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    SubjectRe: [(RT RFC) PATCH v2 8/9] adjust pi_lock usage in wakeup
    On Mon 2008-02-25 11:01:18, Gregory Haskins wrote:
    > From: Peter W.Morreale <>
    > In wakeup_next_waiter(), we take the pi_lock, and then find out whether
    > we have another waiter to add to the pending owner. We can reduce
    > contention on the pi_lock for the pending owner if we first obtain the
    > pointer to the next waiter outside of the pi_lock.
    > This patch adds a measureable increase in throughput.
    > Signed-off-by: Peter W. Morreale <>

    Missing sign-off.

    (cesky, pictures)

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