From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753298Ab2A3Fvs (ORCPT ); Mon, 30 Jan 2012 00:51:48 -0500 Received: from LGEMRELSE1Q.lge.com ([156.147.1.111]:46493 "EHLO LGEMRELSE1Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751937Ab2A3Fvr (ORCPT ); Mon, 30 Jan 2012 00:51:47 -0500 X-AuditID: 9c93016f-b7c20ae000005067-8c-4f262ff18bd9 Message-ID: <4F262FEF.9020406@gmail.com> Date: Mon, 30 Jan 2012 14:51:43 +0900 From: Namhyung Kim User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:9.0) Gecko/20111222 Thunderbird/9.0.1 MIME-Version: 1.0 Newsgroups: gmane.linux.kernel,gmane.linux.kernel.device-mapper.devel To: Tejun Heo CC: Jens Axboe , linux-kernel@vger.kernel.org, Steven Rostedt , dm-devel@redhat.com Subject: Re: [PATCH] block: add missing block_bio_complete() tracepoint References: <1327830093-12130-1-git-send-email-namhyung@gmail.com> <20120129192447.GB17211@htj.dyndns.org> <4F25F5F3.6060507@gmail.com> <20120130014703.GG17211@htj.dyndns.org> <4F25FEE5.5010309@gmail.com> <20120130023012.GH17211@htj.dyndns.org> <4F260547.1030405@gmail.com> <20120130025326.GI17211@htj.dyndns.org> In-Reply-To: <20120130025326.GI17211@htj.dyndns.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, 2012-01-30 11:53 AM, Tejun Heo wrote: > Hello, > > On Mon, Jan 30, 2012 at 11:49:43 AM +0900, Namhyung Kim wrote: >> Yes, blktrace will see both of completions for rq and bio's it >> contains from now on, and I thought it's your intention? For the >> bounced bio's, it'll see one more completion per bio. > > Umm... no, blktrace users shouldn't see confusing outputs. My point > was that we should leave raw tracepoints as raw monitor points so that > they can provide raw data to different users and filter from > blktrace.c so that the existing users aren't disturbed. > That means blktrace should not be changed, and not see duplicated completions for rq based drivers at all? Thanks, Namhyung