113 	sz = readn(fd, &len, sizeof(len));  in do_read_string()
124 	ret = readn(fd, buf, len);  in do_read_string()
975 	ret = readn(fd, &nre, sizeof(nre));  in read_event_desc()
982 	ret = readn(fd, &sz, sizeof(sz));  in read_event_desc()
1010 		ret = readn(fd, buf, sz);  in read_event_desc()
1019 		ret = readn(fd, &nr, sizeof(nr));  in read_event_desc()
1040 			ret = readn(fd, id, sizeof(*id));  in read_event_desc()
1287 		if (readn(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev))  in perf_header__read_build_ids_abi_quirk()
1294 		if (readn(input, filename, len) != len)  in perf_header__read_build_ids_abi_quirk()
1329 		if (readn(input, &bev, sizeof(bev)) != sizeof(bev))  in perf_header__read_build_ids()
1336 		if (readn(input, filename, len) != len)  in perf_header__read_build_ids()
1422 	ret = readn(fd, &nr, sizeof(nr));  in process_nrcpus()
1431 	ret = readn(fd, &nr, sizeof(nr));  in process_nrcpus()
1465 	ret = readn(fd, &mem, sizeof(mem));  in process_total_mem()
1537 	ret = readn(fd, &nr, sizeof(nr));  in process_cmdline()
1573 	ret = readn(fd, &nr, sizeof(nr));  in process_cpu_topology()
1594 	ret = readn(fd, &nr, sizeof(nr));  in process_cpu_topology()
1631 	ret = readn(fd, &nr, sizeof(nr));  in process_numa_topology()
1643 		ret = readn(fd, &node, sizeof(node));  in process_numa_topology()
1647 		ret = readn(fd, &mem_total, sizeof(u64));  in process_numa_topology()
1651 		ret = readn(fd, &mem_free, sizeof(u64));  in process_numa_topology()
1690 	ret = readn(fd, &pmu_num, sizeof(pmu_num));  in process_pmu_mappings()
1706 		if (readn(fd, &type, sizeof(type)) != sizeof(type))  in process_pmu_mappings()
1744 	if (readn(fd, &nr_groups, sizeof(nr_groups)) != sizeof(nr_groups))  in process_group_desc()
1765 		if (readn(fd, &desc[i].leader_idx, sizeof(u32)) != sizeof(u32))  in process_group_desc()
1768 		if (readn(fd, &desc[i].nr_members, sizeof(u32)) != sizeof(u32))  in process_group_desc()
2078 	if (readn(fd, buf, size) <= 0)  in perf_header__getbuffer64()
2250 	ret = readn(fd, header, sizeof(*header));  in perf_file_header__read()
2342 	ret = readn(fd, header, sizeof(*header));  in perf_file_header__read_pipe()
2386 	ret = readn(fd, attr, PERF_ATTR_SIZE_VER0);  in read_attr()
2413 		ret = readn(fd, ptr, left);  in read_attr()
2416 	ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids));  in read_attr()
2722 	if (readn(fd, buf, padding) < 0) {  in perf_event__process_tracing_data()