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arch,ia64: Convert smp_mb__*()

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ia64 atomic ops are full barriers; implement the new
smp_mb__{before,after}_atomic().

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/n/tip-hyp7yj68cmqz1nqbfpr541ca@git.kernel.org
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-ia64@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Peter Zijlstra
2014-03-13 19:00:36 +01:00
committed by Ingo Molnar
parent 94cf42f823
commit 0cd64efb61
3 changed files with 6 additions and 10 deletions
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3
arch/ia64/include/asm/barrier.h
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@@ -55,6 +55,9 @@
#endif
#define smp_mb__before_atomic() barrier()
#define smp_mb__after_atomic() barrier()
/*
* IA64 GCC turns volatile stores into st.rel and volatile loads into ld.acq no
* need for asm trickery!