scripts/atomic/fallbacks/try_cmpxchg

   1 cat <<EOF
   2 static inline bool
   3 ${atomic}_try_cmpxchg${order}(${atomic}_t *v, ${int} *old, ${int} new)
   4 {
   5         ${int} r, o = *old;
   6         r = ${atomic}_cmpxchg${order}(v, o, new);
   7         if (unlikely(r != o))
   8                 *old = r;
   9         return likely(r == o);
  10 }
  11 EOF