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linux-stable-mirror/include/linux
Boqun Feng e1ab7f39d7 atomics: Allow architectures to define their own __atomic_op_* helpers
Some architectures may have their special barriers for acquire, release
and fence semantics, so that general memory barriers(smp_mb__*_atomic())
in the default __atomic_op_*() may be too strong, so allow architectures
to define their own helpers which can overwrite the default helpers.

Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-02-18 00:11:02 +11:00
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