[PATCH v4 0/4] small fix for scale usage

[Lei Wen <leiwen@marvell.com>]

Here are three patches which correct scale usage in both fix_small_imbalance
and update_sg_lb_stats.

And give out comment over when fix_small_imbalance would cause load change.

V2: fix scale usage for update_sg_lb_stats

V3: fix scale problem in comparing sds->busiest_load_per_task
    and sds->avg_load when there is not balanced group inside the domain

V4: env->imbalance should be applied with not scaled value, fix according to it.
    Fix one ping-pong adjustment for special case.

Lei Wen (4):
  sched: reduce calculation effort in fix_small_imbalance
  sched: scale the busy and this queue's per-task load before compare
  sched: scale cpu load for judgment of group imbalance
  sched: adjust fix_small_imbalance moving task condition

 kernel/sched/fair.c |   85 ++++++++++++++++++++++++++++++++-------------------
 1 file changed, 54 insertions(+), 31 deletions(-)

-- 
1.7.10.4