| Date | Sun, 10 Jan 2016 16:20:00 +0200 | From | "Michael S. Tsirkin" <> | Subject | [PATCH v3 25/41] tile: define __smp_xxx |
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This defines __smp_xxx barriers for tile, for use by virtualization.
Some smp_xxx barriers are removed as they are defined correctly by asm-generic/barriers.h
Note: for 32 bit, keep smp_mb__after_atomic around since it's faster than the generic implementation.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> --- arch/tile/include/asm/barrier.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/tile/include/asm/barrier.h b/arch/tile/include/asm/barrier.h index 96a42ae..d552228 100644 --- a/arch/tile/include/asm/barrier.h +++ b/arch/tile/include/asm/barrier.h @@ -79,11 +79,12 @@ mb_incoherent(void) * But after the word is updated, the routine issues an "mf" before returning, * and since it's a function call, we don't even need a compiler barrier. */ -#define smp_mb__before_atomic() smp_mb() -#define smp_mb__after_atomic() do { } while (0) +#define __smp_mb__before_atomic() __smp_mb() +#define __smp_mb__after_atomic() do { } while (0) +#define smp_mb__after_atomic() __smp_mb__after_atomic() #else /* 64 bit */ -#define smp_mb__before_atomic() smp_mb() -#define smp_mb__after_atomic() smp_mb() +#define __smp_mb__before_atomic() __smp_mb() +#define __smp_mb__after_atomic() __smp_mb() #endif #include <asm-generic/barrier.h> -- MST
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