From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A74DFC4646A for ; Wed, 12 Sep 2018 09:13:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 52A4220866 for ; Wed, 12 Sep 2018 09:13:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 52A4220866 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728151AbeILORV (ORCPT ); Wed, 12 Sep 2018 10:17:21 -0400 Received: from foss.arm.com ([217.140.101.70]:55880 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728068AbeILORU (ORCPT ); Wed, 12 Sep 2018 10:17:20 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3C9DB1682; Wed, 12 Sep 2018 02:13:43 -0700 (PDT) Received: from queper01-lin.local (queper01-lin.emea.arm.com [10.4.13.27]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2527C3F703; Wed, 12 Sep 2018 02:13:39 -0700 (PDT) From: Quentin Perret To: peterz@infradead.org, rjw@rjwysocki.net, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Cc: gregkh@linuxfoundation.org, mingo@redhat.com, dietmar.eggemann@arm.com, morten.rasmussen@arm.com, chris.redpath@arm.com, patrick.bellasi@arm.com, valentin.schneider@arm.com, vincent.guittot@linaro.org, thara.gopinath@linaro.org, viresh.kumar@linaro.org, tkjos@google.com, joel@joelfernandes.org, smuckle@google.com, adharmap@codeaurora.org, skannan@codeaurora.org, pkondeti@codeaurora.org, juri.lelli@redhat.com, edubezval@gmail.com, srinivas.pandruvada@linux.intel.com, currojerez@riseup.net, javi.merino@kernel.org, quentin.perret@arm.com Subject: [PATCH v7 05/14] sched: Introduce a sched_feat for Energy Aware Scheduling Date: Wed, 12 Sep 2018 10:13:00 +0100 Message-Id: <20180912091309.7551-6-quentin.perret@arm.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180912091309.7551-1-quentin.perret@arm.com> References: <20180912091309.7551-1-quentin.perret@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In order to make sure Energy Aware Scheduling (EAS) doesn't hurt systems not using it, add a new sched_feat, called ENERGY_AWARE, guarding the access to EAS code paths. Signed-off-by: Quentin Perret --- kernel/sched/features.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 85ae8488039c..26ff6752e492 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -90,3 +90,10 @@ SCHED_FEAT(WA_BIAS, true) * UtilEstimation. Use estimated CPU utilization. */ SCHED_FEAT(UTIL_EST, true) + +/* + * Energy-Aware Scheduling. Whether or not tasks will be placed into an + * energy-aware fashion depends on this feature being enabled and on the + * root domain having an Energy Model attached. + */ +SCHED_FEAT(ENERGY_AWARE, false) -- 2.18.0