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    SubjectRe: [Openipmi-developer] [PATCH 3/4] IPMI: convert locked counters to atomics
    Matt Domsch wrote:
    > On Thu, Feb 14, 2008 at 12:30:51PM -0600, Corey Minyard wrote:
    >
    >> From: Konstantin Baydarov <kbaidarov@ru.mvista.com>
    >>
    >> Atomics are a lot more efficient and neat than using a lock.
    >>
    >
    > per_cpu variables are a lot more efficient and neat than using locks
    > for simple statistics. no cache line bouncing to increment the
    > counter. Are these read so often that atomics are really better?
    >
    I agree, I'll put this in the plan for the future. I don't have time to
    do it at this point, but the changes made in these patches should make
    it easy to change in the future.

    Thanks,

    -corey


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