diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2014-03-13 22:00:37 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-04-18 13:40:33 +0400 |
| commit | 8715466b602729061394df18864ea64b97951589 (patch) | |
| tree | 4ff3109c25f89b45b041bd9ef1360644eb2e7f77 /arch/arm64/include/asm/barrier.h | |
| parent | 030d0178bdbd237c1f0577f03bbc1d7140a75044 (diff) | |
| download | linux-8715466b602729061394df18864ea64b97951589.tar.xz | |
arch,arm64: Convert smp_mb__*()
AARGH64 uses ll/sc primitives that do not imply any barriers for the
normal atomics, therefore smp_mb__{before,after} should be a full
barrier.
Since AARGH64 doesn't use asm-generic/barrier.h, add the required
definitions to its asm/barrier.h.
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-8p5iclqgy78al33kck3ht7nr@git.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chen Gang <gang.chen@asianux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/barrier.h')
| -rw-r--r-- | arch/arm64/include/asm/barrier.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h index 66eb7648043b..48b9e704af7c 100644 --- a/arch/arm64/include/asm/barrier.h +++ b/arch/arm64/include/asm/barrier.h @@ -98,6 +98,9 @@ do { \ #define set_mb(var, value) do { var = value; smp_mb(); } while (0) #define nop() asm volatile("nop"); +#define smp_mb__before_atomic() smp_mb() +#define smp_mb__after_atomic() smp_mb() + #endif /* __ASSEMBLY__ */ #endif /* __ASM_BARRIER_H */ |