perf session: Add 'data_size' member to reader object

Add a  'data_size' member to the reader object. Keep the 'data_size'
variable instead of replacing it with rd.data_size as it will be used in
the following patch.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190110101301.6196-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 06379cc87f5909056190011fa3883f25df3fdcc8..9f29ed743425efbe9e5e863ea37c4203d38e12f1 100644 (file)
--- 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;