From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753187Ab0JMHXZ (ORCPT ); Wed, 13 Oct 2010 03:23:25 -0400 Received: from canuck.infradead.org ([134.117.69.58]:39428 "EHLO canuck.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753120Ab0JMHXY convert rfc822-to-8bit (ORCPT ); Wed, 13 Oct 2010 03:23:24 -0400 Subject: Re: [RFC PATCH 4/9] perf: Don't record frame pointer based user stacktraces if we dump stack and regs From: Peter Zijlstra To: Frederic Weisbecker Cc: LKML , Ingo Molnar , Arnaldo Carvalho de Melo , Paul Mackerras , Stephane Eranian , Cyrill Gorcunov , Tom Zanussi , Masami Hiramatsu , Steven Rostedt , Robert Richter In-Reply-To: <1286946421-32202-5-git-send-regression-fweisbec@gmail.com> References: <1286946421-32202-1-git-send-regression-fweisbec@gmail.com> <1286946421-32202-5-git-send-regression-fweisbec@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Wed, 13 Oct 2010 09:23:06 +0200 Message-ID: <1286954586.29097.60.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2010-10-13 at 07:06 +0200, Frederic Weisbecker wrote: > User and kernel stack might be selected for other uses than callchain > in the future, this probably shouldn't mess with the regular callchain > code. Instead we should probably have an exclude_callchain_user > attribute, that could be also useful to filter out user callchains > when people don't want them. Probably ;-)