From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262426AbTEFHQq (ORCPT ); Tue, 6 May 2003 03:16:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262429AbTEFHQq (ORCPT ); Tue, 6 May 2003 03:16:46 -0400 Received: from 130.146.174.203.mel.ntt.net.au ([203.174.146.130]:42133 "EHLO enki.rimspace.net") by vger.kernel.org with ESMTP id S262426AbTEFHQo (ORCPT ); Tue, 6 May 2003 03:16:44 -0400 To: linux-kernel@vger.kernel.org Subject: CPUFreq sysfs interface MIA? From: Daniel Pittman Date: Tue, 06 May 2003 17:29:15 +1000 Message-ID: <873cjsv8hg.fsf@enki.rimspace.net> User-Agent: Gnus/5.090016 (Oort Gnus v0.16) XEmacs/21.5 (cabbage) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Under both 2.5.68 and 2.5.69 the CPUFreq /sys interface seems to be missing for my machine (IBM A31p), with an Intel 845 Brookdale chipset and SpeedStep support. It was certainly present around 2.5.67 or so, but seems to have vanished since that point. I have not yet tracked down exactly where it went MIA. Since I couldn't work out from either the documentation or the code if there should be a /sys/devices/sys/cpu0/cpufreq directory when the code is compiled in, but not active, I couldn't tell if this was failing to find the SpeedStep support now or if it simply lost the sysfs interface. When I compiled in the debug information to the SpeedStep driver, I only get the following output in dmesg: cpufreq: Intel(R) SpeedStep(TM) support $Revision: 1.70 $ The ACPI P-States driver and the P4 clock modulation driver don't work, or cause the interface directory to show either, but I have never had either of those two working before -- I tried them to try and eliminate a cause. The content of /sys/devices/sys/cpu0 is: /sys/devices/sys/cpu0 |-- name `-- power 0 directories, 2 files Daniel -- That's the point of quotations you know; one can use another's words to be insulting. -- Amanda Cross