From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S272650AbTHELRQ (ORCPT ); Tue, 5 Aug 2003 07:17:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S272651AbTHELRQ (ORCPT ); Tue, 5 Aug 2003 07:17:16 -0400 Received: from smtp-out2.iol.cz ([194.228.2.87]:33993 "EHLO smtp-out2.iol.cz") by vger.kernel.org with ESMTP id S272650AbTHELRP (ORCPT ); Tue, 5 Aug 2003 07:17:15 -0400 Date: Tue, 5 Aug 2003 13:16:47 +0200 From: Pavel Machek To: Wes Felter Cc: Xavier Bestel , Linux Kernel Mailing List Subject: Re: HELP: cpufreq on HT and/or SMP systems Message-ID: <20030805111647.GB329@elf.ucw.cz> References: <200307312353.54735.gallir@uib.es> <1059778307.1537.173.camel@bip.parateam.prv> <1059778865.23307.42.camel@arlx248.austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1059778865.23307.42.camel@arlx248.austin.ibm.com> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.3i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > > > AFAIK no SMP systems have voltage/frequency scaling (SpeedStep/PowerNow). > > > I've heard that ACPI P-states works on SMP, but if it's not doing > > > voltage/frequency scaling then I don't know what it's doing. > > > > I've got an ABit VP6 (VIA686, dual P3), and the processors speed and > > voltage can be set in the BIOS. Does it count ? > > I meant dynamic voltage/frequency scaling, so that doesn't count. If his bios can change voltage/frequency, kernel can probably do the same. So his hardware probably can be supported by cpufreq. Pavel -- When do you have a heart between your knees? [Johanka's followup: and *two* hearts?]