Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759274Ab1CDJln (ORCPT ); Fri, 4 Mar 2011 04:41:43 -0500 Received: from ns.dcl.info.waseda.ac.jp ([133.9.216.194]:55585 "EHLO ns.dcl.info.waseda.ac.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751834Ab1CDJlm (ORCPT ); Fri, 4 Mar 2011 04:41:42 -0500 Message-ID: <4D70B3E1.8020108@dcl.info.waseda.ac.jp> Date: Fri, 04 Mar 2011 18:41:53 +0900 From: Hitoshi Mitake User-Agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:2.0b10pre) Gecko/20110114 Thunderbird/3.3a2 MIME-Version: 1.0 To: Frederic Weisbecker CC: Peter Zijlstra , linux-kernel@vger.kernel.org, h.mitake@gmail.com, Paul Mackerras , Ingo Molnar , Arnaldo Carvalho de Melo , Steven Rostedt Subject: Re: [PATCH] perf lock: clean the options for perf record References: <1298388507-19774-1-git-send-email-mitake@dcl.info.waseda.ac.jp> <4D63D685.2010401@dcl.info.waseda.ac.jp> <1298389415.2217.243.camel@twins> <20110222182206.GB1799@nowhere> <4D648A65.2040107@dcl.info.waseda.ac.jp> <4D667D60.5010903@dcl.info.waseda.ac.jp> <20110224165014.GB1840@nowhere> <4D67E286.8010907@dcl.info.waseda.ac.jp> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1067 Lines: 25 On 03/01/11 23:55, Frederic Weisbecker wrote: > On Sat, Feb 26, 2011 at 02:10:30AM +0900, Hitoshi Mitake wrote: >> It seems that I was too preprocessed with the method and >> forgot the purpose... >> >> Maybe the things like simple lockstat visualizer or >> special diff between two lockstat snapshots are >> useful for the first looking at big picture. >> I feel that they have worth to write and test. > > Indeed they sound like good ideas. Being able to do a diff > on locks profiles would be useful to compare two changes on > the kernel. > BTW, how do you think about the idea of exporting data in python (or other neutral) expression from procfs? I feel it is a good idea. Communicating with unified format between user space and kernel space will reduce lots of parsing overhead. Is this too aggressive or insane? -- 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/