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From: dirk.brandewie@gmail.com
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To: linux-pm@vger.kernel.org
Cc: rjw@rjwysocki.net, dirk.brandewie@gmail.com,
stable@vger.kernel.org, Dirk Brandewie <dirk.j.brandewie@intel.com>
Subject: [PATCH 3/3] intel_pstate: Update documentation of {max,min}_perf_pct sysfs files
Date: Fri, 20 Jun 2014 07:28:00 -0700
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From: Dirk Brandewie <dirk.j.brandewie@intel.com>
Update documentation to make the interpretation of the values clearer
References: https://bugzilla.kernel.org/show_bug.cgi?id=64251
Cc: Stable <stable@vger.kernel.org> [3.13+]
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
---
Documentation/cpu-freq/intel-pstate.txt | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/Documentation/cpu-freq/intel-pstate.txt b/Documentation/cpu-freq/intel-pstate.txt
index e742d21..a69ffe1 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.
--
1.9.0
--
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