dt_node_list_cook
attr = dt_node_list_cook(pargp, DT_IDFLG_REF);
dt_node_list_cook(&dnp->dn_acts, idflags));
dt_node_list_cook(&dnp->dn_acts, idflags));
extern dtrace_attribute_t dt_node_list_cook(dt_node_t **, uint_t);