[PATCH v2 20/22] selftests: futex: Test sys_futex_waitv() timeout

From: André Almeida
Date: Thu Sep 23 2021 - 13:13:23 EST


Test if the futex_waitv timeout is working as expected, using the
supported clockid options.

Signed-off-by: André Almeida <andrealmeid@xxxxxxxxxxxxx>
---
.../futex/functional/futex_wait_timeout.c | 21 ++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/futex/functional/futex_wait_timeout.c b/tools/testing/selftests/futex/functional/futex_wait_timeout.c
index 1f8f6daaf1e7..3651ce17beeb 100644
--- a/tools/testing/selftests/futex/functional/futex_wait_timeout.c
+++ b/tools/testing/selftests/futex/functional/futex_wait_timeout.c
@@ -17,6 +17,7 @@

#include <pthread.h>
#include "futextest.h"
+#include "futex2test.h"
#include "logging.h"

#define TEST_NAME "futex-wait-timeout"
@@ -96,6 +97,12 @@ int main(int argc, char *argv[])
struct timespec to;
pthread_t thread;
int c;
+ struct futex_waitv waitv = {
+ .uaddr = (uintptr_t)&f1,
+ .val = f1,
+ .flags = FUTEX_32,
+ .__reserved = 0
+ };

while ((c = getopt(argc, argv, "cht:v:")) != -1) {
switch (c) {
@@ -118,7 +125,7 @@ int main(int argc, char *argv[])
}

ksft_print_header();
- ksft_set_plan(7);
+ ksft_set_plan(9);
ksft_print_msg("%s: Block on a futex and wait for timeout\n",
basename(argv[0]));
ksft_print_msg("\tArguments: timeout=%ldns\n", timeout_ns);
@@ -175,6 +182,18 @@ int main(int argc, char *argv[])
res = futex_lock_pi(&futex_pi, NULL, 0, FUTEX_CLOCK_REALTIME);
test_timeout(res, &ret, "futex_lock_pi invalid timeout flag", ENOSYS);

+ /* futex_waitv with CLOCK_MONOTONIC */
+ if (futex_get_abs_timeout(CLOCK_MONOTONIC, &to, timeout_ns))
+ return RET_FAIL;
+ res = futex_waitv(&waitv, 1, 0, &to, CLOCK_MONOTONIC);
+ test_timeout(res, &ret, "futex_waitv monotonic", ETIMEDOUT);
+
+ /* futex_waitv with CLOCK_REALTIME */
+ if (futex_get_abs_timeout(CLOCK_REALTIME, &to, timeout_ns))
+ return RET_FAIL;
+ res = futex_waitv(&waitv, 1, 0, &to, CLOCK_REALTIME);
+ test_timeout(res, &ret, "futex_waitv realtime", ETIMEDOUT);
+
ksft_print_cnts();
return ret;
}
--
2.33.0