Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756631Ab3ILTsl (ORCPT ); Thu, 12 Sep 2013 15:48:41 -0400 Received: from relay2.sgi.com ([192.48.179.30]:35227 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756600Ab3ILTsg (ORCPT ); Thu, 12 Sep 2013 15:48:36 -0400 Date: Thu, 12 Sep 2013 20:48:33 +0100 From: Hedi Berriche To: Mike Travis Cc: paulmck@linux.vnet.ibm.com, Peter Zijlstra , Paul Mackerras , Ingo Molnar , Arnaldo Carvalho de Melo , Jason Wessel , "H. Peter Anvin" , Thomas Gleixner , Andrew Morton , Dimitri Sivanich , x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 9/9] x86/UV: Add ability to disable UV NMI handler Message-ID: <20130912194833.GW8742@dangermouse.emea.sgi.com> Mail-Followup-To: Mike Travis , paulmck@linux.vnet.ibm.com, Peter Zijlstra , Paul Mackerras , Ingo Molnar , Arnaldo Carvalho de Melo , Jason Wessel , "H. Peter Anvin" , Thomas Gleixner , Andrew Morton , Dimitri Sivanich , x86@kernel.org, linux-kernel@vger.kernel.org References: <20130905225032.879120272@asylum.americas.sgi.com> <20130905225034.343366161@asylum.americas.sgi.com> <20130909124349.GY31370@twins.programming.kicks-ass.net> <522E0037.3090107@sgi.com> <20130910090349.GN26785@twins.programming.kicks-ass.net> <20130912172731.GR3966@linux.vnet.ibm.com> <52320F18.4040407@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <52320F18.4040407@sgi.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 929 Lines: 26 On Thu, Sep 12, 2013 at 19:59 Mike Travis wrote: | On 9/12/2013 10:27 AM, Paul E. McKenney wrote: | | > But what is it that you are looking for? If you want to silence it | > completely, the rcu_cpu_stall_suppress boot/sysfs parameter is what | > you want to use. | | We have by default rcutree.rcu_cpu_stall_suppress=1 on the kernel | cmdline. I'll double check if it was set during my testing. FWIW, for recent enough kernels the correct boot parameter is rcupdate.rcu_cpu_stall_suppress. It used to be rcutree.rcu_cpu_stall_suppress, but that has changed after commit 6bfc09e. Cheers, Hedi. -- Be careful of reading health books, you might die of a misprint. -- Mark Twain -- 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/