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    SubjectRe: SMP syncronization on AMD processors (broken?)
    On Thu, 2005-10-06 at 17:05 +0400, Kirill Korotaev wrote:
    > Hello Linus, Andrew and others,
    > Please help with a not simple question about spin_lock/spin_unlock on
    > SMP archs. The question is whether concurrent spin_lock()'s should
    > acquire it in more or less "fair" fashinon or one of CPUs can starve any
    > arbitrary time while others do reacquire it in a loop.

    spinlocks are designed to not be fair. or rather are allowed to not be.
    If you want them to be fair on x86 you need at minimum to put a
    cpu_relax() in your busy loop...

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