perf synthetic-events: Avoid unnecessary memset

Make sure the memset of a synthesized event only zeros the necessary
tracing data part of the event, as a full event can be over 4kb in
size.

Signed-off-by: Ian Rogers <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Anne Macedo <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Casey Chen <[email protected]>
Cc: Chaitanya S Prakash <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dominique Martinet <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Sun Haiyong <[email protected]>
Cc: Weilin Wang <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Yunseong Kim <[email protected]>
Cc: Ze Gao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/perf/util/synthetic-events.c b/tools/perf/util/synthetic-events.c
index 7f884d70de81..0a7f93ae76fb 100644
--- a/tools/perf/util/synthetic-events.c
+++ b/tools/perf/util/synthetic-events.c
@@ -2200,7 +2200,7 @@ int perf_event__synthesize_tracing_data(const struct perf_tool *tool, int fd, st
 	if (!tdata)
 		return -1;
 
-	memset(&ev, 0, sizeof(ev));
+	memset(&ev, 0, sizeof(ev.tracing_data));
 
 	ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
 	size = tdata->size;