On mips 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 <m...@redhat.com>
Acked-by: Arnd Bergmann <a...@arndb.de>
---
arch/mips/include/asm/barrier.h | 25 ++-----------------------
1 file changed, 2 insertions(+), 23 deletions(-)
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h
index 752e0b8..3eac4b9 100644
--- a/arch/mips/include/asm/barrier.h
+++ b/arch/mips/include/asm/barrier.h
@@ -10,9 +10,6 @@
#include <asm/addrspace.h>
-#define read_barrier_depends() do { } while(0)
-#define smp_read_barrier_depends() do { } while(0)
-
#ifdef CONFIG_CPU_HAS_SYNC
#define __sync() \
__asm__ __volatile__( \
@@ -87,8 +84,6 @@
#define wmb() fast_wmb()
#define rmb() fast_rmb()
-#define dma_wmb() fast_wmb()
-#define dma_rmb() fast_rmb()
#if defined(CONFIG_WEAK_ORDERING) && defined(CONFIG_SMP)
# ifdef CONFIG_CPU_CAVIUM_OCTEON
@@ -112,9 +107,6 @@
#define __WEAK_LLSC_MB " \n"
#endif
-#define smp_store_mb(var, value) \
- do { WRITE_ONCE(var, value); smp_mb(); } while (0)
-
#define smp_llsc_mb() __asm__ __volatile__(__WEAK_LLSC_MB : : :"memory")
#ifdef CONFIG_CPU_CAVIUM_OCTEON
@@ -129,22 +121,9 @@
#define nudge_writes() mb()
#endif
-#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() smp_mb__before_llsc()
#define smp_mb__after_atomic() smp_llsc_mb()
+#include <asm-generic/barrier.h>
+
#endif /* __ASM_BARRIER_H */
--
MST
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