Commit 03e3b5a0 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky

[S390] atomic: use ACCESS_ONCE() for atomic_read()

Let's make atomic_read() and atomic_set() behave like on all/most other
architectures. Generated code is identical with gcc 4.5.2.
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 5da24b76
......@@ -36,14 +36,12 @@
static inline int atomic_read(const atomic_t *v)
{
barrier();
return v->counter;
return ACCESS_ONCE(v->counter);
}
static inline void atomic_set(atomic_t *v, int i)
{
v->counter = i;
barrier();
}
static inline int atomic_add_return(int i, atomic_t *v)
......@@ -128,14 +126,12 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
static inline long long atomic64_read(const atomic64_t *v)
{
barrier();
return v->counter;
return ACCESS_ONCE(v->counter);
}
static inline void atomic64_set(atomic64_t *v, long long i)
{
v->counter = i;
barrier();
}
static inline long long atomic64_add_return(long long i, atomic64_t *v)
......
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