iowait_starve_clear
iowait_starve_clear(txq->pkts_sent, &txq->wait);
iowait_starve_clear(ps.pkts_sent, &priv->s_iowait);
iowait_starve_clear(submit_count > 0,
iowait_starve_clear(ps.pkts_sent, &priv->s_iowait);
iowait_starve_clear(vnic_sdma->pkts_sent, &vnic_sdma->wait);