[tip: perf/core] perf test: Report failure for mmap events

[tip-bot2 for Leo Yan]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     6add129c5d9210ada25217abc130df0b7096ee02
Gitweb:        https://git.kernel.org/tip/6add129c5d9210ada25217abc130df0b7096ee02
Author:        Leo Yan <leo.yan@xxxxxxxxxx>
AuthorDate:    Fri, 11 Oct 2019 17:19:41 +08:00
Committer:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitterDate: Tue, 15 Oct 2019 08:36:22 -03:00

perf test: Report failure for mmap events

When fail to mmap events in task exit case, it misses to set 'err' to
-1; thus the testing will not report failure for it.

This patch sets 'err' to -1 when fails to mmap events, thus Perf tool
can report correct result.

Fixes: d723a55096b8 ("perf test: Add test case for checking number of EXIT events")
Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: http://lore.kernel.org/lkml/20191011091942.29841-1-leo.yan@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/tests/task-exit.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c
index 4965f8b..19fa7cb 100644
--- a/tools/perf/tests/task-exit.c
+++ b/tools/perf/tests/task-exit.c
@@ -111,6 +111,7 @@ int test__task_exit(struct test *test __maybe_unused, int subtest __maybe_unused
 	if (evlist__mmap(evlist, 128) < 0) {
 		pr_debug("failed to mmap events: %d (%s)\n", errno,
 			 str_error_r(errno, sbuf, sizeof(sbuf)));
+		err = -1;
 		goto out_delete_evlist;
 	}