Merge remote-tracking branch '318/dev/msm-3.18-sched' into msm318

* 318/dev/msm-3.18-sched:
  sched: fix incorrect type casting in trace events
  sched: kill unnecessary divisions on fast path
  sched: prevent race where update CPU cycles
  sched: fix overflow in scaled execution time calculation
  sched: remove unused parameter cpu from cpu_cycles_to_freq()
  sched: fix compilation errors with !SCHED_FREQ_INPUT
  sched: fix compilation errors with !SCHED_HMP
  sched: qhmp: optimize power_delta_exceeded() for !sched_enable_power_aware
  sched: fix potential deflated frequency estimation during IRQ handling
  sched: fix CPU frequency estimation while idle
  sched: preserve CPU cycle counter in rq

Change-Id: I12e3befbb0b7c144dc295889883d89a63c4d8b45
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>