kernel_optimize_test/Documentation/cpu-freq
Rafael J. Wysocki fb1fe1041c cpufreq: intel_pstate: Operation mode control from sysfs
Make it possible to change the operation mode of intel_pstate with
the help of a new sysfs attribute called "status".

There are three possible configurations that can be selected using
this attribute:

 "off"     - The driver is not in use at this time.
 "active"  - The driver works as a P-state governor (default).
 "passive" - The driver works as a regular cpufreq one and collaborates
             with the generic cpufreq governors (it sets P-states as
             requested by those governors).  [This is the same mode
             the driver can be started in by passing intel_pstate=passive
             in the kernel command line.]

The current setting is returned by reads from this attribute.  Writing
one of the above strings to it changes the operation mode as indicated
by that string, if possible.

If HW-managed P-states (HWP) feature is enabled, it is not possible
to change the driver's operation mode and attempts to write to this
attribute will fail.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-04 00:05:31 +01:00
..
amd-powernow.txt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
boost.txt Documentation: cpufreq / boost: Update BOOST documentation 2014-01-17 02:00:45 +01:00
core.txt cpufreq: Documentation: Updates based on current code 2017-02-03 23:59:40 +01:00
cpu-drivers.txt cpufreq: Documentation: Updates based on current code 2017-02-03 23:59:40 +01:00
cpufreq-nforce2.txt Fix typos in /Documentation : Misc 2006-11-30 05:21:10 +01:00
cpufreq-stats.txt cpufreq: Documentation: Updates based on current code 2017-02-03 23:59:40 +01:00
governors.txt cpufreq: Documentation: Updates based on current code 2017-02-03 23:59:40 +01:00
index.txt cpufreq: Documentation: Updates based on current code 2017-02-03 23:59:40 +01:00
intel-pstate.txt cpufreq: intel_pstate: Operation mode control from sysfs 2017-02-04 00:05:31 +01:00
pcc-cpufreq.txt Revert "cpufreq: pcc-cpufreq: update default value of cpuinfo_transition_latency" 2016-07-22 23:51:06 +02:00
user-guide.txt cpufreq: Documentation: Updates based on current code 2017-02-03 23:59:40 +01:00