Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751791AbcDUASf (ORCPT ); Wed, 20 Apr 2016 20:18:35 -0400 Received: from mail.kernel.org ([198.145.29.136]:45436 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751335AbcDUASd (ORCPT ); Wed, 20 Apr 2016 20:18:33 -0400 Date: Wed, 20 Apr 2016 21:18:28 -0300 From: Arnaldo Carvalho de Melo To: David Ahern Cc: Arnaldo Carvalho de Melo , Peter Zijlstra , Frederic Weisbecker , Ingo Molnar , Adrian Hunter , Brendan Gregg , Alexander Shishkin , Alexei Starovoitov , He Kuang , Jiri Olsa , Masami Hiramatsu , Milian Wolff , Namhyung Kim , Stephane Eranian , Thomas Gleixner , Vince Weaver , Wang Nan , Zefan Li , Linux Kernel Mailing List Subject: Re: [PATCH/RFC] perf core: Allow setting up max frame stack depth via sysctl Message-ID: <20160421001828.GY3677@kernel.org> References: <20160420224730.GX3677@kernel.org> <57180C59.4010803@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <57180C59.4010803@gmail.com> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 659 Lines: 17 Em Wed, Apr 20, 2016 at 05:10:17PM -0600, David Ahern escreveu: > On 4/20/16 4:47 PM, Arnaldo Carvalho de Melo wrote: > > # echo 256 > /proc/sys/kernel/perf_event_max_stack > > # cat /proc/sys/kernel/perf_event_max_stack > > 256 > I would love to see something like this go in. Right now I have to recompile > the kernel because I want a lower max count. > In the past we talked about about making this part of the attribute with > separate controls for both kernel stack and userspace stack. Have you given > up on that option? Nope, I'll try to work on that too, I even mentioned it above, the part "one per event remains to be done". - Arnaldo