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Hi, yodaiken@fsmlabs.com wrote: > I believe that the preempt path leads inexorably to > mutex-with-stupid-priority-trick and that would be very unfortunate indeed. > It's unavoidable because sooner or later someone will find that preempt + > SCHED_FIFO leads to > niced app 1 in K mode gets Sem A > SCHED_FIFO app prempts and blocks on Sem A > whoops! app 2 in K more preempts niced app 1 Please explain what's different without the preempt patch. > Hey my DVD player has stalled, lets add sem_with_revolting_priority_trick! > Why the hell is UP Windows XP3 blowing away my Linux box on DVD playing while > Linux now runs with the grace and speed of IRIX? Because the IRIX implementation sucks, every implementation has to suck? Somehow I have the suspicion you're trying to discourage everyone from even trying, because if he'd succeeded you'd loose a big chunk of potential RTLinux customers. bye, Roman - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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