OP_EPOLL_ADD
case OP_EPOLL_ADD:
do_epoll_op(w, OP_EPOLL_ADD, w->fdmap[i]);
avg[OP_EPOLL_ADD], rel_stddev_stats(stddev[OP_EPOLL_ADD],
avg[OP_EPOLL_ADD]));
t[OP_EPOLL_ADD], t[OP_EPOLL_MOD], t[OP_EPOLL_DEL]);
t[OP_EPOLL_ADD], t[OP_EPOLL_MOD], t[OP_EPOLL_DEL]);