MDB_DBG_PSVC
rd_logp((bits & MDB_DBG_PSVC) != 0);
{ "psvc", "debug proc_service clients", MDB_DBG_PSVC },
mdb_dvprintf(MDB_DBG_PSVC, format, alist);
mdb_dprintf(MDB_DBG_PSVC, "failing call to pshandle %p\n", (void *)P);