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    SubjectRe: [PATCH for 2.5] preemptible kernel

    george anzinger writes:
    > By the by, if a preemption lock is all that is needed the patch defines
    > it and it is rather fast (an inc going in and a dec & test comming
    > out). A lot faster than a spin lock with its "LOCK" access. A preempt
    > lock does not need to be "LOCK"ed because the only contender is the same
    > cpu.

    So we would have to invoke this thing around every set of
    smp_processor_id() references?

    David S. Miller
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