debug_info_alloc
new_id = debug_info_alloc("", pages_per_area, nr_areas, id->buf_size,
rc = debug_info_alloc(name, pages_per_area, nr_areas, buf_size, level, ALL_AREAS);
rc = debug_info_alloc(in->name, in->pages_per_area,
copy = debug_info_alloc("", pages_per_area, nr_areas, id->buf_size,