From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Jones Subject: Re: restricting counted/sampled events Date: Mon, 16 Nov 2015 08:26:02 -0800 Message-ID: <564A039A.5050105@suse.de> References: <5644D7DA.7050200@suse.de> <20151112230807.GF7160@kernel.org> <20151116085952.GD5769@krava.brq.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: Received: from mx2.suse.de ([195.135.220.15]:59477 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753066AbbKPQdy (ORCPT ); Mon, 16 Nov 2015 11:33:54 -0500 In-Reply-To: <20151116085952.GD5769@krava.brq.redhat.com> Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: Jiri Olsa , Arnaldo Carvalho de Melo Cc: linux-perf-users@vger.kernel.org, Jiri Olsa , Stephane Eranian , Frederic Weisbecker On 11/16/2015 12:59 AM, Jiri Olsa wrote: > On Thu, Nov 12, 2015 at 08:08:07PM -0300, Arnaldo Carvalho de Melo wrote: >> Em Thu, Nov 12, 2015 at 10:18:02AM -0800, Tony Jones escreveu: >> >>> I don't believe there is current support to do this, but maybe I'm >>> overlooking something? >> >>> I'd like to be able to restrict the pmu (or filter results) to report >>> counting/sampling between two arbitrary code points, such as a >>> tracepoint or kprobe. >> >>> I believe it will require core perf changes and was curious on peoples >>> thoughts? >> >> Something like this: >> >> https://lkml.org/lkml/2013/9/25/227 >> >> Jiri? > > yep.. sounds like toggling ;-) this code was put aside ATM > > not sure it'll be ressurected soon, but I remember Stephane asked > me about that some time ago (CC-ed), maybe he has more info > > jirka If noone is currently working on it, I'd be interested in taking it over. Tony