This defines __smp_xxx barriers for tile,
for use by virtualization.
Some smp_xxx barriers are removed as they are
defined correctly by asm-generic/barriers.h
Note: for 32 bit, keep smp_mb__after_atomic around since it's faster
than the generic implementation.
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
Acked-by: Arnd Bergmann <a...@arndb.de>
---
arch/tile/include/asm/barrier.h | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/tile/include/asm/barrier.h b/arch/tile/include/asm/barrier.h
index 96a42ae..d552228 100644
--- a/arch/tile/include/asm/barrier.h
+++ b/arch/tile/include/asm/barrier.h
@@ -79,11 +79,12 @@ mb_incoherent(void)
* But after the word is updated, the routine issues an "mf" before returning,
* and since it's a function call, we don't even need a compiler barrier.
*/
-#define smp_mb__before_atomic() smp_mb()
-#define smp_mb__after_atomic() do { } while (0)
+#define __smp_mb__before_atomic() __smp_mb()
+#define __smp_mb__after_atomic() do { } while (0)
+#define smp_mb__after_atomic() __smp_mb__after_atomic()
#else /* 64 bit */
-#define smp_mb__before_atomic() smp_mb()
-#define smp_mb__after_atomic() smp_mb()
+#define __smp_mb__before_atomic() __smp_mb()
+#define __smp_mb__after_atomic() __smp_mb()
#endif
#include <asm-generic/barrier.h>
--
MST
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