From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753180Ab2IVRuR (ORCPT ); Sat, 22 Sep 2012 13:50:17 -0400 Received: from mail-ey0-f174.google.com ([209.85.215.174]:45051 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753095Ab2IVRuP (ORCPT ); Sat, 22 Sep 2012 13:50:15 -0400 Message-ID: <505DFA65.3080805@gmail.com> Date: Sat, 22 Sep 2012 19:50:29 +0200 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120913 Thunderbird/15.0.1 MIME-Version: 1.0 To: paulmck@linux.vnet.ibm.com CC: Michael Wang , Dave Jones , "linux-kernel@vger.kernel.org" , fweisbec@gmail.com Subject: Re: RCU idle CPU detection is broken in linux-next References: <505AC979.7000008@gmail.com> <20120920152341.GE2449@linux.vnet.ibm.com> <505C33B9.8000807@gmail.com> <20120921121346.GD2458@linux.vnet.ibm.com> <505C6B03.7020305@gmail.com> <20120921151203.GA2454@linux.vnet.ibm.com> <505C855F.3060301@gmail.com> <505D7621.4040505@gmail.com> <20120922150913.GA2934@linux.vnet.ibm.com> <505DDBE7.7010706@gmail.com> <20120922155613.GB2934@linux.vnet.ibm.com> In-Reply-To: <20120922155613.GB2934@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/22/2012 05:56 PM, Paul E. McKenney wrote: > And now the prime suspect is the new CONFIG_RCU_USER_QS=y. Do these > warnings ever show up with CONFIG_RCU_USER_QS=n? It seems that disabling that does make the warnings go away. I'll keep the tests running in case it just reduces the chances or something like that. Thanks, Sasha