Re: [PATCH 0/2] cpustat: use atomic operations to read/update stats

[Peter Zijlstra]

On Fri, 2013-02-22 at 13:50 +0100, Frederic Weisbecker wrote:
> atomic64_read() and atomic64_set() are supposed to take care of that,
> without
> even the need for _inc() or _add() parts that use LOCK.

Are you sure? Generally atomic*_set() is not actually an atomic
operation.

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