Hi!

Here a fairly eclectic mix of patches.

The first is a very old patch I recently re-discovered in my patch cabinet.

The next two are cleanups that came about from the recent newidle patches.

And the final two are from an earlier discussion with TJ about tracking wakeups
across classes. This informs a sched_class it no longer has access to the CPU
and can look at pushing tasks away. The case in point was sched_ext, but IIRC
this very same point once came up for sched_rt as well.