forked from Minki/linux
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>
This commit is contained in:
parent
90ff6a17d0
commit
abe114d9f0
@ -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 */
|
||||
|
Loading…
Reference in New Issue
Block a user