> But the other side of the coin is that a SCHED_FIFO userspace task > presumably has extreme latency requirements, so it doesn't *want* to be > preempted by some routine kernel operation. People would get irritated if > we were to do that.
Just to follow up a bit. People writing apps that run at SCHED_FIFO know that they aren't getting hard real-time, and they are OK with that. If they wanted something more they'd run on RTLinux. Why would it be wrong to preempt the SCHED_FIFO process in the case, assuming that it is too hard to fix a broken design that doesn't allow the necessary kernel threads to run on any CPU? Chad - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
