From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752375Ab2A1XsM (ORCPT ); Sat, 28 Jan 2012 18:48:12 -0500 Received: from na3sys009aog101.obsmtp.com ([74.125.149.67]:37527 "EHLO na3sys009aog101.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751614Ab2A1XsL (ORCPT ); Sat, 28 Jan 2012 18:48:11 -0500 Message-ID: <4F248938.5030507@rgmadvisors.com> Date: Sat, 28 Jan 2012 17:48:08 -0600 From: Andrew Steets User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:9.0) Gecko/20111222 Thunderbird/9.0.1 MIME-Version: 1.0 To: Ingo Molnar CC: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Peter Zijlstra , Paul Mackerras , Arnaldo Carvalho de Melo Subject: Re: perf: prctl(PR_TASK_PERF_EVENTS_DISABLE) has no effect References: <4F22D8D9.3010108@rgmadvisors.com> <20120128120151.GA10390@elte.hu> In-Reply-To: <20120128120151.GA10390@elte.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/28/12 6:01 AM, Ingo Molnar wrote: >> prctl(PR_TASK_PERF_EVENTS_DISABLE) doesn't appear to disable >> perf event counters. Here is a demonstration program: > > btw., what's your usecase? > I'm trying to profile a small section of a long-running program. I ran into trouble using call-graph recording and I thought this might be an alternative way of getting what I was after. -Andrew -- --------------------------------------------------------------- This email, along with any attachments, is confidential. If you believe you received this message in error, please contact the sender immediately and delete all copies of the message. Thank you.