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[S390] add atomic64_xchg to s390 

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Mathieu Desnoyers 2007-02-21 10:55:59 +01:00 committed by Martin Schwidefsky
parent de61c9341b
commit 3a5f10e370
1 changed files with 2 additions and 0 deletions
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2
include/asm-s390/atomic.h
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@ -215,6 +215,8 @@ static __inline__ void atomic64_set_mask(unsigned long mask, atomic64_t * v)
__CSG_LOOP(v, mask, "ogr");
}
#define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
static __inline__ long long atomic64_cmpxchg(atomic64_t *v,
long long old, long long new)
{