sclp_trace
sclp_trace(prio, id, a, b, err);
sclp_trace(prio, id, a, b, err);
sclp_trace(prio, id, __pa(sccb), summary.b, err);
sclp_trace(prio, id, a, b, false);
sclp_trace(2, "TMO", force_restart, 0, true);
sclp_trace(0, "SRV2", -rc, ++srvc_count, rc != 0);
sclp_trace(2, "RQAD", __pa(req->sccb), _RET_IP_, false);
sclp_trace(0, "UNEX", finished_sccb, 0, true);
sclp_trace(4, "SYN1", sclp_running_state, ++sync_count, false);
sclp_trace(4, "SYN2", sclp_running_state, sync_count, false);
sclp_trace(2, "STCG", 0, (u64)reg->state_change_fn,