#if USE_CMPXCHG_LOCKREF
-/*
- * Allow weakly-ordered memory architectures to provide barrier-less
- * cmpxchg semantics for lockref updates.
- */
-#ifndef cmpxchg64_relaxed
-# define cmpxchg64_relaxed cmpxchg64
-#endif
-
/*
* Note that the "cmpxchg()" reloads the "old" value for the
* failure case.