[ RFC patch 0/4]: use runnable load avg in cfs balance instead of instant load

[Alex Shi]

This patchset can be used, but causes burst waking benchmark aim9 drop 5~7%
on my 2 sockets machine. The reason is too light runnable load in early stage
of waked tasks cause imbalance in balancing.

So, it is immature and just a reference for guys who want to go gurther.

Thanks!
Alex

[PATCH 1/4] sched: update cpu load after task_tick.
[PATCH 2/4] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task
[PATCH 3/4] sched: consider runnable load average in move_tasks
[PATCH 4/4] sched: consider runnable load average in effective_load
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