From: Gabriel Krisman Bertazi krisman@collabora.com
Add test for wouldblock return when waiting for multiple futexes. Skip the test if it's a x32 application and the kernel returned the approtiaded error, since this ABI is not supported for this operation.
Signed-off-by: Gabriel Krisman Bertazi krisman@collabora.com Co-developed-by: André Almeida andrealmeid@collabora.com Signed-off-by: André Almeida andrealmeid@collabora.com --- .../futex/functional/futex_wait_wouldblock.c | 28 +++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c b/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c index 0ae390ff8164..bcbac042992d 100644 --- a/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c +++ b/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c @@ -12,6 +12,7 @@ * * HISTORY * 2009-Nov-14: Initial version by Gowrishankar gowrishankar.m@in.ibm.com + * 2019-Dec-13: Add WAIT_MULTIPLE test by Krisman krisman@collabora.com * *****************************************************************************/
@@ -40,6 +41,7 @@ int main(int argc, char *argv[]) { struct timespec to = {.tv_sec = 0, .tv_nsec = timeout_ns}; futex_t f1 = FUTEX_INITIALIZER; + struct futex_wait_block fwb = {&f1, f1+1, 0}; int res, ret = RET_PASS; int c;
@@ -61,7 +63,7 @@ int main(int argc, char *argv[]) }
ksft_print_header(); - ksft_set_plan(1); + ksft_set_plan(2); ksft_print_msg("%s: Test the unexpected futex value in FUTEX_WAIT\n", basename(argv[0]));
@@ -71,8 +73,30 @@ int main(int argc, char *argv[]) fail("futex_wait returned: %d %s\n", res ? errno : res, res ? strerror(errno) : ""); ret = RET_FAIL; + } else + ksft_test_result_pass("futex_wait wouldblock succeeds\n"); + + info("Calling futex_wait_multiple on f1: %u @ %p with val=%u\n", + f1, &f1, f1+1); + res = futex_wait_multiple(&fwb, 1, NULL, FUTEX_PRIVATE_FLAG); + +#ifdef __ILP32__ + if (res != -1 || errno != ENOSYS) { + ksft_test_result_fail("futex_wait_multiple returned %d\n", + res < 0 ? errno : res); + ret = RET_FAIL; + } else { + ksft_test_result_skip("futex_wait_multiple not supported at x32\n"); + } +#else + if (!res || errno != EWOULDBLOCK) { + ksft_test_result_fail("futex_wait_multiple returned %d\n", + res < 0 ? errno : res); + ret = RET_FAIL; } + ksft_test_result_pass("futex_wait_multiple wouldblock succeeds\n"); +#endif /* __ILP32__ */
- print_result(TEST_NAME, ret); + ksft_print_cnts(); return ret; }