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add rcu_cmpxchg_pointer
[userspace-rcu.git]
/
urcu-qsbr.c
diff --git
a/urcu-qsbr.c
b/urcu-qsbr.c
index f681c05bf0c05d96860e06cbb8771b11c9e3e829..5c6eaa014721267da7de5f85fff22835d41a80b2 100644
(file)
--- a/
urcu-qsbr.c
+++ b/
urcu-qsbr.c
@@
-255,6
+255,12
@@
void *rcu_assign_pointer_sym(void **p, void *v)
return STORE_SHARED(p, v);
}
return STORE_SHARED(p, v);
}
+void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new)
+{
+ wmb();
+ return cmpxchg(p, old, _new);
+}
+
void *rcu_xchg_pointer_sym(void **p, void *v)
{
wmb();
void *rcu_xchg_pointer_sym(void **p, void *v)
{
wmb();
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