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Subject[PATCH 09/10] atomic.h : Add atomic64_xchg to s390
atomic.h : Add atomic64_xchg to s390

Signed-off-by: Mathieu Desnoyers <>

--- a/include/asm-s390/atomic.h
+++ b/include/asm-s390/atomic.h
@@ -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)
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