perf test: Fixup error reporting in basic mmap test

In two cases this test could detect an error, bail out but return zero.
Fix it by reporting -1 for failure.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-tjhs9v6nqpofmxv3gs5lnu2c@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/tools/perf/tests/mmap-basic.c b/tools/perf/tests/mmap-basic.c
index e1746811e14b..8682ecfb4f66 100644
--- a/tools/perf/tests/mmap-basic.c
+++ b/tools/perf/tests/mmap-basic.c
@@ -128,6 +128,7 @@ int test__basic_mmap(void)
                         goto out_munmap;
                 }
 
+                err = -1;
                 evsel = perf_evlist__id2evsel(evlist, sample.id);
                 if (evsel == NULL) {
                         pr_debug("event with id %" PRIu64
@@ -137,16 +138,17 @@ int test__basic_mmap(void)
                 nr_events[evsel->idx]++;
         }
 
+        err = 0;
         list_for_each_entry(evsel, &evlist->entries, node) {
                 if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) {
                         pr_debug("expected %d %s events, got %d\n",
                                  expected_nr_events[evsel->idx],
                                  perf_evsel__name(evsel), nr_events[evsel->idx]);
+                        err = -1;
                         goto out_munmap;
                 }
         }
 
-        err = 0;
 out_munmap:
         perf_evlist__munmap(evlist);
 out_close_fd: