perf test: Report failure for mmap events

BugLink: https://bugs.launchpad.net/bugs/1859712
[ Upstream commit 6add129c5d9210ada25217abc130df0b7096ee02 ]

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@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20191011091942.29841-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c
index 89c8e1604ca73ab277b4cf988d08400c527f315f..94fe5464bc6f37cc1330c82388e963e9423fdb38 100644 (file)
--- a/tools/perf/tests/task-exit.c
+++ b/tools/perf/tests/task-exit.c
@@ -104,6 +104,7 @@ int test__task_exit(struct test *test __maybe_unused, int subtest __maybe_unused
        if (perf_evlist__mmap(evlist, 128, true) < 0) {
                pr_debug("failed to mmap events: %d (%s)\n", errno,
                         str_error_r(errno, sbuf, sizeof(sbuf)));
+               err = -1;
                goto out_delete_evlist;
        }