Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754580Ab3G3QQo (ORCPT ); Tue, 30 Jul 2013 12:16:44 -0400 Received: from merlin.infradead.org ([205.233.59.134]:53726 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752310Ab3G3QQn (ORCPT ); Tue, 30 Jul 2013 12:16:43 -0400 Date: Tue, 30 Jul 2013 18:16:29 +0200 From: Peter Zijlstra To: Stephane Eranian Cc: Ingo Molnar , LKML , "mingo@elte.hu" , "ak@linux.intel.com" , Arnaldo Carvalho de Melo , Jiri Olsa , Namhyung Kim Subject: Re: [PATCH 0/8] perf: add ability to sample physical data addresses Message-ID: <20130730161629.GC32226@laptop.programming.kicks-ass.net> References: <20130708081919.GV23916@twins.programming.kicks-ass.net> <20130730083758.GH3008@twins.programming.kicks-ass.net> <20130730090202.GL3008@twins.programming.kicks-ass.net> <20130730155212.GB32226@laptop.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1035 Lines: 24 On Tue, Jul 30, 2013 at 06:09:15PM +0200, Stephane Eranian wrote: > On Tue, Jul 30, 2013 at 5:52 PM, Peter Zijlstra wrote: > > On Tue, Jul 30, 2013 at 04:21:41PM +0200, Stephane Eranian wrote: > >> Peter, > >> > >> One thing that bothers me with the MMAP2 approach is that > >> it forces integration into perf. > > > > This is a good (TM) thing, yes? ;-) > > > > Well, that's one way to look at it. But I'd like the API to > be able to support more than one tool easily. If the barrier > for any advanced analysis is too high from the raw kernel > API then we will only have one tool. I don't think that sane. Sure, but any half-way usable profiling will need the existing sideband data. So I don't think that relying on it for this particular feature is too much. -- 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/