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Subject[patch] O(1) scheduler, 2.5.2-pre9-C1

i've uploaded an updated O(1) scheduler patch, against 2.5.2-pre9:

only minimal fixes were added to the code, the goal is to reach a stable


- fixed the mozilla crash, forgot to revert the ->prio value in
setscheduler() which caused a wrong index ... (many thanks go to Pawel
Kot for testing this out.)

- fixed a load balancer bug that would get the runqueue count incorrectly
if there is a RT running. With this fixed a 2-CPU system is completely
usable even if a RT task is taking up 100% CPU time on one of the CPUs.

- fix the sys_sched_yield export in ksyms.c (Davide Libenzi)

- adds an RT event counter to optimize RT scheduling. (Davide, me)


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