Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932781AbaLBQ6s (ORCPT ); Tue, 2 Dec 2014 11:58:48 -0500 Received: from mail-qa0-f53.google.com ([209.85.216.53]:60923 "EHLO mail-qa0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932303AbaLBQ6p (ORCPT ); Tue, 2 Dec 2014 11:58:45 -0500 Message-ID: <547defc3.28568c0a.73eb.1a1e@mx.google.com> Date: Tue, 2 Dec 2014 14:58:38 -0200 From: =?UTF-8?B?RMOibmllbA==?= Fraga To: Lai Jiangshan Cc: , Linus Torvalds , Linux Kernel Mailing List Subject: Re: frequent lockups in 3.18rc4 In-Reply-To: <547D7B05.6080403@cn.fujitsu.com> References: <20141126024032.GA13246@redhat.com> <20141126225745.GA30346@redhat.com> <20141127225637.GA24019@redhat.com> <547b8a45.6e608c0a.20f9.1002@mx.google.com> <547bbe36.48548c0a.105c.779c@mx.google.com> <20141201191431.GA17385@linux.vnet.ibm.com> <547D7B05.6080403@cn.fujitsu.com> Organization: http://www.youtube.com/DanielFragaBR X-Mailer: Claws Mail 3.11.1-9-g1f531c (GTK+ 2.24.25; x86_64-unknown-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2 Dec 2014 16:40:37 +0800 Lai Jiangshan wrote: > It is needed at lest for testing. > > CONFIG_TREE_PREEMPT_RCU=y with CONFIG_PREEMPT=n is needed for testing too. > > Please enable them (or enable them under CONFIG_RCU_TRACE=y) Lai, sorry but I didn't understand. Do you mean both of them enabled? Because how can CONFIG_TREE_PREEMPT_RCU be enabled without CONFIG_PREEMPT ? If you mean both enabled, I already reported a call trace with both enabled: https://bugzilla.kernel.org/show_bug.cgi?id=85941 Please see my previous answer to Linus and Paul too. Regarding CONFIG_RCU_TRACE, do you mean "CONFIG_TREE_RCU_TRACE"? I couldn't find CONFIG_RCU_TRACE. Thanks. -- Linux 3.17.0-dirty: Shuffling Zombie Juror http://www.youtube.com/DanielFragaBR http://exchangewar.info Bitcoin: 12H6661yoLDUZaYPdah6urZS5WiXwTAUgL -- 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/