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Documentation: add ABI entry for intel_pstate

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Add a Documentation/ABI entry for
/sys/devices/system/cpu/intel_pstate/max_perf_pct,
/sys/devices/system/cpu/intel_pstate/min_perf_pct, and
/sys/devices/system/cpu/intel_pstate/no_turbo.

Cc: Dirk Brandewie <dirk.brandewie@gmail.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Ramkumar Ramachandra 2014-01-06 18:24:26 +05:30 • committed by Rafael J. Wysocki
parent d568b6f71d
commit fbe299e0c8
1 changed files with 24 additions and 0 deletions
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24
Documentation/ABI/testing/sysfs-devices-system-cpu
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@ -200,3 +200,27 @@ Description: address and size of the percpu note.
note of cpu#. note of cpu#.
crash_notes_size: size of the note of cpu#. crash_notes_size: size of the note of cpu#.
What: /sys/devices/system/cpu/intel_pstate/max_perf_pct
/sys/devices/system/cpu/intel_pstate/min_perf_pct
/sys/devices/system/cpu/intel_pstate/no_turbo
Date: February 2013
Contact: linux-pm@vger.kernel.org
Description: Parameters for the Intel P-state driver
Logic for selecting the current P-state in Intel
Sandybridge+ processors. The three knobs control
limits for the P-state that will be requested by the
driver.
max_perf_pct: limits the maximum P state that will be requested by
the driver stated as a percentage of the available performance.
min_perf_pct: limits the minimum P state that will be requested by
the driver stated as a percentage of the available performance.
no_turbo: limits the driver to selecting P states below the turbo
frequency range.
More details can be found in Documentation/cpu-freq/intel-pstate.txt