scripts/atomic/fallbacks/try_cmpxchg

   1 cat <<EOF
   2         ${int} r, o = *old;
   3         r = raw_${atomic}_cmpxchg${order}(v, o, new);
   4         if (unlikely(r != o))
   5                 *old = r;
   6         return likely(r == o);
   7 EOF