dtrace_aggregate_walk
if (dtrace_aggregate_walk(g_dtp, aggwalk, NULL) != 0) {
if (dtrace_aggregate_walk(g_dtp,
(void) dtrace_aggregate_walk(dtp, dt_normalize_agg, &normal);
(void) dtrace_aggregate_walk(dtp,
(void) dtrace_aggregate_walk(dtp,
extern int dtrace_aggregate_walk(dtrace_hdl_t *, dtrace_aggregate_f *, void *);
rc = dtrace_aggregate_walk(jc->dtjj_consumer->dtjc_dtp, dtj_clear, jc);