From owner-freebsd-acpi@FreeBSD.ORG Wed Nov 30 18:05:39 2005 Return-Path: X-Original-To: freebsd-acpi@freebsd.org Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 19B7016A41F; Wed, 30 Nov 2005 18:05:39 +0000 (GMT) (envelope-from nate@root.org) Received: from www.cryptography.com (li-22.members.linode.com [64.5.53.22]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2558C43D6E; Wed, 30 Nov 2005 18:05:12 +0000 (GMT) (envelope-from nate@root.org) Received: from [10.0.0.33] (adsl-67-119-74-222.dsl.sntc01.pacbell.net [67.119.74.222]) by www.cryptography.com (8.12.8/8.12.8) with ESMTP id jAUI5IZM018640 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 30 Nov 2005 10:05:19 -0800 Message-ID: <438DE9D0.6080107@root.org> Date: Wed, 30 Nov 2005 10:05:04 -0800 From: Nate Lawson User-Agent: Mozilla Thunderbird 1.0.6 (Windows/20050716) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Marco Calviani References: <20051130133224.GA4713@poupinou.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-acpi@freebsd.org, freebsd-stable@freebsd.org, freebsd-questions@freebsd.org Subject: Re: cpufreq and changing driver X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Nov 2005 18:05:39 -0000 Marco Calviani wrote: > Hi, > > 2005/11/30, Bruno Ducrot : > >>You have to load the cpufreq.ko module at boot. >>Adding that line: >>cpufreq_load = "YES" >>to /boot/loader.conf >>should be OK. > > > I have that line in that position, and it seems working. The point is > that i would like to change the driver and use (AFAIU) a better driver > for my system (est). > In particular i have: > > dev.cpu.0.%desc: ACPI CPU > dev.cpu.0.%driver: cpu > dev.cpu.0.%location: handle=\_PR_.CPU0 > dev.cpu.0.%pnpinfo: _HID=none _UID=0 > dev.cpu.0.%parent: acpi0 > > Maybe i didn't understood well: but what i have to do to use the Intel > Enhanced SpeedStep driver? You should send the full output of "sysctl dev.cpu". There is no cpufreq driver (est, acpi_perf, or other) driver running. Perhaps look at your dmesg to see if one is probing/attaching. If you are using acpi and load cpufreq.ko, you've got all the cpufreq drivers in one package. The right one for your platform will automatically probe/attach. >>powerd need some rework in order to get it working properly. There >>is one FreeBSD project on that subject if you are interrested. > > Well, thanks i'm very interested, although i'm not at all experienced > in kernel programming.... > > I'm not inside this issue, but it would not be possible to "emulate" > the behaviour of the ondemand governor? (sorry if this question makes > no sense) I have no idea what you mean by "on-demand governor". The only automated control of cpu speed is either by the BIOS (which we can't control) or the TM/TM2 (and that one is heat-based, not load-based). -- Nate