From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 13 Jun 2001 18:14:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 13 Jun 2001 18:13:55 -0400 Received: from paloma13.e0k.nbg-hannover.de ([62.159.219.13]:32157 "HELO paloma13.e0k.nbg-hannover.de") by vger.kernel.org with SMTP id ; Wed, 13 Jun 2001 18:13:46 -0400 Content-Type: text/plain; charset="iso-8859-1" From: Dieter =?iso-8859-1?q?N=FCtzel?= Organization: DN To: Arjan van de Ven Subject: Re: Changing CPU Speed while running Linux Date: Thu, 14 Jun 2001 00:23:07 +0200 X-Mailer: KMail [version 1.2.2] Cc: Linux Kernel List , Linux ACPI List MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-Id: <20010613221355Z264238-17720+3532@vger.kernel.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Arjan van de Ven wrote: > > Sven Geggus wrote: > > > > Hi there, > > > > on my Elan410 based System it is very easy to change the CPU clock > > speed by means od two outb commands. > > > > I was wondering, if it does some harm to the Kernel if the CPU is > > reprogrammed using a different CPU clock speed, while the system is up and > > running. > > I have a module for the K6 PowerNow which allows you to do > > echo 450 > /proc/sys/cpu/0/frequency > > and does the right thing wrt udelay / bogomips etc.. > I can dig it out if you want.. sounds like this should be a more generic > thing. Yes, please. After (all) Athlon 4/MT (Palomino) and Duron mobile feature PowerNow! it should be usefull for more and more people. Regards, Dieter BTW I think there are only a "few" K6-2+/K6-III+ out ;-) But PowerNow! is nice stuff. I had an eye on an 1 GHz Palomino at CeBIT '2001. -- Dieter Nützel Graduate Student, Computer Science University of Hamburg Department of Computer Science Cognitive Systems Group Vogt-Kölln-Straße 30 D-22527 Hamburg, Germany email: nuetzel@kogs.informatik.uni-hamburg.de @home: Dieter.Nuetzel@hamburg.de