Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932474AbaLBRQY (ORCPT ); Tue, 2 Dec 2014 12:16:24 -0500 Received: from mail-qc0-f176.google.com ([209.85.216.176]:42426 "EHLO mail-qc0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932236AbaLBRQX (ORCPT ); Tue, 2 Dec 2014 12:16:23 -0500 Message-ID: <547df3e5.725e8c0a.6716.2828@mx.google.com> Date: Tue, 2 Dec 2014 15:16:17 -0200 From: =?UTF-8?B?RMOibmllbA==?= Fraga To: Linus Torvalds Cc: "Paul E. McKenney" , Linux Kernel Mailing List Subject: Re: frequent lockups in 3.18rc4 In-Reply-To: References: <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> <547ccf74.a5198c0a.25de.26d9@mx.google.com> <20141201230813.GE25340@linux.vnet.ibm.com> <547dec29.c71f8c0a.33d1.11d9@mx.google.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 09:08:53 -0800 Linus Torvalds wrote: > So just to verify: > > Without CONFIG_PREEMPT, things work well for you? Yes. > But with CONFIG_PREEMPT, you are able to create the rcu_sched stalls > both with and without CONFIG_TREE_PREEMPT_RCU? > > Correct? Yes, correct. And without CONFIG_TREE_PREEMPT_RCU it's much harder to trigger the bug. -- 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/