From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752003Ab2ALBlI (ORCPT ); Wed, 11 Jan 2012 20:41:08 -0500 Received: from lo.gmane.org ([80.91.229.12]:41127 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751812Ab2ALBlE (ORCPT ); Wed, 11 Jan 2012 20:41:04 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Namhyung Kim Subject: Re: [PATCH RESEND 9/9] block, trace: implement ioblame - IO tracer with origin tracking Date: Thu, 12 Jan 2012 10:40:44 +0900 Message-ID: <4F0E3A1C.5000105@gmail.com> References: <1326220106-5765-1-git-send-email-tj@kernel.org> <1326220106-5765-10-git-send-email-tj@kernel.org> <20120111013212.GA6843@dhcp-172-17-108-109.mtv.corp.google.com> <4F0D291A.8030205@lge.com> <20120111170635.GE26832@google.com> <4F0E31D9.3080306@lge.com> <4F0E38E6.4070606@lge.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org Cc: Namhyung Kim , axboe@kernel.dk, mingo@redhat.com, rostedt@goodmis.org, fweisbec@gmail.com, teravest@google.com, slavapestov@google.com, ctalbott@google.com, dhsharp@google.com, linux-kernel@vger.kernel.org, winget@google.com, Chanho Park X-Gmane-NNTP-Posting-Host: 121.50.20.41 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:8.0) Gecko/20111105 Thunderbird/8.0 In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2012-01-12 10:37 AM, Tejun Heo wrote: > Hello, > > On Wed, Jan 11, 2012 at 5:35 PM, Namhyung Kim wrote: >> Why do we need to trigger the TP for existing ones as we keep each entry at >> its creation? Maybe I'm missing something? > > If a userland program starts to watch the TP after some intents are > created, how is it gonna find out the existing ones? > Hi, OK, but that can be controlled from userspace, I guess? Do we have to care about that? Thanks, Namhyung Kim