From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754603AbZEWVtn (ORCPT ); Sat, 23 May 2009 17:49:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754049AbZEWVtg (ORCPT ); Sat, 23 May 2009 17:49:36 -0400 Received: from yx-out-2324.google.com ([74.125.44.28]:16811 "EHLO yx-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753746AbZEWVtg convert rfc822-to-8bit (ORCPT ); Sat, 23 May 2009 17:49:36 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=nHQETxMO9oAaeeDcEtiO0GmY8kP26iKjX8ILgjfOAaOWGvnjENoA2UUAPG6pj3s3ir 03gyBhNZqxHRiLj/ugYQOJoUuzIGTs3nOTwHJHdrp9cU7bf9UJ1qpsCBGCSaG3PqkvwB tzYM/U5HDVcL48femVr6wwdwi4R6KBmhzvkNs= MIME-Version: 1.0 In-Reply-To: <20090523140830.5bff23c3@infradead.org> References: <20090523140830.5bff23c3@infradead.org> Date: Sat, 23 May 2009 14:49:36 -0700 Message-ID: Subject: Re: running the kernel without hal= how safe with the cpufreq From: Justin Mattock To: Arjan van de Ven Cc: Linux Kernel Mailing List Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 23, 2009 at 2:08 PM, Arjan van de Ven wrote: > On Sat, 23 May 2009 11:29:29 -0700 > Justin Mattock wrote: > >> I'm in the process of building a system >> minus hal(since udev 142 explains itself >> in the README), >> Anyways I normally just have >> "ondemand" compiled as the main >> cpufreq module, and have no powermgnt or cpufreq >> userspace tool except or was hal. >> should I be concerned >> without having hal due to things like this in >> ps auxZ > > if you use ondemand you don't need anything else; the defaults > are good and in fact very very few people (if anyone) should ever > change the tunables (they're more aimed for the ondemand developers). > > Any application that touches these tunables is basically broken ;) > > In addition, you should always be safe against hardware breaking, > as long as you don't do things like poke chipset registers to disable > SMM etc, there is thermal protection build into the system. > First it will automatically slow down the CPU (a lot), and if that is > not sufficient/fast enough, the system will shut down before it lets > itself be damaged. > > > > -- > Arjan van de Ven        Intel Open Source Technology Centre > For development, discussion and tips for power savings, > visit http://www.lesswatts.org > cool, alright then my system will have no powerdaemon, just the kernel running all of the powermgnt. (with doing a simple watch cat /proc/cpuinfo) I notice the cores will spike to full throttle simultaneously and then lower to low once a job is done) :^) regards, -- Justin P. Mattock