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Diffstat (limited to 'arch/powerpc/include/asm/barrier.h')
-rw-r--r--arch/powerpc/include/asm/barrier.h33
1 files changed, 10 insertions, 23 deletions
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
index 0eca6efc0..c0deafc21 100644
--- a/arch/powerpc/include/asm/barrier.h
+++ b/arch/powerpc/include/asm/barrier.h
@@ -34,8 +34,6 @@
#define rmb() __asm__ __volatile__ ("sync" : : : "memory")
#define wmb() __asm__ __volatile__ ("sync" : : : "memory")
-#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); mb(); } while (0)
-
#ifdef __SUBARCH_HAS_LWSYNC
# define SMPWMB LWSYNC
#else
@@ -46,22 +44,11 @@
#define dma_rmb() __lwsync()
#define dma_wmb() __asm__ __volatile__ (stringify_in_c(SMPWMB) : : :"memory")
-#ifdef CONFIG_SMP
-#define smp_lwsync() __lwsync()
-
-#define smp_mb() mb()
-#define smp_rmb() __lwsync()
-#define smp_wmb() __asm__ __volatile__ (stringify_in_c(SMPWMB) : : :"memory")
-#else
-#define smp_lwsync() barrier()
+#define __smp_lwsync() __lwsync()
-#define smp_mb() barrier()
-#define smp_rmb() barrier()
-#define smp_wmb() barrier()
-#endif /* CONFIG_SMP */
-
-#define read_barrier_depends() do { } while (0)
-#define smp_read_barrier_depends() do { } while (0)
+#define __smp_mb() mb()
+#define __smp_rmb() __lwsync()
+#define __smp_wmb() __asm__ __volatile__ (stringify_in_c(SMPWMB) : : :"memory")
/*
* This is a barrier which prevents following instructions from being
@@ -72,23 +59,23 @@
#define data_barrier(x) \
asm volatile("twi 0,%0,0; isync" : : "r" (x) : "memory");
-#define smp_store_release(p, v) \
+#define __smp_store_release(p, v) \
do { \
compiletime_assert_atomic_type(*p); \
- smp_lwsync(); \
+ __smp_lwsync(); \
WRITE_ONCE(*p, v); \
} while (0)
-#define smp_load_acquire(p) \
+#define __smp_load_acquire(p) \
({ \
typeof(*p) ___p1 = READ_ONCE(*p); \
compiletime_assert_atomic_type(*p); \
- smp_lwsync(); \
+ __smp_lwsync(); \
___p1; \
})
-#define smp_mb__before_atomic() smp_mb()
-#define smp_mb__after_atomic() smp_mb()
#define smp_mb__before_spinlock() smp_mb()
+#include <asm-generic/barrier.h>
+
#endif /* _ASM_POWERPC_BARRIER_H */