[PATCH 4/6] perf session: Add data_size to reader object

[Jiri Olsa <jolsa@kernel.org>]

Adding data_size to reader object. Keeping the data_size
variable instead of replacing it with rd.data_size as it
will be used in following patch.

Link: http://lkml.kernel.org/n/tip-5xcux9957yqsljh1cm5ngyqy@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/util/session.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 06379cc87f59..9f29ed743425 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1822,17 +1822,19 @@ fetch_mmaped_event(struct perf_session *session,
 
 struct reader {
 	int	fd;
+	u64	data_size;
 };
 
 static int __perf_session__process_events(struct perf_session *session)
 {
 	struct reader rd = {
 		.fd		= perf_data__fd(session->data),
+		.data_size	= session->header.data_size,
 	};
 	struct ordered_events *oe = &session->ordered_events;
 	struct perf_tool *tool = session->tool;
 	u64 data_offset = session->header.data_offset;
-	u64 data_size = session->header.data_size;
+	u64 data_size = rd.data_size;
 	u64 head, page_offset, file_offset, file_pos, size;
 	int err, mmap_prot, mmap_flags, map_idx = 0;
 	size_t	mmap_size;
-- 
2.17.2