On Tue, Aug 30, 2022 at 4:14 PM Maciej Fijalkowski
<maciej.fijalkowski@xxxxxxxxx> wrote:
>
> For single threaded poll tests call pthread_kill() from main thread so
> that we are sure worker thread has finished its job and it is possible
> to proceed with next test types from test suite. It was observed that on
> some platforms it takes a bit longer for worker thread to exit and next
> test case sees device as busy in this case.
Acked-by: Magnus Karlsson <magnus.karlsson@xxxxxxxxx>
> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
> ---
> tools/testing/selftests/bpf/xskxceiver.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c
> index 4f8a028f5433..8e157c462cd0 100644
> --- a/tools/testing/selftests/bpf/xskxceiver.c
> +++ b/tools/testing/selftests/bpf/xskxceiver.c
> @@ -1345,6 +1345,11 @@ static void testapp_clean_xsk_umem(struct ifobject *ifobj)
> munmap(ifobj->umem->buffer, umem_sz);
> }
>
> +static void handler(int signum)
> +{
> + pthread_exit(NULL);
> +}
> +
> static int testapp_validate_traffic_single_thread(struct test_spec *test, struct ifobject *ifobj,
> enum test_type type)
> {
> @@ -1362,6 +1367,7 @@ static int testapp_validate_traffic_single_thread(struct test_spec *test, struct
> test->ifobj_rx->shared_umem = false;
> test->ifobj_tx->shared_umem = false;
>
> + signal(SIGUSR1, handler);
> /* Spawn thread */
> pthread_create(&t0, NULL, ifobj->func_ptr, test);
>
> @@ -1371,6 +1377,7 @@ static int testapp_validate_traffic_single_thread(struct test_spec *test, struct
> if (pthread_barrier_destroy(&barr))
> exit_with_error(errno);
>
> + pthread_kill(t0, SIGUSR1);
> pthread_join(t0, NULL);
>
> if (test->total_steps == test->current_step || test->fail) {
> --
> 2.34.1
>
