From patchwork Wed Apr 6 22:08:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Luba X-Patchwork-Id: 558470 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F356C433EF for ; Wed, 6 Apr 2022 22:08:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236973AbiDFWK2 (ORCPT ); Wed, 6 Apr 2022 18:10:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236957AbiDFWK1 (ORCPT ); Wed, 6 Apr 2022 18:10:27 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1AE3F1D08F8; Wed, 6 Apr 2022 15:08:30 -0700 (PDT) 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 DBEA612FC; Wed, 6 Apr 2022 15:08:29 -0700 (PDT) Received: from e123648.arm.com (unknown [10.57.9.217]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id F14B83F5A1; Wed, 6 Apr 2022 15:08:27 -0700 (PDT) From: Lukasz Luba To: linux-kernel@vger.kernel.org Cc: lukasz.luba@arm.com, dietmar.eggemann@arm.com, viresh.kumar@linaro.org, rafael@kernel.org, daniel.lezcano@linaro.org, amitk@kernel.org, rui.zhang@intel.com, amit.kachhap@gmail.com, linux-pm@vger.kernel.org Subject: [RFC PATCH v3 2/5] cpuidle: Add Cpufreq Active Stats calls tracking idle entry/exit Date: Wed, 6 Apr 2022 23:08:06 +0100 Message-Id: <20220406220809.22555-3-lukasz.luba@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220406220809.22555-1-lukasz.luba@arm.com> References: <20220406220809.22555-1-lukasz.luba@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The Cpufreq Active Stats tracks and accounts the activity of the CPU for each performance level. It accounts the real residency, when the CPU was not idle, at a given performance level. This patch adds needed calls which provide the CPU idle entry/exit events to the Cpufreq Active Stats. Signed-off-by: Lukasz Luba --- drivers/cpuidle/cpuidle.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index ef2ea1b12cd8..f19711b95afb 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -231,6 +232,8 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, trace_cpu_idle(index, dev->cpu); time_start = ns_to_ktime(local_clock()); + cpufreq_active_stats_cpu_idle_enter(time_start); + stop_critical_timings(); if (!(target_state->flags & CPUIDLE_FLAG_RCU_IDLE)) rcu_idle_enter(); @@ -243,6 +246,8 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, time_end = ns_to_ktime(local_clock()); trace_cpu_idle(PWR_EVENT_EXIT, dev->cpu); + cpufreq_active_stats_cpu_idle_exit(time_end); + /* The cpu is no longer idle or about to enter idle. */ sched_idle_set_state(NULL);