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    SubjectRe: [PATCH] time: Add locking to xtime access in get_seconds()
    Date
    John Stultz <john.stultz@linaro.org> writes:

    > From: John Stultz <johnstul@us.ibm.com>
    >
    > So get_seconds() has always been lock free, with the assumption
    > that accessing a long will be atomic.
    >
    > However, recently I came across an odd bug where time() access could
    > occasionally be inconsistent, but only on power7 hardware. The

    Shouldn't a single rmb() be enough to avoid that?

    If not then I suspect there's a lot more code buggy on that CPU than
    just the time.

    -Andi

    --
    ak@linux.intel.com -- Speaking for myself only


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