> Schedule_timeout() can be replaced by a simple resorting of
> the heap. Basically we only need to remove processes from
> the heap if they do blocking I/O or wait for a signal
> (otherwise they would clutter up the heap).
schedule_timeout() is not really expected to have high performance. Its
functionality was moved out of the main scheduler partly for this reason.
Btw., the timer code (which is used by schedule_timeout() intrnally) has a
sort of heap structure already.
-- mingo
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