diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-devices-system-cpu')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-system-cpu | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index 468e4d48f88..acb9bfc89b4 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -128,7 +128,7 @@ Description: Discover cpuidle policy and mechanism What: /sys/devices/system/cpu/cpu#/cpufreq/* Date: pre-git history -Contact: cpufreq@vger.kernel.org +Contact: linux-pm@vger.kernel.org Description: Discover and change clock speed of CPUs Clock scaling allows you to change the clock speed of the @@ -146,7 +146,7 @@ Description: Discover and change clock speed of CPUs What: /sys/devices/system/cpu/cpu#/cpufreq/freqdomain_cpus Date: June 2013 -Contact: cpufreq@vger.kernel.org +Contact: linux-pm@vger.kernel.org Description: Discover CPUs in the same CPU frequency coordination domain freqdomain_cpus is the list of CPUs (online+offline) that share @@ -200,3 +200,27 @@ Description: address and size of the percpu note. note of cpu#. crash_notes_size: size of the note of cpu#. + + +What: /sys/devices/system/cpu/intel_pstate/max_perf_pct + /sys/devices/system/cpu/intel_pstate/min_perf_pct + /sys/devices/system/cpu/intel_pstate/no_turbo +Date: February 2013 +Contact: linux-pm@vger.kernel.org +Description: Parameters for the Intel P-state driver + + Logic for selecting the current P-state in Intel + Sandybridge+ processors. The three knobs control + limits for the P-state that will be requested by the + driver. + + max_perf_pct: limits the maximum P state that will be requested by + the driver stated as a percentage of the available performance. + + min_perf_pct: limits the minimum P state that will be requested by + the driver stated as a percentage of the available performance. + + no_turbo: limits the driver to selecting P states below the turbo + frequency range. + + More details can be found in Documentation/cpu-freq/intel-pstate.txt |