diff options
| -rw-r--r-- | tools/perf/tests/cpumap.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/perf/tests/cpumap.c b/tools/perf/tests/cpumap.c index f8187a801b8e..5ed7ff072ea3 100644 --- a/tools/perf/tests/cpumap.c +++ b/tools/perf/tests/cpumap.c @@ -167,6 +167,15 @@ static int __test__cpu_map_merge(const char *lhs, const char *rhs, int nr, const cpu_map__snprint(a, buf, sizeof(buf)); TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, expected)); perf_cpu_map__put(b); + + /* + * If 'b' is a superset of 'a', 'a' points to the same map with the + * map 'b'. In this case, the owner 'b' has released the resource above + * but 'a' still keeps the ownership, the reference counter should be 1. + */ + TEST_ASSERT_VAL("unexpected refcnt: bad result", + refcount_read(perf_cpu_map__refcnt(a)) == 1); + perf_cpu_map__put(a); return 0; } |