Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762851AbbEES3G (ORCPT ); Tue, 5 May 2015 14:29:06 -0400 Received: from mail-la0-f44.google.com ([209.85.215.44]:35418 "EHLO mail-la0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755992AbbEES3D (ORCPT ); Tue, 5 May 2015 14:29:03 -0400 MIME-Version: 1.0 In-Reply-To: <1648396.IQ1a4yUHOD@vostro.rjw.lan> References: <1430777441-15087-1-git-send-email-mturquette@linaro.org> <1648396.IQ1a4yUHOD@vostro.rjw.lan> From: Mike Turquette Date: Tue, 5 May 2015 11:28:41 -0700 Message-ID: Subject: Re: [PATCH 0/4] scheduler-based cpu frequency scaling To: "Rafael J. Wysocki" Cc: Peter Zijlstra , Ingo Molnar , "linux-kernel@vger.kernel.org" , Preeti U Murthy , Morten Rasmussen , riel , efault@gmx.de, Nicolas Pitre , Daniel Lezcano , Dietmar Eggemann , Vincent Guittot , Amit Kucheria , Juri Lelli , Viresh Kumar , Ashwin Chaugule , Alex Shi Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2812 Lines: 65 On Mon, May 4, 2015 at 4:27 PM, Rafael J. Wysocki wrote: > On Monday, May 04, 2015 03:10:37 PM Michael Turquette wrote: >> This series implements an event-driven cpufreq governor that scales cpu >> frequency as a function of cfs runqueue utilization. The intent of this RFC is >> to get some discussion going about how the scheduler can become the policy >> engine for selecting cpu frequency, what limitations exist and what design do >> we want to take to get to a solution. >> >> This work is a different take on the patches I posted in November: >> http://lkml.kernel.org/r/<1413958051-7103-1-git-send-email-mturquette@linaro.org> >> >> This series depends on having frequency-invariant representations for load. >> This requires Vincent's recently merged cpu capacity rework patches, as well as >> a new patch from Morten included here. Morten's patch will likely make an >> appearance in his energy aware scheduling v4 series. >> >> Thanks to Juri Lelli for contributing to the development >> of the governor. >> >> A git branch with these patches can be pulled from here: >> https://git.linaro.org/people/mike.turquette/linux.git sched-freq >> >> Smoke testing has been done on an OMAP4 Pandaboard and an Exynos 5800 >> Chromebook2. Extensive benchmarking and regression testing has not yet been >> done. Before sinking too much time into extensive testing I'd like to get >> feedback on the general design. >> >> Michael Turquette (3): >> sched: sched feature for cpu frequency selection >> sched: export get_cpu_usage & capacity_orig_of >> sched: cpufreq_sched_cfs: PELT-based cpu frequency scaling >> >> Morten Rasmussen (1): >> arm: Frequency invariant scheduler load-tracking support >> >> arch/arm/include/asm/topology.h | 7 + >> arch/arm/kernel/smp.c | 53 ++++++- >> arch/arm/kernel/topology.c | 17 +++ >> drivers/cpufreq/Kconfig | 24 ++++ >> include/linux/cpufreq.h | 3 + >> kernel/sched/Makefile | 1 + >> kernel/sched/cpufreq_cfs.c | 311 ++++++++++++++++++++++++++++++++++++++++ >> kernel/sched/fair.c | 48 +++---- >> kernel/sched/features.h | 6 + >> kernel/sched/sched.h | 39 +++++ >> 10 files changed, 475 insertions(+), 34 deletions(-) >> create mode 100644 kernel/sched/cpufreq_cfs.c > > Can you *please* always CC PM-related patches to linux-pm? Will do. Apologies for the oversight. Regards, Mike > > > -- > I speak only for myself. > Rafael J. Wysocki, Intel Open Source Technology Center. -- 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/