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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-07-26 20:44:26 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-07-26 20:44:26 +0200 |
| commit | 6d9b37a3a80195d317887ff81aad6a58a66954b5 (patch) | |
| tree | 98d1c96416b660070b1fd37dbbc0c80d39c55b98 /include/asm-arm/bitops.h | |
| parent | [PATCH] ARM SMP: Use exclusive load/store for __xchg (diff) | |
| download | linux-6d9b37a3a80195d317887ff81aad6a58a66954b5.tar.xz linux-6d9b37a3a80195d317887ff81aad6a58a66954b5.zip | |
[PATCH] ARM SMP: Add ARMv6 memory barriers
Convert explicit gcc asm-based memory barriers into smp_mb() calls.
These change between barrier() and the ARMv6 data memory barrier
instruction depending on whether ARMv6 SMP is enabled.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/bitops.h')
| -rw-r--r-- | include/asm-arm/bitops.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-arm/bitops.h b/include/asm-arm/bitops.h index 4edd4dc40c5b..c1adc6b3e86d 100644 --- a/include/asm-arm/bitops.h +++ b/include/asm-arm/bitops.h @@ -21,8 +21,8 @@ #include <asm/system.h> -#define smp_mb__before_clear_bit() do { } while (0) -#define smp_mb__after_clear_bit() do { } while (0) +#define smp_mb__before_clear_bit() mb() +#define smp_mb__after_clear_bit() mb() /* * These functions are the basis of our bit ops. |