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    SubjectRe: [PATCH] improve spinlock debugging
    Nigel Gamble wrote:
    >
    > On Tue, 4 Dec 2001, george anzinger wrote:
    > > For example, preemption currently counts
    > > up on spin_lock and disable irq, counting the spin_lockirq twice. In
    >
    > That's not correct: we don't count it twice because we don't count
    > local_irq_disable etc., only the spin locks. Because...
    >
    > > (Oh, and since the irq
    > > inhibits preemption all by itself, we don't need to count it either.)
    >
    > ...so we don't.

    Right, but we do count spin_lockirq (just once). See other email, this
    time.

    --
    George george@mvista.com
    High-res-timers: http://sourceforge.net/projects/high-res-timers/
    Real time sched: http://sourceforge.net/projects/rtsched/
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