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Commit fbe299e0 authored by Ramkumar Ramachandra's avatar Ramkumar Ramachandra Committed by Rafael J. Wysocki
Browse files

Documentation: add ABI entry for intel_pstate 



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: default avatarRamkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent d568b6f7

Documentation/ABI/testing/sysfs-devices-system-cpu

+24 −0
Original line number Diff line number Diff line
@@ -200,3 +200,27 @@ Description: address and size of the percpu note. 
		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