Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754589AbXFLCnu (ORCPT ); Mon, 11 Jun 2007 22:43:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751196AbXFLCnj (ORCPT ); Mon, 11 Jun 2007 22:43:39 -0400 Received: from ping.uio.no ([129.240.78.2]:40169 "EHLO ping.uio.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751127AbXFLCni (ORCPT ); Mon, 11 Jun 2007 22:43:38 -0400 X-Greylist: delayed 2901 seconds by postgrey-1.27 at vger.kernel.org; Mon, 11 Jun 2007 22:43:38 EDT From: ilmari@ilmari.org (Dagfinn Ilmari =?utf-8?Q?Manns=C3=A5ker?=) To: Arjan van de Ven Cc: Henrique de Moraes Holschuh , Kristen Carlson Accardi , jeff@garzik.org, james.bottomley@steeleye.com, linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, htejun@gmail.com Subject: Re: [patch 3/3] Enable Aggressive Link Power management for AHCI controllers. Organization: Program-, Informasjons- og Nettverksteknologisk Gruppe, UiO References: <20070611184146.448266229@intel.com> <20070611114839.907bcae2.kristen.c.accardi@intel.com> <20070612011148.GA9808@khazad-dum.debian.net> <466DF3E9.30303@linux.intel.com> Mail-Copies-To: nobody Date: Tue, 12 Jun 2007 02:54:52 +0100 In-Reply-To: <466DF3E9.30303@linux.intel.com> (Arjan van de Ven's message of "Mon, 11 Jun 2007 18:16:25 -0700") Message-ID: User-Agent: Gnus/5.110004 (No Gnus v0.4) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Exiscan-Spam-Score: -7.8 (-------) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1269 Lines: 34 Arjan van de Ven writes: > Henrique de Moraes Holschuh wrote: >> On Mon, 11 Jun 2007, Kristen Carlson Accardi wrote: >>> Setting Effect >>> ---------------------------------------------------------- >>> min_power ALPM is enabled, and link set to enter lowest >>> power state (SLUMBER) when idle >>> Hot plug not allowed. >>> >>> max_performance ALPM is disabled, Hot Plug is allowed >>> >>> medium_power ALPM is enabled, and link set to enter >>> second lowest power state (PARTIAL) when >>> idle. Hot plug not allowed. >> Just some food for thought: >> If you split it into a enable/disable (0/1) attribute, and a level >> attribute > > on/off doesn't really make sense if the question is "do you favor power > or do you favor performance"....... How about just making it a numeric scale with 0 meaning no power saving and then some fixed number of levels (e.g 0-9)? -- ilmari "A disappointingly low fraction of the human race is, at any given time, on fire." - Stig Sandbeck Mathisen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/