perf_cpu_map__refcnt
WARN_ONCE(refcount_read(perf_cpu_map__refcnt(map)) != 0,
refcount_inc(perf_cpu_map__refcnt(map));
if (refcount_dec_and_test(perf_cpu_map__refcnt(map)))
refcount_read(perf_cpu_map__refcnt(a)) == 1);
TEST_ASSERT_VAL("wrong refcnt", refcount_read(perf_cpu_map__refcnt(map)) == 1);
TEST_ASSERT_VAL("wrong refcnt", refcount_read(perf_cpu_map__refcnt(map)) == 1);