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    SubjectRe: [BUG] cpu-hotplug: Can't offline the CPU with naughty realtime processes
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    On Tue, 2007-05-08 at 12:29 +0900, Satoru Takeuchi wrote:
    > At Tue, 08 May 2007 13:02:25 +1000,
    > Rusty Russell wrote:
    > > We used to be able to create kernel threads higher than any userspace
    > > priority. If this is no longer true, I think that's OK: equal priority
    > > still means we'll get scheduled, right?
    >
    > IF SCHED_RR, yes. However, if SCHED_FIFO, no. Such process doen't have timeslice
    > and only relinquish CPU time voluntarily.
    >
    > # Hence this problem is complicated ;-(

    OK, well, I agree with "don't do that" then 8)

    Thanks,
    Rusty.

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