From: Perry Yuan <perry.yuan@amd.com>
To: <rafael.j.wysocki@intel.com>, <Mario.Limonciello@amd.com>,
<viresh.kumar@linaro.org>, <Ray.Huang@amd.com>,
<gautham.shenoy@amd.com>, <Borislav.Petkov@amd.com>
Cc: <Alexander.Deucher@amd.com>, <Xinmei.Huang@amd.com>,
<Xiaojian.Du@amd.com>, <Li.Meng@amd.com>,
<linux-pm@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v2 0/6] AMD Pstate Driver Core Performance Boost
Date: Sun, 4 Feb 2024 20:12:51 +0800 [thread overview]
Message-ID: <cover.1707047943.git.perry.yuan@amd.com> (raw)
The patchset series add core performance boost feature for AMD pstate
driver including passisve ,guide and active mode support.
User can change core frequency boost control with a new sysfs entry:
"/sys/devices/system/cpu/amd_pstate/cpb_boost"
The legancy boost interface has been removed due to the function
conflict with new cpb_boost which can support all modes.
1). enable core boost:
$ sudo bash -c "echo 0 > /sys/devices/system/cpu/amd_pstate/cpb_boost"
$ lscpu -ae
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ
0 0 0 0 0:0:0:0 yes 4201.0000 400.0000 2983.578
1 0 0 1 1:1:1:0 yes 4201.0000 400.0000 2983.578
2 0 0 2 2:2:2:0 yes 4201.0000 400.0000 2583.855
3 0 0 3 3:3:3:0 yes 4201.0000 400.0000 2983.578
4 0 0 4 4:4:4:0 yes 4201.0000 400.0000 2983.578
2). disabble core boost:
$ sudo bash -c "echo 1 > /sys/devices/system/cpu/amd_pstate/cpb_boost"
$ lscpu -ae
0 0 0 0 0:0:0:0 yes 5759.0000 400.0000 2983.578
1 0 0 1 1:1:1:0 yes 5759.0000 400.0000 2983.578
2 0 0 2 2:2:2:0 yes 5759.0000 400.0000 2983.578
3 0 0 3 3:3:3:0 yes 5759.0000 400.0000 2983.578
4 0 0 4 4:4:4:0 yes 5759.0000 400.0000 2983.578
The patches have been tested with the AMD 7950X processor and many users
would like to get core boost control enabled for power saving.
Changes from v1:
* drop suspend/resume fix patch 6/7 because of the fix should be in
another fix series instead of CPB feature
* move the set_boost remove patch to the last(Mario)
* Fix commit info with "Closes:" (Mario)
* simplified global.cpb_supported initialization(Mario)
* Add guide mode support for CPB control
* Fixed some Doc typos and add guide mode info to Doc as well.
v1: https://lore.kernel.org/all/cover.1706255676.git.perry.yuan@amd.com/
Perry Yuan (6):
cpufreq: amd-pstate: initialize new core precision boost state
cpufreq: amd-pstate: implement cpb_boost sysfs entry for boost control
cpufreq: amd-pstate: fix max_perf calculation for amd_get_max_freq()
cpufreq: amd-pstate: fix the MSR highest perf will be reset issue
while cpb boost off
Documentation: cpufreq: amd-pstate: introduce the new cpu boost
control method
cpufreq: amd-pstate: remove legacy set_boost callback for passive mode
Documentation/admin-guide/pm/amd-pstate.rst | 11 ++
drivers/cpufreq/amd-pstate.c | 168 ++++++++++++++++----
include/linux/amd-pstate.h | 1 -
3 files changed, 145 insertions(+), 35 deletions(-)
--
2.34.1
next reply other threads:[~2024-02-04 12:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-04 12:12 Perry Yuan [this message]
2024-02-04 12:12 ` [PATCH v2 1/6] cpufreq: amd-pstate: initialize new core precision boost state Perry Yuan
2024-02-04 12:12 ` [PATCH v2 2/6] cpufreq: amd-pstate: implement cpb_boost sysfs entry for boost control Perry Yuan
2024-02-04 12:12 ` [PATCH v2 3/6] cpufreq: amd-pstate: fix max_perf calculation for amd_get_max_freq() Perry Yuan
2024-02-04 12:12 ` [PATCH v2 4/6] cpufreq: amd-pstate: fix the MSR highest perf will be reset issue while cpb boost off Perry Yuan
2024-02-04 12:12 ` [PATCH v2 5/6] Documentation: cpufreq: amd-pstate: introduce the new cpu boost control method Perry Yuan
2024-02-04 12:12 ` [PATCH v2 6/6] cpufreq: amd-pstate: remove legacy set_boost callback for passive mode Perry Yuan
2024-02-04 14:57 ` Oleksandr Natalenko
2024-02-05 16:28 ` Mario Limonciello
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