From patchwork Fri Mar 24 14:08:56 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juri Lelli X-Patchwork-Id: 9642861 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 284F9601E9 for ; Fri, 24 Mar 2017 14:09:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 171DA26907 for ; Fri, 24 Mar 2017 14:09:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0B99A269DA; Fri, 24 Mar 2017 14:09:41 +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=-6.9 required=2.0 tests=BAYES_00,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 3C2F426907 for ; Fri, 24 Mar 2017 14:09:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934155AbdCXOJc (ORCPT ); Fri, 24 Mar 2017 10:09:32 -0400 Received: from foss.arm.com ([217.140.101.70]:41204 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757103AbdCXOJ1 (ORCPT ); Fri, 24 Mar 2017 10:09:27 -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 B9B81B16; Fri, 24 Mar 2017 07:09:20 -0700 (PDT) Received: from e106622-lin.cambridge.arm.com (e106622-lin.cambridge.arm.com [10.1.211.43]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5C4953F575; Fri, 24 Mar 2017 07:09:17 -0700 (PDT) From: Juri Lelli To: peterz@infradead.org, mingo@redhat.com, rjw@rjwysocki.net, viresh.kumar@linaro.org Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, tglx@linutronix.de, vincent.guittot@linaro.org, rostedt@goodmis.org, luca.abeni@santannapisa.it, claudio@evidence.eu.com, tommaso.cucinotta@santannapisa.it, bristot@redhat.com, mathieu.poirier@linaro.org, tkjos@android.com, joelaf@google.com, andresoportus@google.com, morten.rasmussen@arm.com, dietmar.eggemann@arm.com, patrick.bellasi@arm.com, juri.lelli@arm.com, Ingo Molnar , "Rafael J . Wysocki" Subject: [RFD PATCH 1/5] sched/cpufreq_schedutil: make use of DEADLINE utilization signal Date: Fri, 24 Mar 2017 14:08:56 +0000 Message-Id: <20170324140900.7334-2-juri.lelli@arm.com> X-Mailer: git-send-email 2.10.0 In-Reply-To: <20170324140900.7334-1-juri.lelli@arm.com> References: <20170324140900.7334-1-juri.lelli@arm.com> 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 SCHED_DEADLINE tracks active utilization signal with a per rq variable named running_bw. Make use of that to drive cpu frequency selection: add up FAIR and DEADLINE contribution to get the required CPU capacity to handle both requirements. Co-authored-by: Claudio Scordino Signed-off-by: Juri Lelli Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Rafael J. Wysocki Cc: Viresh Kumar Cc: Luca Abeni --- include/linux/sched/cpufreq.h | 2 -- kernel/sched/cpufreq_schedutil.c | 13 ++++++------- 2 files changed, 6 insertions(+), 9 deletions(-) diff --git a/include/linux/sched/cpufreq.h b/include/linux/sched/cpufreq.h index d2be2ccbb372..39640bb3a8ee 100644 --- a/include/linux/sched/cpufreq.h +++ b/include/linux/sched/cpufreq.h @@ -11,8 +11,6 @@ #define SCHED_CPUFREQ_DL (1U << 1) #define SCHED_CPUFREQ_IOWAIT (1U << 2) -#define SCHED_CPUFREQ_RT_DL (SCHED_CPUFREQ_RT | SCHED_CPUFREQ_DL) - #ifdef CONFIG_CPU_FREQ struct update_util_data { void (*func)(struct update_util_data *data, u64 time, unsigned int flags); diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c index f5ffe241812e..05f5625ea005 100644 --- a/kernel/sched/cpufreq_schedutil.c +++ b/kernel/sched/cpufreq_schedutil.c @@ -154,12 +154,11 @@ static unsigned int get_next_freq(struct sugov_policy *sg_policy, static void sugov_get_util(unsigned long *util, unsigned long *max) { struct rq *rq = this_rq(); - unsigned long cfs_max; + unsigned long dl_util = (rq->dl.running_bw * SCHED_CAPACITY_SCALE) >> 20; - cfs_max = arch_scale_cpu_capacity(NULL, smp_processor_id()); + *max = arch_scale_cpu_capacity(NULL, smp_processor_id()); - *util = min(rq->cfs.avg.util_avg, cfs_max); - *max = cfs_max; + *util = min(rq->cfs.avg.util_avg + dl_util, *max); } static void sugov_set_iowait_boost(struct sugov_cpu *sg_cpu, u64 time, @@ -207,7 +206,7 @@ static void sugov_update_single(struct update_util_data *hook, u64 time, if (!sugov_should_update_freq(sg_policy, time)) return; - if (flags & SCHED_CPUFREQ_RT_DL) { + if (flags & SCHED_CPUFREQ_RT) { next_f = policy->cpuinfo.max_freq; } else { sugov_get_util(&util, &max); @@ -242,7 +241,7 @@ static unsigned int sugov_next_freq_shared(struct sugov_cpu *sg_cpu) j_sg_cpu->iowait_boost = 0; continue; } - if (j_sg_cpu->flags & SCHED_CPUFREQ_RT_DL) + if (j_sg_cpu->flags & SCHED_CPUFREQ_RT) return policy->cpuinfo.max_freq; j_util = j_sg_cpu->util; @@ -278,7 +277,7 @@ static void sugov_update_shared(struct update_util_data *hook, u64 time, sg_cpu->last_update = time; if (sugov_should_update_freq(sg_policy, time)) { - if (flags & SCHED_CPUFREQ_RT_DL) + if (flags & SCHED_CPUFREQ_RT) next_f = sg_policy->policy->cpuinfo.max_freq; else next_f = sugov_next_freq_shared(sg_cpu);