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| author |   Michael S. Tsirkin <mst@redhat.com> | 2015-12-21 09:22:18 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-01-12 20:46:49 +0200 |
| commit | 519be0438e6963b8efd2430e9d0595f5aeee915e (patch) | |
| tree | 8cd6c08f5e43cebc052cc76d870e24b033d571b9 /arch/sparc/include/asm/barrier_64.h | |
| parent | s390: reuse asm-generic/barrier.h (diff) | |
| download | wireguard-linux-519be0438e6963b8efd2430e9d0595f5aeee915e.tar.xz wireguard-linux-519be0438e6963b8efd2430e9d0595f5aeee915e.zip | |
sparc: reuse asm-generic/barrier.h
On sparc 64 bit dma_rmb, dma_wmb, smp_store_mb, smp_mb, smp_rmb,
smp_wmb, read_barrier_depends and smp_read_barrier_depends match the
asm-generic variants exactly. Drop the local definitions and pull in
asm-generic/barrier.h instead.
nop uses __asm__ __volatile but is otherwise identical to
the generic version, drop that as well.
This is in preparation to refactoring this code area.
Note: nop() was in processor.h and not in barrier.h as on other
architectures. Nothing seems to depend on it being there though.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'arch/sparc/include/asm/barrier_64.h')
| -rw-r--r-- | arch/sparc/include/asm/barrier_64.h | 21 |
1 files changed, 2 insertions, 19 deletions
diff --git a/arch/sparc/include/asm/barrier_64.h b/arch/sparc/include/asm/barrier_64.h index 14a928601657..26c3f7247f2d 100644 --- a/arch/sparc/include/asm/barrier_64.h +++ b/arch/sparc/include/asm/barrier_64.h @@ -37,25 +37,6 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \ #define rmb() __asm__ __volatile__("":::"memory") #define wmb() __asm__ __volatile__("":::"memory") -#define dma_rmb() rmb() -#define dma_wmb() wmb() - -#define smp_store_mb(__var, __value) \ - do { WRITE_ONCE(__var, __value); membar_safe("#StoreLoad"); } while(0) - -#ifdef CONFIG_SMP -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() -#else -#define smp_mb() __asm__ __volatile__("":::"memory") -#define smp_rmb() __asm__ __volatile__("":::"memory") -#define smp_wmb() __asm__ __volatile__("":::"memory") -#endif - -#define read_barrier_depends() do { } while (0) -#define smp_read_barrier_depends() do { } while (0) - #define smp_store_release(p, v) \ do { \ compiletime_assert_atomic_type(*p); \ @@ -74,4 +55,6 @@ do { \ #define smp_mb__before_atomic() barrier() #define smp_mb__after_atomic() barrier() +#include <asm-generic/barrier.h> + #endif /* !(__SPARC64_BARRIER_H) */ |