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=-4.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=no 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 98DAEC433E1 for ; Fri, 26 Jun 2020 03:51:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 76B6720775 for ; Fri, 26 Jun 2020 03:51:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="FrOalOYS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726402AbgFZDvv (ORCPT ); Thu, 25 Jun 2020 23:51:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58064 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726421AbgFZDvu (ORCPT ); Thu, 25 Jun 2020 23:51:50 -0400 Received: from mail-pj1-x1042.google.com (mail-pj1-x1042.google.com [IPv6:2607:f8b0:4864:20::1042]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F664C08C5DC for ; Thu, 25 Jun 2020 20:51:50 -0700 (PDT) Received: by mail-pj1-x1042.google.com with SMTP id u8so4133946pje.4 for ; Thu, 25 Jun 2020 20:51:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=7bN1uZrTrlYe7+hbOLOxin5wT6ZnXt4+ox32w8sL7Hc=; b=FrOalOYSHarf0XoChv3NrRBqbQ9p5VWA6f832QKG0SInAh154BXvlKEgwC7obvI2vX 7kX+40HAcARrqUPtcQWUBdObgGt0OWnCUZyqIIZUJ6DWbTcyfQ/DfPU4U/E1uTJmdREy wFbf8x9TOckfDIqN3oUmguJLxibXTcl4NAtqH5l9OslDU4ff/kK7wJkVtbOjda30fKI9 oG6K7yY8/3KtSfDsa/Vu85lYcBAvZsBxSW75ooXamgKyFsYPsFKhgEU7eKpU7V8WlHsT 36wgUHu0VhqQccdu9tD396DLlUYUvtfvzYfQgA3NRgxQw1hJ4f2aguN7PLlX42dZrUGG ripA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=7bN1uZrTrlYe7+hbOLOxin5wT6ZnXt4+ox32w8sL7Hc=; b=prOt7UA8l2dSGynYB9fwOvlR1e7nFMhOiAK6dUVFnSQX497lvDqnJHXUtGR7kEk01N xeW+0lHFwyEpT6ycNapeN3Sd3VfUmiTVrYeWMndvmr1U+G9TU7Q8MlgGVvt6ttIOgvfh HJFKHilYicL1bXgbqXOtK+I5/Dsp5Ysir3G0/PFWHRXxByRDfx0AT04UR/EgLP4FOkcJ CZWmCpRBg1otqxbkWV1L5o9YCuqH3UJ9ai+4GLS1HavYsGkUvLxEo0ag0HWq8Wi+Nu/1 JqBnnnUcyUAx3kunqo8GGhV4KyJUa2FZPMqUFkRwijK7Ci8/JxcPRxtqzIhhYxdHiVcI mU7w== X-Gm-Message-State: AOAM531+9PmcP9w9d/h0VDRwCDoyAF5vf0Ti0SkK8FfLKGpyCI9ccJy7 zZJ32Xp4mrxqnhuXcz9VGYOjYw== X-Google-Smtp-Source: ABdhPJxMTAmTM5qxQmboEyQh780zfG4EvDvMqOf9pXytg/TYG0YYGsrLP0EM+wrQTSlA3WSMtfjUnQ== X-Received: by 2002:a17:902:b78a:: with SMTP id e10mr985267pls.194.1593143509854; Thu, 25 Jun 2020 20:51:49 -0700 (PDT) Received: from localhost ([122.172.127.76]) by smtp.gmail.com with ESMTPSA id iq19sm9466929pjb.48.2020.06.25.20.51.48 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 25 Jun 2020 20:51:49 -0700 (PDT) From: Viresh Kumar To: Rafael Wysocki , Arnd Bergmann , Ben Segall , Dietmar Eggemann , Ingo Molnar , Jonathan Corbet , Juri Lelli , Mel Gorman , Peter Zijlstra , Steven Rostedt , Vincent Guittot , Viresh Kumar Cc: linux-pm@vger.kernel.org, kernel-team@android.com, tkjos@google.com, adharmap@codeaurora.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Quentin Perret Subject: [PATCH v3 0/3] cpufreq: Allow default governor on cmdline and fix locking issues Date: Fri, 26 Jun 2020 09:21:41 +0530 Message-Id: X-Mailer: git-send-email 2.25.0.rc1.19.g042ed3e048af MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Hi, I have picked Quentin's series over my patch, modified both and tested. V2->V3: - default_governor is a string now and we don't set it on governor registration or unregistration anymore. - Fixed locking issues in cpufreq_init_policy(). -- Viresh Original cover letter fro Quentin: This series enables users of prebuilt kernels (e.g. distro kernels) to specify their CPUfreq governor of choice using the kernel command line, instead of having to wait for the system to fully boot to userspace to switch using the sysfs interface. This is helpful for 2 reasons: 1. users get to choose the governor that runs during the actual boot; 2. it simplifies the userspace boot procedure a bit (one less thing to worry about). To enable this, the first patch moves all governor init calls to core_initcall, to make sure they are registered by the time the drivers probe. This should be relatively low impact as registering a governor is a simple procedure (it gets added to a llist), and all governors already load at core_initcall anyway when they're set as the default in Kconfig. This also allows to clean-up the governors' init/exit code, and reduces boilerplate. The second patch introduces the new command line parameter, inspired by its cpuidle counterpart. More details can be found in the respective patch headers. Changes in v2: - added Viresh's ack to patch 01 - moved the assignment of 'default_governor' in patch 02 to the governor registration path instead of the driver registration (Viresh) Quentin Perret (2): cpufreq: Register governors at core_initcall cpufreq: Specify default governor on command line Viresh Kumar (1): cpufreq: Fix locking issues with governors .../admin-guide/kernel-parameters.txt | 5 + Documentation/admin-guide/pm/cpufreq.rst | 6 +- .../platforms/cell/cpufreq_spudemand.c | 26 +----- drivers/cpufreq/cpufreq.c | 93 ++++++++++++------- drivers/cpufreq/cpufreq_conservative.c | 22 +---- drivers/cpufreq/cpufreq_ondemand.c | 24 ++--- drivers/cpufreq/cpufreq_performance.c | 14 +-- drivers/cpufreq/cpufreq_powersave.c | 18 +--- drivers/cpufreq/cpufreq_userspace.c | 18 +--- include/linux/cpufreq.h | 14 +++ kernel/sched/cpufreq_schedutil.c | 6 +- 11 files changed, 106 insertions(+), 140 deletions(-) -- 2.25.0.rc1.19.g042ed3e048af