devinfo_audit_node_walk_data_t
devinfo_audit_node_walk_data_t *dih;
dih = mdb_zalloc(sizeof (devinfo_audit_node_walk_data_t), UM_SLEEP);
devinfo_audit_node_walk_data_t *dih = wsp->walk_data;
mdb_free(wsp->walk_data, sizeof (devinfo_audit_node_walk_data_t));