[PATCH 0/3 v2] Reduce number of active LB

[Vincent Guittot]

Few improvements related to active LB and the increase of LB interval.
I haven't seen any performcne impact on various benchmarks except for 
  -stress-ng mmapfork : +4.54% on my octo-core arm64
But this was somewhat expected as the changes impact mainly corner cases.

Changes since v1:
- patch 2: change how LBF_ALL_PINNED is managed as proposed by Valentin
- patch 3: updated comment and fix typos
  
Vincent Guittot (3):
  sched/fair: skip idle cfs_rq
  sched/fair: don't set LBF_ALL_PINNED unnecessarily
  sched/fair: reduce cases for active balance

 kernel/sched/fair.c | 57 +++++++++++++++++++++++++--------------------
 1 file changed, 32 insertions(+), 25 deletions(-)

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2.17.1