From: Dirk Brandewie Date: Fri, 20 Jun 2014 14:28:00 +0000 (-0700) Subject: intel_pstate: Update documentation of {max,min}_perf_pct sysfs files X-Git-Tag: firefly_0821_release~176^2~3642^2^2~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=41629a8233470325bfbb60377f555f9e8acc879f;p=firefly-linux-kernel-4.4.55.git 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+ # 3.13+ Signed-off-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- diff --git a/Documentation/cpu-freq/intel-pstate.txt b/Documentation/cpu-freq/intel-pstate.txt index e742d21dbd96..a69ffe1d54d5 100644 --- a/Documentation/cpu-freq/intel-pstate.txt +++ b/Documentation/cpu-freq/intel-pstate.txt @@ -15,10 +15,13 @@ New sysfs files for controlling P state selection have been added to /sys/devices/system/cpu/intel_pstate/ 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 - 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 frequency range.