From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752093AbZBQHAX (ORCPT ); Tue, 17 Feb 2009 02:00:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751118AbZBQHAJ (ORCPT ); Tue, 17 Feb 2009 02:00:09 -0500 Received: from e23smtp08.au.ibm.com ([202.81.31.141]:33639 "EHLO e23smtp08.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751093AbZBQHAI (ORCPT ); Tue, 17 Feb 2009 02:00:08 -0500 Date: Tue, 17 Feb 2009 12:29:56 +0530 From: Gautham R Shenoy To: Peter Zijlstra Cc: linux-kernel@vger.kernel.org, svaidy@linux.vnet.ibm.com, mingo@elte.hu, suresh.b.siddha@intel.com, balbir@in.ibm.com, dipankar@in.ibm.com, efault@gmx.de, andi@firstfloor.org Subject: Re: [PATCH 2/3] sched: Fix the wakeup nomination for sched_mc/smt_power_savings. Message-ID: <20090217065956.GB28515@in.ibm.com> Reply-To: ego@in.ibm.com References: <20090216164719.12804.37013.stgit@sofia.in.ibm.com> <20090216165111.12804.41620.stgit@sofia.in.ibm.com> <1234806323.30178.189.camel@laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1234806323.30178.189.camel@laptop> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 16, 2009 at 06:45:23PM +0100, Peter Zijlstra wrote: > On Mon, 2009-02-16 at 22:21 +0530, Gautham R Shenoy wrote: > > @@ -520,6 +520,11 @@ struct root_domain { > > * low system utilisation. Triggered at POWERSAVINGS_BALANCE_WAKEUP(2) > > */ > > unsigned int sched_mc_preferred_wakeup_cpu; > > + /* > > + * The sched-domain level which is authorized to nominate the preferred > > + * wake up cpu. > > + */ > > + enum sched_domain_level authorized_nomination_level > > Some day my brain is just going to explode.. ;-) > > Can we do a nice concise writeup of the power-save dynamics somewhere? Sure, will work on that one. -- Thanks and Regards gautham