diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/map_kptr.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/map_kptr.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/map_kptr.c b/tools/testing/selftests/bpf/prog_tests/map_kptr.c index 8743df599567..f372162c0280 100644 --- a/tools/testing/selftests/bpf/prog_tests/map_kptr.c +++ b/tools/testing/selftests/bpf/prog_tests/map_kptr.c @@ -131,6 +131,25 @@ static int kern_sync_rcu_tasks_trace(struct rcu_tasks_trace_gp *rcu) return 0; } +static void wait_for_map_release(void) +{ + LIBBPF_OPTS(bpf_test_run_opts, lopts); + struct map_kptr *skel; + int ret; + + skel = map_kptr__open_and_load(); + if (!ASSERT_OK_PTR(skel, "map_kptr__open_and_load")) + return; + + do { + ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.count_ref), &lopts); + ASSERT_OK(ret, "count_ref ret"); + ASSERT_OK(lopts.retval, "count_ref retval"); + } while (skel->bss->num_of_refs != 2); + + map_kptr__destroy(skel); +} + void serial_test_map_kptr(void) { struct rcu_tasks_trace_gp *skel; @@ -148,11 +167,15 @@ void serial_test_map_kptr(void) ASSERT_OK(kern_sync_rcu_tasks_trace(skel), "sync rcu_tasks_trace"); ASSERT_OK(kern_sync_rcu(), "sync rcu"); + wait_for_map_release(); + /* Observe refcount dropping to 1 on bpf_map_free_deferred */ test_map_kptr_success(false); ASSERT_OK(kern_sync_rcu_tasks_trace(skel), "sync rcu_tasks_trace"); ASSERT_OK(kern_sync_rcu(), "sync rcu"); + wait_for_map_release(); + /* Observe refcount dropping to 1 on synchronous delete elem */ test_map_kptr_success(true); } |