From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755217Ab3KER1O (ORCPT ); Tue, 5 Nov 2013 12:27:14 -0500 Received: from mailout1.samsung.com ([203.254.224.24]:59957 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750732Ab3KER1L (ORCPT ); Tue, 5 Nov 2013 12:27:11 -0500 X-AuditID: cbfee61b-b7fd56d000001fc6-85-52792a6e240e From: Lukasz Majewski To: Viresh Kumar , "Rafael J. Wysocki" , Zhang Rui , Eduardo Valentin Cc: "cpufreq@vger.kernel.org" , Linux PM list , Jonghwa Lee , Lukasz Majewski , Lukasz Majewski , linux-kernel , Bartlomiej Zolnierkiewicz , Myungjoo Ham , durgadoss.r@intel.com, Amit Daniel Kachhap Subject: [PATCH v10 0/7] cpufreq:boost: CPU Boost mode support Date: Tue, 05 Nov 2013 18:26:44 +0100 Message-id: <1383672411-26324-1-git-send-email-l.majewski@samsung.com> X-Mailer: git-send-email 1.7.10 In-reply-to: <1370502472-7249-1-git-send-email-l.majewski@samsung.com> References: <1370502472-7249-1-git-send-email-l.majewski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrALMWRmVeSWpSXmKPExsVy+t9jQd08rcogg70dshYNV0MsNs5Yz2rx tOkHu0XfzyvMFmv2/2Sy6Dz7hNnizSNuizcPNzNaXN41h83ic+8RRovbjSvYLM6cvsRq8eRh H5vFxq8eDnwei/e8ZPK4c20Pm8e6aW+ZPbZcbWfx6NuyitHj+I3tTB6fN8kFsEdx2aSk5mSW pRbp2yVwZdz4soixoFWy4tasPtYGxuPCXYycHBICJhJvV6xmhrDFJC7cW8/WxcjFISQwnVFi /6NDrBBOF5PEygn3WECq2AT0JD7ffcoEkhARWMIo8bppAVgVs8BeZolJf9ayglQJC9hJ7Dtw GMxmEVCVWHt9PiOIzSvgJvGn+x8bxD55iaf3+8BsTqD43E8vwGwhAVeJmx9Wskxg5F3AyLCK UTS1ILmgOCk910ivODG3uDQvXS85P3cTIzhcn0nvYFzVYHGIUYCDUYmHN0G+MkiINbGsuDL3 EKMEB7OSCO+x/xVBQrwpiZVVqUX58UWlOanFhxilOViUxHkPtloHCgmkJ5akZqemFqQWwWSZ ODilGhiX+xTdlVjwNcBrU6DQAbWehToiwqEXZmkwvHp2xteA4/WnDNPaGY2vWP8qxXQ66xoa xB38upPtlMTRn9v4dn5MN89zncbTu2VvslXN5sl5Ecm8E26IsLxjSPF7dn9x08p3dlWXb0mX xFy33HjooXm1/zHXCYW/z1bGTo6Q17968f7cW1fnvDRXYinOSDTUYi4qTgQAMe/MylMCAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series introduces support for CPU overclocking technique called Boost. It is a follow up of a LAB governor proposal. Boost is a LAB component: http://thread.gmane.org/gmane.linux.kernel/1484746/match=cpufreq Boost unifies hardware based solution (e.g. Intel Nehalem) with software oriented one (like the one done at Exynos). For this reason cpufreq/freq_table code has been reorganized to include common code. Important design decisions: - Boost related code is compiled-in unconditionally to cpufreq core and disabled by default. The cpufreq_driver is responsibile for setting boost_supported flag and providing set_boost callback(if HW support is needed). For software managed boost, special Kconfig flag - CONFIG_CPU_FREQ_BOOST_SW has been defined. It will be selected only when a target platform has thermal framework properly configured. - struct cpufreq_driver has been extended with boost related fields: -- boost_supported - when driver supports boosting -- boost_enabled - boost state -- set_boost - callback to function, which is necessary to enable/disable boost - Boost sysfs attribute (/sys/devices/system/cpu/cpufreq/boost) is visible _only_ when cpufreq driver supports Boost. - No special spin_lock for Boost was created. The one from cpufreq core was reused. - The Boost code doesn't rely on any policy. When boost state is changed, then the policy list is iterated and proper adjustements are done. - To improve safety level, the thermal framework is also extended to disable software boosting, when thermal trip point is reached. After cooling down the boost can be enabled again. This emulates behaviour similar to HW managed boost (like x86) Tested at HW: Exynos 4412 3.12-rc7 Linux Intel Core i7-3770 3.12-rc7 Linux Above patches were posted on top of kernel_pm/bleeding-edge (SHA1: acc3663ce3f9cde3a7da88fb478531c58d5ed399) Lukasz Majewski (7): cpufreq: Add boost frequency support in core cpufreq:acpi:x86: Adjust the acpi-cpufreq.c code to work with common boost solution cpufreq:boost:Kconfig: Provide support for software managed BOOST cpufreq:exynos:Extend Exynos cpufreq driver to support boost framework Documentation:cpufreq:boost: Update BOOST documentation cpufreq:exynos4x12: Change L0 driver data to CPUFREQ_BOOST_FREQ thermal:exynos:boost: Automatic enable/disable of BOOST feature (at Exynos4412) Documentation/cpu-freq/boost.txt | 26 +++---- drivers/cpufreq/Kconfig | 4 + drivers/cpufreq/Kconfig.arm | 15 ++++ drivers/cpufreq/acpi-cpufreq.c | 86 +++++++-------------- drivers/cpufreq/cpufreq.c | 118 ++++++++++++++++++++++++++++- drivers/cpufreq/exynos-cpufreq.c | 3 + drivers/cpufreq/exynos4x12-cpufreq.c | 2 +- drivers/cpufreq/freq_table.c | 56 ++++++++++++-- drivers/thermal/samsung/exynos_tmu_data.c | 47 ++++++++++++ include/linux/cpufreq.h | 24 ++++++ 10 files changed, 302 insertions(+), 79 deletions(-) -- 1.7.10.4