> hmm, right, the same way "priority inheritence protocols" (Sha et al.)
> for the priority inversion problem is "academic." :-]

An academic solution to an academic problem.  Ever notice that Plan 9
has process priorities that influence scheduling, but interrupts are
either on (spllo) or off (splhi)?  That simplification, which was a
step I took when I wrote the very first version of the kernel, fixed a
problem I didn't even know existed at the time.  Another blow struck
in the fight for simplicity.

-rob