From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752646Ab3ITQBe (ORCPT ); Fri, 20 Sep 2013 12:01:34 -0400 Received: from mailout3.samsung.com ([203.254.224.33]:45208 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752044Ab3ITQBc (ORCPT ); Fri, 20 Sep 2013 12:01:32 -0400 X-AuditID: cbfee61b-b7f776d0000016c8-88-523c715a6ebc 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 , Daniel Lezcano , Myungjoo Ham , durgadoss.r@intel.com Subject: [PATCH RESEND v8 0/7] cpufreq:boost: CPU Boost mode support Date: Fri, 20 Sep 2013 18:00:57 +0200 Message-id: <1379692864-4954-1-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+NgFtrHLMWRmVeSWpSXmKPExsVy+t9jAd2oQpsgg8YvmhYbZ6xntXja9IPd Yt5nWYu+n1eYLdbs/8lk0Xn2CbPFm0fcFm8ebma0uLxrDpvF594jjBa3G1ewWfQv7GWyePKw j81i41cPBz6PxXteMnncubaHzWPdtLfMHn1bVjF6PFrcwuhx/MZ2Jo/Pm+QC2KO4bFJSczLL Uov07RK4Mk5dP8JesFCyovHderYGxm/CXYycHBICJhJbV31ih7DFJC7cW8/WxcjFISSwiFFi zf7/zBBOF5PEhOkfmECq2AT0JD7ffQpmiwjMYZS4c9QdxGYW2MUscemSLogtLOAicX/zbLCp LAKqEif+3mMDsXkFXCWuTpzIArFNXuLp/T6wOKeAm8TcTy/AbCGgmpsfVrJMYORdwMiwilE0 tSC5oDgpPddIrzgxt7g0L10vOT93EyM4VJ9J72Bc1WBxiFGAg1GJh/dBiE2QEGtiWXFl7iFG CQ5mJRHe2gKgEG9KYmVValF+fFFpTmrxIUZpDhYlcd6DrdaBQgLpiSWp2ampBalFMFkmDk6p BsYu53+vN68Jb1SzXr362Ps/39esmftX5OOXwru/yoP7/kq/dA/67a5/4qX1xbU7lxy8L3wt OF7mw9n56Zf/VtzfoXFuP/OMgJ3fni6b2qhz0rmj1Xru4ZoubrNO1yU/ogp9/eM7T6o+F7G5 tORO0I6doe3HPa4UHVDTYW1dJspxQefoC42UmISnSizFGYmGWsxFxYkAb5Z6j1ECAAA= 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. Then it starts monitoring target temperature to evaluate if boost can be enabled again. This emulates behaviour similar to HW managed boost (like x86) Tested at HW: Exynos 4412 (TRATS2) 3.12-rc1 Linux Intel Core i7-3770 3.12-rc1 Linux Above patches were posted on top of linux_pm/linux-next SHA1: cf8bc6460f2137412081ba26d18932f20cb856fd 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 thermal:boost: Automatic enable/disable of BOOST feature 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 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 | 6 ++ drivers/cpufreq/exynos4x12-cpufreq.c | 2 +- drivers/cpufreq/freq_table.c | 53 +++++++++++++-- drivers/thermal/thermal_core.c | 55 ++++++++++++++++ include/linux/cpufreq.h | 25 +++++++ include/linux/thermal.h | 2 + 11 files changed, 313 insertions(+), 79 deletions(-) -- 1.7.10.4