From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934287AbYETSPT (ORCPT ); Tue, 20 May 2008 14:15:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933205AbYETSJi (ORCPT ); Tue, 20 May 2008 14:09:38 -0400 Received: from g1t0028.austin.hp.com ([15.216.28.35]:4350 "EHLO g1t0028.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933431AbYETSJh (ORCPT ); Tue, 20 May 2008 14:09:37 -0400 Message-ID: <483313DD.2020904@hp.com> Date: Tue, 20 May 2008 14:09:33 -0400 From: "Alan D. Brunelle" User-Agent: Thunderbird 2.0.0.14 (X11/20080505) MIME-Version: 1.0 To: "linux-kernel@vger.kernel.org" Subject: /proc/lock_stat "stuck" Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I'm attempting to use /proc/lock_stat to gather some information during some benchmarking runs, but what I find happens is as follows: 1. I boot the system - 2.6.26-rc3 kernel + CONFIG_LOCK_STAT=y 2. I can then look at /proc/lock_stat, and it has valid-looking values 3. I wait a while, do some stuff, but when I look at /proc/lock_stat again the values have not changed. 4. If I clear the counters - echo 0 > /proc/lock_stat - the counters never increase, and no information besides the headers are output when I cat /proc/lock_stat. Is there something that one needs to do to get counter updates? Thanks, Alan D. Brunelle