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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-07-26 19:44:26 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-07-26 19:44:26 +0100
commit6d9b37a3a80195d317887ff81aad6a58a66954b5 (patch)
tree98d1c96416b660070b1fd37dbbc0c80d39c55b98 /include/asm-arm/bitops.h
parent9560782f9a68a5de3e72bc3ba71317f373844549 (diff)
[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.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-arm/bitops.h b/include/asm-arm/bitops.h
index 4edd4dc40c5..c1adc6b3e86 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.