From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262468AbUCRJml (ORCPT ); Thu, 18 Mar 2004 04:42:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262471AbUCRJmk (ORCPT ); Thu, 18 Mar 2004 04:42:40 -0500 Received: from main.gmane.org ([80.91.224.249]:34192 "EHLO main.gmane.org") by vger.kernel.org with ESMTP id S262468AbUCRJmj (ORCPT ); Thu, 18 Mar 2004 04:42:39 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Pasi Savolainen Subject: Re: add lowpower_idle sysctl Date: Thu, 18 Mar 2004 09:42:32 +0000 (UTC) Message-ID: References: <200403180031.i2I0VQF02038@unix-os.sc.intel.com> <20040317170436.430acfbe.akpm@osdl.org> X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: a11a.mannikko1.ton.tut.fi User-Agent: slrn/0.9.8.0 (Linux) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Andrew Morton : > "Kenneth Chen" wrote: >> >> On ia64, we need runtime control to manage CPU power state in the idle >> loop. > > Can you expand on this? Does this mean that the admin can select different > idle-loop algorithms? If so, what alternative algorithms exist? At least on 760MPX chipset, when Athlon is pushed into powersaving mode (disconnected from PCI bus) great deal of graphical distortions are introduced into bttv -based card's picture. I've dealt with this by rmmod:ing amd76x_pm -module (this action disables powersaving mode), but some sane API for disabling these disturbancies would be much better. -- Psi --