Hmm.. Are there any other kind?
Another way of saying this: how can a conditional schedule _ever_ be
nothing but a waste of cycles and code size with preemption enabled?
If the reason is the BKL, then I would much prefer those paths to be
BKL-fixed, than have two different conditional schedules.
In short, I'd rather get a patch that just unconditionally makes the
conditional schedules no-ops with preemption enabled. That would seem to
make a lot more sense.
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