From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Subject: Re: [RFC][PATCH v5 00/14] sched: packing tasks Date: Wed, 13 Nov 2013 09:56:28 -0800 Message-ID: <5283BD4C.3040600@linux.intel.com> References: <1382097147-30088-1-git-send-email-vincent.guittot@linaro.org> <20131111163630.GD26898@twins.programming.kicks-ass.net> <52810851.4090907@linux.intel.com> <20131111181805.GE29572@arm.com> <52825BE9.2080605@linux.intel.com> <42638CC1-ACC7-4330-A4F4-D78C88BE8155@arm.com> <5283A545.4040406@linux.intel.com> <20131113164457.GF18837@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mga11.intel.com ([192.55.52.93]:19454 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755123Ab3KMR4a (ORCPT ); Wed, 13 Nov 2013 12:56:30 -0500 In-Reply-To: <20131113164457.GF18837@arm.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Catalin Marinas Cc: Peter Zijlstra , Vincent Guittot , linux-kernel , Ingo Molnar , Paul Turner , Morten Rasmussen , Chris Metcalf , Tony Luck , "alex.shi@intel.com" , Preeti U Murthy , linaro-kernel , "len.brown@intel.com" , "l.majewski@samsung.com" , Jonathan Corbet , "Rafael J. Wysocki" , Paul McKenney , "linux-pm@vger.kernel.org" >> for picking the cpu to wake on there are also low level physical kind of things >> we'd want to take into account on the intel side. > > Are these static and could they be hidden behind some cost number in a > topology description? If they are dynamic, we would need arch or driver > hooks to give some cost or priority number that the scheduler can use. they're dynamic but slow moving (say, reevaluated once per second) so we could have a static table that some driver updates async