From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753952Ab1EYJOK (ORCPT ); Wed, 25 May 2011 05:14:10 -0400 Received: from smtp-out1.tiscali.nl ([195.241.79.176]:39006 "EHLO smtp-out1.tiscali.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751689Ab1EYJOJ (ORCPT ); Wed, 25 May 2011 05:14:09 -0400 Subject: Re: Mysterious CFQ crash and RCU From: Paul Bolle To: Jens Axboe Cc: "paulmck@linux.vnet.ibm.com" , Vivek Goyal , linux kernel mailing list Date: Wed, 25 May 2011 11:13:52 +0200 In-Reply-To: <4DDCC1E4.706@fusionio.com> References: <20110519222404.GG12600@redhat.com> <20110521210013.GJ2271@linux.vnet.ibm.com> <20110523152141.GB4019@redhat.com> <20110523153848.GC2310@linux.vnet.ibm.com> <1306189249.15900.10.camel@t41.thuisdomein> <4DDB7D36.60905@fusionio.com> <1306312155.9059.8.camel@t41.thuisdomein> <4DDCC1E4.706@fusionio.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.1.1 (3.1.1-3.fc16) Content-Transfer-Encoding: 7bit Message-ID: <1306314848.9059.17.camel@t41.thuisdomein> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2011-05-25 at 10:46 +0200, Jens Axboe wrote: > Are you easily able to test a patch out? Yes. > Having a > test case on your machine that is as easily reproducible as it seems to > be, would be a great place to test ideas out. Maybe I should now also try to build CFQ (and the other schedulers, I guess) as a module (instead of Fedora's default of builtin). That might make it both easier and quicker to iterate over a number of ideas. Does using the schedulers as modules require any handholding (on your part, I'm afraid) or is it not really different from using any other kernel module? Paul Bolle