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Commit d39886a7 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

tile: define __smp_xxx 



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: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
parent 45d9b859

arch/tile/include/asm/barrier.h

+5 −4
Original line number Diff line number Diff line
@@ -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>