[Xen-devel] [PATCH v2 04/32] ia64: reuse asm-generic/barrier.h

["Michael S. Tsirkin" <mst@xxxxxxxxxx>]

On ia64 smp_rmb, smp_wmb, read_barrier_depends, smp_read_barrier_depends
and smp_store_mb() match the asm-generic variants exactly. Drop the
local definitions and pull in asm-generic/barrier.h instead.

This is in preparation to refactoring this code area.

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Acked-by: Tony Luck <tony.luck@xxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 arch/ia64/include/asm/barrier.h | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/arch/ia64/include/asm/barrier.h b/arch/ia64/include/asm/barrier.h
index 209c4b8..2f93348 100644
--- a/arch/ia64/include/asm/barrier.h
+++ b/arch/ia64/include/asm/barrier.h
@@ -48,12 +48,6 @@
 # define smp_mb()      barrier()
 #endif
 
-#define smp_rmb()      smp_mb()
-#define smp_wmb()      smp_mb()
-
-#define read_barrier_depends()         do { } while (0)
-#define smp_read_barrier_depends()     do { } while (0)
-
 #define smp_mb__before_atomic()        barrier()
 #define smp_mb__after_atomic() barrier()
 
@@ -77,12 +71,12 @@ do {                                                        
                \
        ___p1;                                                          \
 })
 
-#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } 
while (0)
-
 /*
  * The group barrier in front of the rsm & ssm are necessary to ensure
  * that none of the previous instructions in the same group are
  * affected by the rsm/ssm.
  */
 
+#include <asm-generic/barrier.h>
+
 #endif /* _ASM_IA64_BARRIER_H */
-- 
MST


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