[PATCH v4] cgroup/freezer: add per freezer duty ratio control

[jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org]

From: Jacob Pan <jacob.jun.pan-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

Fixing subject in cover letter, should be v4 instead of v3

Changelog:
v4:	- limit kthread creation only when valid duty ratio
	  parameters are given.
	- changed period back to milisecond
	- consolidated paramter write functions

v3:	- added documentation

v2:
	- use read_u64/write_u64 instead of string read/write
	- use period in second instead of ms
	- renamed duty_ratio to duty_ratio_pct, be more specific
	- removed locking around period and duty_ratio reads


Jacob Pan (1):
  cgroup/freezer: add per freezer duty ratio control

 Documentation/cgroups/freezer-subsystem.txt |   23 ++++++
 kernel/cgroup_freezer.c                     |  109 ++++++++++++++++++++++++++-
 2 files changed, 130 insertions(+), 2 deletions(-)