From patchwork Fri Aug 25 14:31:58 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dietmar Eggemann X-Patchwork-Id: 111020 Delivered-To: patch@linaro.org Received: by 10.37.128.210 with SMTP id c18csp1045367ybm; Fri, 25 Aug 2017 07:32:37 -0700 (PDT) X-Received: by 10.84.254.8 with SMTP id b8mr11333357plm.264.1503671557304; Fri, 25 Aug 2017 07:32:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1503671557; cv=none; d=google.com; s=arc-20160816; b=XwicdTaPogm7jDQ5TuKWlhuCHMaYuWUlW85HIUH4DY4oANufymICD19x5Nd36u8Mh7 dWbblD1MEWdU9X0mBgUH6jGShbVzhUBQrYjfy9CubKbEcGR1966f7mKbZYMExkzuxZw0 FmwBTaQm3FzQBlxJcWps4Id1YigDbSnhyiFP6PiJBG0CFsFeOXbUhjtrPJOaf8aLPX8u Z4LRg/E6l+4+rt16Bm1K9Brb/t2K44Os8eTOvzzmbLkvuD7NZd8FvhZCWE9oVptNdzZv Wdv1iPA0rYxu9C4jIPBVp6XaskHiFueqFibkByEtXZ6y3DwaJthBS8DjJ4+V6ad58geX j/mA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=raWt3z4ButWldfBs1dpijJVxjqc4BbH8nRn++fjiy5o=; b=QzJ+SsjVaaMVTC8Ye6gnmRPaJtAeZ4p5SBaTIDRZvstbqiK+JovKXqbSm26iFKrKmJ KY9lgkCUc7uYO3DhzF6ycHyaS4vpMuxx/NgfZDWYRqlYSXhmgo0RJ120oq0fPSystzOG r2UlVhNhrraYkBdsH2MrzlI7uBHj3trP0TmYj14TpMoOKQ0SVi2q7HMAcsfgkJ4uFhFf a+OTpKjtg2/R5wBfbLUm2idLvgp1a2aYdj+II/skZ2YY6I0MenYtW7tdhbyDen60ezxO R1ZcuNUl6uUMXl7xccJFt31RNAL1q7k/nbmB6mOuLXyuhFnf0Zt0kGVDD7PVI8m37QP6 hFag== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-pm-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h91si5234661pld.610.2017.08.25.07.32.36; Fri, 25 Aug 2017 07:32:37 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-pm-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756689AbdHYOcd (ORCPT + 12 others); Fri, 25 Aug 2017 10:32:33 -0400 Received: from foss.arm.com ([217.140.101.70]:54038 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754632AbdHYOcc (ORCPT ); Fri, 25 Aug 2017 10:32:32 -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 B6080165D; Fri, 25 Aug 2017 07:32:31 -0700 (PDT) Received: from e107985-lin.cambridge.arm.com (e107985-lin.cambridge.arm.com [10.1.210.41]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C40583F540; Fri, 25 Aug 2017 07:32:29 -0700 (PDT) From: Dietmar Eggemann To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, linux@arm.linux.org.uk, Greg Kroah-Hartman , Juri Lelli , Vincent Guittot , Peter Zijlstra , Morten Rasmussen , Viresh Kumar , "Rafael J . Wysocki" , Sudeep Holla Subject: [PATCH v4 02/10] cpufreq: provide default frequency-invariance setter function Date: Fri, 25 Aug 2017 15:31:58 +0100 Message-Id: <20170825143206.30467-3-dietmar.eggemann@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170825143206.30467-1-dietmar.eggemann@arm.com> References: <20170825143206.30467-1-dietmar.eggemann@arm.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Frequency-invariant accounting support based on the ratio of current frequency and maximum supported frequency is an optional feature an arch can implement. Since there are cpufreq drivers (e.g. cpufreq-dt) which can be build for different arch's a default implementation of the frequency-invariance setter function arch_set_freq_scale() is needed. This default implementation is an empty weak function which will be overwritten by a strong function in case the arch provides one. The setter function passes the cpumask of related (to the frequency change) cpus (online and offline cpus), the (new) current frequency and the maximum supported frequency. Cc: Rafael J. Wysocki Cc: Viresh Kumar Signed-off-by: Dietmar Eggemann --- drivers/cpufreq/cpufreq.c | 6 ++++++ include/linux/cpufreq.h | 3 +++ 2 files changed, 9 insertions(+) -- 2.11.0 Acked-by: Rafael J. Wysocki Acked-by: Viresh Kumar diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 9bf97a366029..ced8d539d0d5 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -161,6 +161,12 @@ u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy) } EXPORT_SYMBOL_GPL(get_cpu_idle_time); +__weak void arch_set_freq_scale(struct cpumask *cpus, unsigned long cur_freq, + unsigned long max_freq) +{ +} +EXPORT_SYMBOL_GPL(arch_set_freq_scale); + /* * This is a generic cpufreq init() routine which can be used by cpufreq * drivers of SMP systems. It will do following: diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index f10a9b3761cd..e38acc1a4d47 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -899,6 +899,9 @@ static inline bool policy_has_boost_freq(struct cpufreq_policy *policy) extern unsigned int arch_freq_get_on_cpu(int cpu); +extern void arch_set_freq_scale(struct cpumask *cpus, unsigned long cur_freq, + unsigned long max_freq); + /* the following are really really optional */ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; extern struct freq_attr cpufreq_freq_attr_scaling_boost_freqs; From patchwork Fri Aug 25 14:32:04 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dietmar Eggemann X-Patchwork-Id: 111022 Delivered-To: patch@linaro.org Received: by 10.37.128.210 with SMTP id c18csp1045611ybm; Fri, 25 Aug 2017 07:32:48 -0700 (PDT) X-Received: by 10.84.241.131 with SMTP id b3mr11095648pll.347.1503671568040; Fri, 25 Aug 2017 07:32:48 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1503671568; cv=none; d=google.com; s=arc-20160816; b=wBjs78DgflUKKWX5l2JZxKFuzamlNYZ8vXT67nw2m4ZaOP+W3pgurS8N6LKJxskP3C LPoUTMewcp1IuenD80RV6yXMvXKfsX2X8aLsjbyERZsJIugrtNtYyMZGvx22VWL2HpqY 8De5fq8tWQ/LpEOc0PpjP80ilnm9cw24L6XY+uBr61JeFXHqLGlMyEqbnkmQNddSOtOw GKXk+O8mClvJq0kubJy/HuxND62nZkVusfycibPHeEcCWWNo4KIHOkxOmc8aE/TXcmKr y9Ap93KMNbaf7gY1ojfrjbi49OxkNRw7Yz91vTsk+JNb6wNJbyGMzoWv+tIAKYiS9E0i Wn7g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=nCr9J90upXbee+JCUv5Zmvv+OWBcT6kUmo/KmHuOaiw=; b=jLI9Ddaxxq5DldBEt9FEYl9tYhrqspA5VJRUfd82yhK+NYNtM4PLOdDd+Qn3hhPPJV Fdfrt8LL1e15u4f3G5klr2jbCb9tJY0yf7Bzdqq9lHR+rsnqlYOL3+o+rJ9d3h4qoR/s 1eO1hei37g/2Ljd3HvnyDagkXN1JfZ1XsFO55J5ft7ZhUw8gFJhPV2G2D4xipblCJ+7s Yo/+peGsaJ5WcGrnKsYhtdvTSfPrdfeMjr0jZYcZSkiQBF9bVI4rQR3avl17iw7YEfrG Zf86G2MRvdWGCL/Ge/03mbZt9asaCQEeWcmAsZxy+dFg/ssYrJ2MrR5yecn4RAEi8LSS rIMw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-pm-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id a1si5061466pln.371.2017.08.25.07.32.47; Fri, 25 Aug 2017 07:32:48 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-pm-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932866AbdHYOcq (ORCPT + 12 others); Fri, 25 Aug 2017 10:32:46 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:54124 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932735AbdHYOcp (ORCPT ); Fri, 25 Aug 2017 10:32:45 -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 DCD5D1AFA; Fri, 25 Aug 2017 07:32:44 -0700 (PDT) Received: from e107985-lin.cambridge.arm.com (e107985-lin.cambridge.arm.com [10.1.210.41]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id EAF543F540; Fri, 25 Aug 2017 07:32:42 -0700 (PDT) From: Dietmar Eggemann To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, linux@arm.linux.org.uk, Greg Kroah-Hartman , Juri Lelli , Vincent Guittot , Peter Zijlstra , Morten Rasmussen , Viresh Kumar , "Rafael J . Wysocki" , Sudeep Holla Subject: [PATCH v4 08/10] arm: wire cpu-invariant accounting support up to the task scheduler Date: Fri, 25 Aug 2017 15:32:04 +0100 Message-Id: <20170825143206.30467-9-dietmar.eggemann@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170825143206.30467-1-dietmar.eggemann@arm.com> References: <20170825143206.30467-1-dietmar.eggemann@arm.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Commit 8cd5601c5060 ("sched/fair: Convert arch_scale_cpu_capacity() from weak function to #define") changed the wiring which now has to be done by associating arch_scale_cpu_capacity with the actual implementation provided by the architecture. Define arch_scale_cpu_capacity to use the arch_topology "driver" function topology_get_cpu_scale() for the task scheduler's cpu-invariant accounting instead of the default arch_scale_cpu_capacity() in kernel/sched/sched.h. Cc: Russell King Cc: Juri Lelli Signed-off-by: Dietmar Eggemann Acked-by: Vincent Guittot Acked-by: Russell King Tested-by: Juri Lelli Reviewed-by: Juri Lelli --- arch/arm/include/asm/topology.h | 3 +++ 1 file changed, 3 insertions(+) -- 2.11.0 diff --git a/arch/arm/include/asm/topology.h b/arch/arm/include/asm/topology.h index a56a9e24f4c0..b713e7223bc4 100644 --- a/arch/arm/include/asm/topology.h +++ b/arch/arm/include/asm/topology.h @@ -29,6 +29,9 @@ const struct cpumask *cpu_coregroup_mask(int cpu); /* Replace task scheduler's default frequency-invariant accounting */ #define arch_scale_freq_capacity topology_get_freq_scale +/* Replace task scheduler's default cpu-invariant accounting */ +#define arch_scale_cpu_capacity topology_get_cpu_scale + #else static inline void init_cpu_topology(void) { }