+void
+kstat_waitq_enter(kstat_io_t *kiop)
+{
+ hrtime_t new, delta;
+ ulong_t wcnt;
+
+ new = gethrtime();
+ delta = new - kiop->wlastupdate;
+ kiop->wlastupdate = new;
+ wcnt = kiop->wcnt++;
+ if (wcnt != 0) {
+ kiop->wlentime += delta * wcnt;
+ kiop->wtime += delta;
+ }
+}
+EXPORT_SYMBOL(kstat_waitq_enter);
+
+void
+kstat_waitq_exit(kstat_io_t *kiop)
+{
+ hrtime_t new, delta;
+ ulong_t wcnt;
+
+ new = gethrtime();
+ delta = new - kiop->wlastupdate;
+ kiop->wlastupdate = new;
+ wcnt = kiop->wcnt--;
+ ASSERT((int)wcnt > 0);
+ kiop->wlentime += delta * wcnt;
+ kiop->wtime += delta;
+}
+EXPORT_SYMBOL(kstat_waitq_exit);
+
+void
+kstat_runq_enter(kstat_io_t *kiop)
+{
+ hrtime_t new, delta;
+ ulong_t rcnt;
+
+ new = gethrtime();
+ delta = new - kiop->rlastupdate;
+ kiop->rlastupdate = new;
+ rcnt = kiop->rcnt++;
+ if (rcnt != 0) {
+ kiop->rlentime += delta * rcnt;
+ kiop->rtime += delta;
+ }
+}
+EXPORT_SYMBOL(kstat_runq_enter);
+
+void
+kstat_runq_exit(kstat_io_t *kiop)
+{
+ hrtime_t new, delta;
+ ulong_t rcnt;
+
+ new = gethrtime();
+ delta = new - kiop->rlastupdate;
+ kiop->rlastupdate = new;
+ rcnt = kiop->rcnt--;
+ ASSERT((int)rcnt > 0);
+ kiop->rlentime += delta * rcnt;
+ kiop->rtime += delta;
+}
+EXPORT_SYMBOL(kstat_runq_exit);
+