however i did notice one small change wrt to SCHED_YIELD
semantics from 2.2.18 and 2.4.1-ac1 (one would assume that this change
happened during the schedule() re-writes during 2.3.x).
xref line 119 of kernel/sched.c in 2.2.18
xref line 148 of kernel/sched.c in 2.4.1-ac1
in this case you will see that in 2.2.18 a SCHED_YIELD process will
get a "goodness" value of 0, however in 2.4.1-ac1 you will find that
it gets a value of -1 (and hence a lower scheduling priority). i dont
have a machine handy that is running 2.2.18 that i can patch and
reboot, how ever you may wish to change the return value on line 119
of kernel/sched.c in 2.2.18 to -1 and you may find that it might give
the behaviour you are looking for. it may also cause other
problems. caveat emptor and all that..
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