From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756903AbYA0LRs (ORCPT ); Sun, 27 Jan 2008 06:17:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753636AbYA0LRl (ORCPT ); Sun, 27 Jan 2008 06:17:41 -0500 Received: from einhorn.in-berlin.de ([192.109.42.8]:36319 "EHLO einhorn.in-berlin.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751006AbYA0LRk (ORCPT ); Sun, 27 Jan 2008 06:17:40 -0500 X-Envelope-From: stefanr@s5r6.in-berlin.de Message-ID: <479C6821.1000405@s5r6.in-berlin.de> Date: Sun, 27 Jan 2008 12:16:49 +0100 From: Stefan Richter User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11) Gecko/20071216 SeaMonkey/1.1.7 MIME-Version: 1.0 To: paulmck@linux.vnet.ibm.com CC: Ingo Molnar , linux-kernel@vger.kernel.org Subject: Re: preemptible RCU bug (was Re: [git pull] scheduler changes for v2.6.25) References: <20080125203740.GA31784@elte.hu> <479B87B9.8080005@s5r6.in-berlin.de> <20080127110559.GB28315@linux.vnet.ibm.com> In-Reply-To: <20080127110559.GB28315@linux.vnet.ibm.com> X-Enigmail-Version: 0.95.3 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 Paul E. McKenney wrote: > --- linux-2.6.24-rt1/kernel/Kconfig.preempt 2008-01-27 02:52:36.000000000 -0800 > +++ linux-2.6.24-rt1-RCUconfighelp/kernel/Kconfig.preempt 2008-01-27 03:05:22.000000000 -0800 > @@ -131,6 +131,14 @@ choice > prompt "RCU implementation type:" > default PREEMPT_RCU if PREEMPT_RT > default CLASSIC_RCU > + help > + This allows you to choose either the classic RCU implementation > + that is designed for best read-side performance on non-realtime > + systems, or the preemptible RCU implementation for best latency > + on realtime systems. Note that some kernel preemption modes > + will restrict your choice. > + > + Select the default if you are unsure. Looks good to me. Serves those people who want to be informed as well as those who want to be comforted. :-) Thanks, -- Stefan Richter -=====-==--- ---= ==-== http://arcgraph.de/sr/