linux.git/Documentation/cpu-freq, branch v4.11

Merge tag 'docs-4.11' of git://git.lwn.net/linux

2017-02-23T02:51:29+00:00

Pull documentation updates from Jonathan Corbet:
 "A slightly quieter cycle for documentation this time around.

  Three more DocBook template files have been converted to RST; only 21
  to go. There are various build improvements and the usual array of
  documentation improvements and fixes"

* tag 'docs-4.11' of git://git.lwn.net/linux: (44 commits)
  docs / driver-api: Fix structure references in device_link.rst
  PM / docs: Fix structure references in device.rst
  Add a target to check broken external links in the Documentation
  Documentation: Fix linux-api list typo
  Documentation: DocBook/Makefile comment typo
  Improve sparse documentation
  Documentation: make Makefile.sphinx no-ops quieter
  Documentation: DMA-ISA-LPC.txt
  Documentation: input: fix path to input code definitions
  docs: Remove the copyright year from conf.py
  docs: Fix a warning in the Korean HOWTO.rst translation
  PM / sleep / docs: Convert PM notifiers document to reST
  PM / core / docs: Convert sleep states API document to reST
  PM / core: Update kerneldoc comments in pm.h
  doc-rst: Fix recursive make invocation from macros
  doc-rst: Delete output of failed dot-SVG conversion
  doc-rst: Break shell command sequences on failure
  Documentation/sphinx: make targets independent of Sphinx work for HAVE_SPHINX=0
  doc-rst: fixed cleandoc target when used with O=dir
  Documentation/sphinx: prevent generation of .pyc files in the source tree
  ...

cpufreq: intel_pstate: Operation mode control from sysfs

2017-02-03T23:05:31+00:00

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

cpufreq: Documentation: Updates based on current code

2017-02-03T22:59:40+00:00

The cpufreq core has gone though lots of updates in recent times, but on
many occasions the documentation wasn't updated along with the code.
This patch tries to catchup the documentation with the code.

Also add Rafael and Viresh as the contributors to the documentation.

Based on a patch from Claudio Scordino.

Signed-off-by: Claudio Scordino 
Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

cpufreq: Documentation: Minor reformatting

2017-02-03T22:59:40+00:00

This patch doesn't change the content of the documentation, but rather
reformat it to make it more readable.

Signed-off-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

Note that the POWER[89] processors are supported.

2017-01-04T21:35:34+00:00

Documentation: cpufreq: Update supported powernv processors

Signed-off-by: Shilpasri G Bhat 
Acked-by: Viresh Kumar 
Signed-off-by: Jonathan Corbet

Documentation: intel_pstate: Document HWP energy/performance hints

2016-12-08T00:43:05+00:00

Updated documentation for the support of energy performance hint in
the HWP mode.

Signed-off-by: Srinivas Pandruvada 
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki

cpufreq: stats: New sysfs attribute for clearing statistics

2016-11-11T00:51:11+00:00

Allow CPUfreq statistics to be cleared by writing anything to
/sys/.../cpufreq/stats/reset.

Signed-off-by: Markus Mayer 
Acked-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki

Documentation: intel_pstate: Update per core limits

2016-11-01T05:04:06+00:00

Document restriction on per core P-State control.

Signed-off-by: Srinivas Pandruvada 
Signed-off-by: Rafael J. Wysocki

Documentation: intel_pstate: PID tuning is not always available

2016-10-21T20:17:32+00:00

PID tuning is not available when the get_target_pstate_use_cpu_load()
is used to calculate target_state. So update the documentation.

Signed-off-by: Srinivas Pandruvada 
Signed-off-by: Rafael J. Wysocki

cpufreq-stats: Minor documentation fix

2016-09-08T21:05:07+00:00

The cpufreq-stats code can no longer be built as a module, so it now
appears with square brackets in menuconfig.

Signed-off-by: Jean Delvare 
Fixes: 1aefc75b2449 (cpufreq: stats: Make the stats code non-modular)
Acked-by: Viresh Kumar 
Signed-off-by: Rafael J. Wysocki