From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751323AbWDES12 (ORCPT ); Wed, 5 Apr 2006 14:27:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751322AbWDES12 (ORCPT ); Wed, 5 Apr 2006 14:27:28 -0400 Received: from prgy-npn2.prodigy.com ([207.115.54.38]:3767 "EHLO oddball.prodigy.com") by vger.kernel.org with ESMTP id S1751321AbWDES11 (ORCPT ); Wed, 5 Apr 2006 14:27:27 -0400 Message-ID: <4432C973.9080509@tmr.com> Date: Tue, 04 Apr 2006 15:30:59 -0400 From: Bill Davidsen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a1) Gecko/20060330 SeaMonkey/1.5a MIME-Version: 1.0 To: Jeff Garzik CC: Mattia Dongili , Alejandro Bonilla , linux-kernel@vger.kernel.org Subject: Re: Dual Core on Linux questions References: <88056F38E9E48644A0F562A38C64FB6007A24C46@scsmsx403.amr.corp.intel.com> <442219A4.3080801@garzik.org> <442AE55B.5020007@tmr.com> <442C4034.1060203@garzik.org> In-Reply-To: <442C4034.1060203@garzik.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jeff Garzik wrote: > Bill Davidsen wrote: >> Jeff Garzik wrote: >>> Pallipadi, Venkatesh wrote: >>>>> From cpufreq perspective multiple things are possible in the way >>>> processor will support the multi-core frequency changing. and most of >>>> the things are handled at cpufreq inside kernel. I think there >>>> should be >>>> minima changes required in cpufreqd if any. >>>> Options: >>> >>> >>> 4) we power down a core. >>> >> Is this just for completeness of the set, something someone might do >> someday, or does someone really have a hotplug core product? > > Not hotplug, just power it down. > Is that actually possible on any current hardware? I didn't see it in any doc I have, but it's all "CPU specs for dummies." ;-)