[PATCH v3 0/3] cpufreq:boost: CPU Boost mode support

Lukasz Majewski
2013-06-14T07:38:57Z

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 and disabled by default
The cpufreq_driver is responsibile for providing set_boost_freq callback
(if needed)

- struct cpufreq_driver has been extended with boost related fields:
-- boost_supported - when driver supports boosting
-- set_boost_freq - callback to function, which is necessary to
enable boost at the processor (like it is done at Intel)

- Boost sysfs attributies are seen only when cpufreq driver supports them.
They will not show up until either cpufreq_driver defines boost_supported
flag or device tree's cpufreq "boost_mode" attribute.

- No special spin_lock for Boost was created. The one from cpufreq_driver
was reused.

- The Boost code doesn't rely on any policy. When boost state is changed,
then policies attached to each CPU are updated.

Tested at: HW:
Exynos 4412 3.10 linux
Exynos 4210 3.10 linux
Compile tested x86_64 defconfig (acpi) - help with HW (Intel Nehalem) test
needed

Lukasz Majewski (3):
cpufreq: Add boost frequency support in core
cpufreq:acpi:x86: Adjust the acpi-cpufreq.c code to work with common
boost solution
cpufreq:exynos:Extend Exynos cpufreq driver to support boost
framework

arch/arm/mach-s3c24xx/cpufreq.c | 2 +-
arch/powerpc/platforms/pasemi/cpufreq.c | 2 +-
arch/powerpc/platforms/powermac/cpufreq_32.c | 2 +-
arch/powerpc/platforms/powermac/cpufreq_64.c | 2 +-
drivers/cpufreq/acpi-cpufreq.c | 62 +++++++-----------
drivers/cpufreq/arm_big_little.c | 3 +-
drivers/cpufreq/blackfin-cpufreq.c | 2 +-
drivers/cpufreq/cpufreq-cpu0.c | 2 +-
drivers/cpufreq/cpufreq.c | 87 ++++++++++++++++++++++++++
drivers/cpufreq/cris-artpec3-cpufreq.c | 2 +-
drivers/cpufreq/cris-etraxfs-cpufreq.c | 2 +-
drivers/cpufreq/davinci-cpufreq.c | 2 +-
drivers/cpufreq/dbx500-cpufreq.c | 2 +-
drivers/cpufreq/e_powersaver.c | 3 +-
drivers/cpufreq/elanfreq.c | 2 +-
drivers/cpufreq/exynos-cpufreq.c | 7 ++-
drivers/cpufreq/exynos5440-cpufreq.c | 2 +-
drivers/cpufreq/freq_table.c | 44 ++++++++++---
drivers/cpufreq/ia64-acpi-cpufreq.c | 2 +-
drivers/cpufreq/imx6q-cpufreq.c | 2 +-
drivers/cpufreq/kirkwood-cpufreq.c | 3 +-
drivers/cpufreq/longhaul.c | 2 +-
drivers/cpufreq/loongson2_cpufreq.c | 2 +-
drivers/cpufreq/maple-cpufreq.c | 2 +-
drivers/cpufreq/omap-cpufreq.c | 2 +-
drivers/cpufreq/p4-clockmod.c | 2 +-
drivers/cpufreq/powernow-k6.c | 2 +-
drivers/cpufreq/powernow-k7.c | 2 +-
drivers/cpufreq/powernow-k8.c | 2 +-
drivers/cpufreq/ppc_cbe_cpufreq.c | 2 +-
drivers/cpufreq/pxa2xx-cpufreq.c | 4 +-
drivers/cpufreq/pxa3xx-cpufreq.c | 2 +-
drivers/cpufreq/s3c2416-cpufreq.c | 2 +-
drivers/cpufreq/s3c64xx-cpufreq.c | 2 +-
drivers/cpufreq/s5pv210-cpufreq.c | 2 +-
drivers/cpufreq/sc520_freq.c | 2 +-
drivers/cpufreq/sh-cpufreq.c | 2 +-
drivers/cpufreq/sparc-us2e-cpufreq.c | 2 +-
drivers/cpufreq/sparc-us3-cpufreq.c | 2 +-
drivers/cpufreq/spear-cpufreq.c | 3 +-
drivers/cpufreq/speedstep-centrino.c | 2 +-
drivers/cpufreq/speedstep-ich.c | 2 +-
drivers/cpufreq/speedstep-smi.c | 2 +-
drivers/cpufreq/tegra-cpufreq.c | 4 +-
include/linux/cpufreq.h | 18 +++++-
45 files changed, 211 insertions(+), 95 deletions(-)

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1.7.10.4