98 lines
5.1 KiB
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98 lines
5.1 KiB
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From: dirk.brandewie@gmail.com
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To: linux-pm@vger.kernel.org
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Cc: rjw@rjwysocki.net, dirk.brandewie@gmail.com,
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stable@vger.kernel.org, Dirk Brandewie <dirk.j.brandewie@intel.com>
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Subject: [PATCH 3/3] intel_pstate: Update documentation of {max,min}_perf_pct sysfs files
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Date: Fri, 20 Jun 2014 07:28:00 -0700
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From: Dirk Brandewie <dirk.j.brandewie@intel.com>
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Update documentation to make the interpretation of the values clearer
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References: https://bugzilla.kernel.org/show_bug.cgi?id=64251
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Cc: Stable <stable@vger.kernel.org> [3.13+]
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Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
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---
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Documentation/cpu-freq/intel-pstate.txt | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/Documentation/cpu-freq/intel-pstate.txt b/Documentation/cpu-freq/intel-pstate.txt
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index e742d21..a69ffe1 100644
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--- a/Documentation/cpu-freq/intel-pstate.txt
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+++ b/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
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/sys/devices/system/cpu/intel_pstate/
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max_perf_pct: limits the maximum P state that will be requested by
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- the driver stated as a percentage of the available performance.
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+ the driver stated as a percentage of the available performance. The
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+ available (P states) performance may be reduced by the no_turbo
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+ setting described below.
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min_perf_pct: limits the minimum P state that will be requested by
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- the driver stated as a percentage of the available performance.
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+ the driver stated as a percentage of the max (non-turbo)
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+ performance level.
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no_turbo: limits the driver to selecting P states below the turbo
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frequency range.
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--
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1.9.0
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--
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