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-rw-r--r--tools/perf/util/header.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 44637999dbc1..c6874ecc90b8 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -934,3 +934,55 @@ int event__process_event_type(event_t *self,
return 0;
}
+
+int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
+ int nb_events,
+ event__handler_t process,
+ struct perf_session *session __unused)
+{
+ event_t ev;
+ ssize_t size = 0, aligned_size = 0, padding;
+ int err = 0;
+
+ memset(&ev, 0, sizeof(ev));
+
+ ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
+ size = read_tracing_data_size(fd, pattrs, nb_events);
+ if (size <= 0)
+ return size;
+ aligned_size = ALIGN(size, sizeof(u64));
+ padding = aligned_size - size;
+ ev.tracing_data.header.size = sizeof(ev.tracing_data);
+ ev.tracing_data.size = aligned_size;
+
+ process(&ev, session);
+
+ err = read_tracing_data(fd, pattrs, nb_events);
+ write_padded(fd, NULL, 0, padding);
+
+ return aligned_size;
+}
+
+int event__process_tracing_data(event_t *self,
+ struct perf_session *session)
+{
+ ssize_t size_read, padding, size = self->tracing_data.size;
+ off_t offset = lseek(session->fd, 0, SEEK_CUR);
+ char buf[BUFSIZ];
+
+ /* setup for reading amidst mmap */
+ lseek(session->fd, offset + sizeof(struct tracing_data_event),
+ SEEK_SET);
+
+ size_read = trace_report(session->fd);
+
+ padding = ALIGN(size_read, sizeof(u64)) - size_read;
+
+ if (read(session->fd, buf, padding) < 0)
+ die("reading input file");
+
+ if (size_read + padding != size)
+ die("tracing data size mismatch");
+
+ return size_read + padding;
+}