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[PATCH v3 0/3] Stop sched tick in idle injection task

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Changelog:
v3:	- rearrange idle.c change based on Rafael's suggestion.

v2:
	- moved duration timer from powerclamp driver to play_idle()
	- unexport cpuidle_use_deepest_state
	- indentation fix

Idle injection drivers today use RT threads to run idle loop. There are
efficiency and accounting issues with the current intel_powerclamp.c
and acpi_pad.c. A while ago, I posted CFS based idle injection patch trying
to address them:
https://lkml.org/lkml/2015/11/13/576

Peter proposed another approach with the introduction of a PF_IDLE flag.
This patchset is based on his original posting:
https://lkml.org/lkml/2014/6/4/56

These patches apply on top of the kworker and cpu hotplug state machine
changes made to Intel powerclamp driver.
https://lkml.org/lkml/2016/10/17/362

Similar changes to ACPI PAD driver is developed along with other
enhancements. It will be posted after this patchset is accepted.

Jacob Pan (2):
  cpuidle: allow setting deepest idle
  thermal/powerclamp: stop sched tick in forced idle

Peter Zijlstra (1):
  idle: add support for tasks that inject idle

 drivers/cpuidle/cpuidle.c          |  11 +++
 drivers/thermal/intel_powerclamp.c |  35 +------
 include/linux/cpu.h                |   2 +
 include/linux/cpuidle.h            |   4 +-
 include/linux/sched.h              |   3 +-
 kernel/fork.c                      |   3 +
 kernel/sched/core.c                |   1 +
 kernel/sched/idle.c                | 183 +++++++++++++++++++++++--------------
 8 files changed, 139 insertions(+), 103 deletions(-)

-- 
1.9.1

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[PATCH v3 0/3] Stop sched tick in idle injection task Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-11-23 21:20 +0100
  [PATCH v3 3/3] thermal/powerclamp: stop sched tick in forced idle Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-11-23 21:20 +0100
  Re: [PATCH v3 0/3] Stop sched tick in idle injection task "Rafael J. Wysocki" <rafael@kernel.org> - 2016-11-23 22:20 +0100
    Re: [PATCH v3 0/3] Stop sched tick in idle injection task Peter Zijlstra <peterz@infradead.org> - 2016-11-23 22:50 +0100
      Re: [PATCH v3 0/3] Stop sched tick in idle injection task "Rafael J. Wysocki" <rafael@kernel.org> - 2016-11-23 23:40 +0100
        Re: [PATCH v3 0/3] Stop sched tick in idle injection task Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-11-24 01:30 +0100
          Re: [PATCH v3 0/3] Stop sched tick in idle injection task "Rafael J. Wysocki" <rafael@kernel.org> - 2016-11-24 01:30 +0100
    Re: [PATCH v3 0/3] Stop sched tick in idle injection task Ingo Molnar <mingo@kernel.org> - 2016-11-24 06:40 +0100

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