[PATCH 0/3] sched/fair: Reduce contention on tg's load_avg

[Waiman Long <Waiman.Long@hpe.com>]

This patch series tries to reduce contention on task_group's load_avg
to improve system performance. It also tries to optimize the use of
idle_cpu() call in update_sg_lb_stats().

Waiman Long (3):
  sched/fair: Avoid redundant idle_cpu() call in update_sg_lb_stats()
  sched/fair: Move hot load_avg into its own cacheline
  sched/fair: Use different cachelines for readers and writers of
    load_avg

 kernel/sched/core.c  |    9 +++++++++
 kernel/sched/fair.c  |   40 +++++++++++++++++++++++++++++++++++-----
 kernel/sched/sched.h |   15 ++++++++++++++-
 3 files changed, 58 insertions(+), 6 deletions(-)