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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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7
arch/ia64/include/asm/atomic.h
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@@ -15,6 +15,7 @@
#include <linux/types.h>
#include <asm/intrinsics.h>
#include <asm/barrier.h>
#define ATOMIC_INIT(i) { (i) }
@@ -208,10 +209,4 @@ atomic64_add_negative (__s64 i, atomic64_t *v)
#define atomic64_inc(v) atomic64_add(1, (v))
#define atomic64_dec(v) atomic64_sub(1, (v))
/* Atomic operations are already serializing */
#define smp_mb__before_atomic_dec() barrier()
#define smp_mb__after_atomic_dec() barrier()
#define smp_mb__before_atomic_inc() barrier()
#define smp_mb__after_atomic_inc() barrier()
#endif /* _ASM_IA64_ATOMIC_H */