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    SubjectRe: SMP linux help

    On Sun, 5 Sep 1999, Jamie Lokier wrote:

    > Actually the kernel lock is different to other spinlocks.
    > When a task holding the kernel lock blocks, i.e. calls schedule(), the
    > lock is dropped. When the task is run again, the lock is reacquired.

    yes. The kernel lock can be best described as a 'spin-semaphore'. We might
    want to change it to a real semaphore in the future, now that the locked
    regions are getting much longer (multi-millisec). 2.5 stuff i guess.

    -- mingo

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