From patchwork Thu Jun 27 17:16:01 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Douglas RAILLARD X-Patchwork-Id: 11020119 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E578214C0 for ; Thu, 27 Jun 2019 17:16:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D5E4E28505 for ; Thu, 27 Jun 2019 17:16:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CA3D82855A; Thu, 27 Jun 2019 17:16:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 226BD28505 for ; Thu, 27 Jun 2019 17:16:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726645AbfF0RQX (ORCPT ); Thu, 27 Jun 2019 13:16:23 -0400 Received: from foss.arm.com ([217.140.110.172]:59240 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726619AbfF0RQX (ORCPT ); Thu, 27 Jun 2019 13:16:23 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 857E01477; Thu, 27 Jun 2019 10:16:22 -0700 (PDT) Received: from e107049-lin.arm.com (e107049-lin.cambridge.arm.com [10.1.195.43]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 2EFFD3F718; Thu, 27 Jun 2019 10:16:21 -0700 (PDT) From: Douglas RAILLARD To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, rjw@rjwysocki.net, viresh.kumar@linaro.org, quentin.perret@arm.com, douglas.raillard@arm.com, patrick.bellasi@arm.com, dietmar.eggemann@arm.com Subject: [RFC PATCH v2 3/5] sched/cpufreq: Hook em_pd_get_higher_power() into get_next_freq() Date: Thu, 27 Jun 2019 18:16:01 +0100 Message-Id: <20190627171603.14767-4-douglas.raillard@arm.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190627171603.14767-1-douglas.raillard@arm.com> References: <20190627171603.14767-1-douglas.raillard@arm.com> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Choose the highest OPP for a given energy cost, allowing to skip lower frequencies that would not be cheaper in terms of consumed power. These frequencies can still be interesting to keep in the energy model to give more freedom to thermal throttling, but should not be selected under normal circumstances. This also prepares the ground for energy-aware frequency boosting. Signed-off-by: Douglas RAILLARD --- kernel/sched/cpufreq_schedutil.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c index 0a3ccc20adeb..7ffc6fe3b670 100644 --- a/kernel/sched/cpufreq_schedutil.c +++ b/kernel/sched/cpufreq_schedutil.c @@ -10,6 +10,7 @@ #include "sched.h" +#include #include #include @@ -201,9 +202,16 @@ static unsigned int get_next_freq(struct sugov_policy *sg_policy, struct cpufreq_policy *policy = sg_policy->policy; unsigned int freq = arch_scale_freq_invariant() ? policy->cpuinfo.max_freq : policy->cur; + struct em_perf_domain *pd = sugov_policy_get_pd(sg_policy); freq = map_util_freq(util, freq, max); + /* + * Try to get a higher frequency if one is available, given the extra + * power we are ready to spend. + */ + freq = em_pd_get_higher_freq(pd, freq, 0); + if (freq == sg_policy->cached_raw_freq && !sg_policy->need_freq_update) return sg_policy->next_freq;