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| author | Dirk Brandewie <dirk.j.brandewie@intel.com> | 2014-06-20 07:28:00 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-07-07 01:22:19 +0200 |
| commit | 41629a8233470325bfbb60377f555f9e8acc879f (patch) | |
| tree | 0c5ebc91cf4ea05fdfc935314d28e89e0805b48e /Documentation/cpu-freq | |
| parent | dd5fbf70f96dbfd7ee432096a1f979b2b3267856 (diff) | |
| download | lwn-41629a8233470325bfbb60377f555f9e8acc879f.tar.gz lwn-41629a8233470325bfbb60377f555f9e8acc879f.zip | |
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>
Diffstat (limited to 'Documentation/cpu-freq')
| -rw-r--r-- | Documentation/cpu-freq/intel-pstate.txt | 7 |
1 files changed, 5 insertions, 2 deletions
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. |