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intel_pstate: Update documentation of {max,min}_perf_pct sysfs files 

Update documentation to make the interpretation of the values clearer

Link: https://bugzilla.kernel.org/show_bug.cgi?id=64251
Cc: 3.13+ <stable@vger.kernel.org>  # 3.13+
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Dirk Brandewie 2014-06-20 07:28:00 -07:00 committed by Rafael J. Wysocki
parent dd5fbf70f9
commit 41629a8233
1 changed files with 5 additions and 2 deletions
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7
Documentation/cpu-freq/intel-pstate.txt
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@ -15,10 +15,13 @@ New sysfs files for controlling P state selection have been added to
/sys/devices/system/cpu/intel_pstate/ /sys/devices/system/cpu/intel_pstate/
max_perf_pct: limits the maximum P state that will be requested by max_perf_pct: limits the maximum P state that will be requested by
the driver stated as a percentage of the available performance. the driver stated as a percentage of the available performance. The
available (P states) performance may be reduced by the no_turbo
setting described below.
min_perf_pct: limits the minimum P state that will be requested by min_perf_pct: limits the minimum P state that will be requested by
the driver stated as a percentage of the available performance. the driver stated as a percentage of the max (non-turbo)
performance level.
no_turbo: limits the driver to selecting P states below the turbo no_turbo: limits the driver to selecting P states below the turbo
frequency range. frequency range.