Vineet Gupta 470c27e469 arch: conditionally define smp_{mb,rmb,wmb}
That way arches can define the minimal versions and still #include
asm-generic for defaults (vs. defining defaults in arch code)

See new barrier.h in arc for usage !

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-25 06:00:17 +05:30
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