diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 8648c6d3003ddb3d64c54142ece0f56b1e30e813..1134de22979e7f18fa9b74d3bd658a9363acdaeb 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -194,12 +194,13 @@ static int process_buildids(struct record *rec)
 {
 	struct perf_data_file *file  = &rec->file;
 	struct perf_session *session = rec->session;
-	u64 start = session->header.data_offset;
 
 	u64 size = lseek(file->fd, 0, SEEK_CUR);
 	if (size == 0)
 		return 0;
 
+	file->size = size;
+
 	/*
 	 * During this process, it'll load kernel map and replace the
 	 * dso->long_name to a real pathname it found.  In this case
@@ -211,9 +212,7 @@ static int process_buildids(struct record *rec)
 	 */
 	symbol_conf.ignore_vmlinux_buildid = true;
 
-	return __perf_session__process_events(session, start,
-					      size - start,
-					      size, &build_id__mark_dso_hit_ops);
+	return perf_session__process_events(session, &build_id__mark_dso_hit_ops);
 }
 
 static void perf_event__synthesize_guest_os(struct machine *machine, void *data)
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index b0ce3d6e623130ccc6d938848f83a8dd4475f1cc..0baf75f12b7c4a663544cb6f65b6c001c3ae890e 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1251,9 +1251,9 @@ fetch_mmaped_event(struct perf_session *session,
 #define NUM_MMAPS 128
 #endif
 
-int __perf_session__process_events(struct perf_session *session,
-				   u64 data_offset, u64 data_size,
-				   u64 file_size, struct perf_tool *tool)
+static int __perf_session__process_events(struct perf_session *session,
+					  u64 data_offset, u64 data_size,
+					  u64 file_size, struct perf_tool *tool)
 {
 	int fd = perf_data_file__fd(session->file);
 	u64 head, page_offset, file_offset, file_pos, size;
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index dc26ebf60fe421050b58eafa9c8fb29d49fa3f0a..6d663dc76404395ad6231fcf93bd881b9978fab8 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -49,9 +49,6 @@ int perf_session__peek_event(struct perf_session *session, off_t file_offset,
 			     union perf_event **event_ptr,
 			     struct perf_sample *sample);
 
-int __perf_session__process_events(struct perf_session *session,
-				   u64 data_offset, u64 data_size, u64 size,
-				   struct perf_tool *tool);
 int perf_session__process_events(struct perf_session *session,
 				 struct perf_tool *tool);