13.04 HMP Patches V2

Hi Tixy, these are the current state of the patches for your review. Obviously, there is a bit of squash and rebase required - 5 and 6 will probably be best rolled into patch 3, but I wanted you to see them separately first.

--Chris

[PATCH 1/6] hmp: sched: Clean up hmp_up_threshold checks into a [PATCH 2/6] sched: hmp: unify active migration code [PATCH 3/6] hmp: Use idle pull to perform forced up-migrations [PATCH 4/6] hmp: dont attempt to pull tasks if affinity doesn't [PATCH 5/6] sched: hmp: select keepalive delay based upon idle [PATCH 6/6] sched: hmp: simplify logic around triggering resched for