernel/timer_migration`. Apologies for pointing you in the > wrong direction. No problem: the direction is almost right, we only need one U-turn ;-) In case you're not bored or too bored, one little patch to check the other side (after reverting the previous patch). Thanks, Jarek P. --- kernel/hrtimer.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 9002958..23387e4 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -203,7 +203,7 @@ switch_hrtimer_base(struct hrtimer *timer, struct hrtimer_clock_base *base, int cpu, preferred_cpu = -1; cpu = smp_processor_id(); -#if defined(CONFIG_NO_HZ) && defined(CONFIG_SMP) +#if 0 if (!pinned && get_sysctl_timer_migration() && idle_cpu(cpu)) { preferred_cpu = get_nohz_load_balancer(); if (preferred_cpu >= 0) -- 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/