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authorMichael S. Tsirkin <mst@redhat.com>2015-12-21 09:22:18 +0200
committerMichael S. Tsirkin <mst@redhat.com>2016-01-12 20:46:50 +0200
commitabe114d9f0a80f27bc5040cd2287dca80423d13e (patch)
treebdafde450ec21e4c37e618ac7324f35a773212f1 /arch/metag
parent90ff6a17d0e07d689886cba4244674bfd41e7a2d (diff)
metag: reuse asm-generic/barrier.h
On metag dma_rmb, dma_wmb, smp_store_mb, read_barrier_depends, smp_read_barrier_depends, smp_store_release and smp_load_acquire 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@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: James Hogan <james.hogan@imgtec.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'arch/metag')
-rw-r--r--arch/metag/include/asm/barrier.h25
1 files changed, 2 insertions, 23 deletions
diff --git a/arch/metag/include/asm/barrier.h b/arch/metag/include/asm/barrier.h
index 172b7e5efc53..b5b778bb0b33 100644
--- a/arch/metag/include/asm/barrier.h
+++ b/arch/metag/include/asm/barrier.h
@@ -44,9 +44,6 @@ static inline void wr_fence(void)
#define rmb() barrier()
#define wmb() mb()
-#define dma_rmb() rmb()
-#define dma_wmb() wmb()
-
#ifndef CONFIG_SMP
#define fence() do { } while (0)
#define smp_mb() barrier()
@@ -81,27 +78,9 @@ static inline void fence(void)
#endif
#endif
-#define read_barrier_depends() do { } while (0)
-#define smp_read_barrier_depends() do { } while (0)
-
-#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } while (0)
-
-#define smp_store_release(p, v) \
-do { \
- compiletime_assert_atomic_type(*p); \
- smp_mb(); \
- WRITE_ONCE(*p, v); \
-} while (0)
-
-#define smp_load_acquire(p) \
-({ \
- typeof(*p) ___p1 = READ_ONCE(*p); \
- compiletime_assert_atomic_type(*p); \
- smp_mb(); \
- ___p1; \
-})
-
#define smp_mb__before_atomic() barrier()
#define smp_mb__after_atomic() barrier()
+#include <asm-generic/barrier.h>
+
#endif /* _ASM_METAG_BARRIER_H */