runq_sw_apply
static inline uintptr_t runq_sw_apply(struct runq *rq, int idx,
(void)runq_sw_apply(rq, idx, &runq_sw_set_not_empty_op);
(void)runq_sw_apply(rq, idx, &runq_sw_set_empty_op);
return (runq_sw_apply(rq, idx, &runq_sw_is_empty_op));