[PATCH AUTOSEL 5.7 262/388] selftests/timens: handle a case when alarm clocks are not supported

Sasha Levin
2020-06-18T01:15:35Z

From: Andrei Vagin <avagin@gmail.com>

[ Upstream commit 558ae0355a91c7d28fdf4c0011bee6ebb5118632 ]

This can happen if a testing node doesn't have RTC (real time clock)
hardware or it doesn't support alarms.

Fixes: 61c57676035d ("selftests/timens: Add Time Namespace test for supported clocks")
Acked-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reported-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/timens/clock_nanosleep.c | 2 +-
tools/testing/selftests/timens/timens.c | 2 +-
tools/testing/selftests/timens/timens.h | 13 ++++++++++++-
tools/testing/selftests/timens/timer.c | 5 +++++
tools/testing/selftests/timens/timerfd.c | 5 +++++
5 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/timens/clock_nanosleep.c b/tools/testing/selftests/timens/clock_nanosleep.c
index 8e7b7c72ef65..72d41b955fb2 100644
--- a/tools/testing/selftests/timens/clock_nanosleep.c
+++ b/tools/testing/selftests/timens/clock_nanosleep.c
@@ -119,7 +119,7 @@ int main(int argc, char *argv[])

ksft_set_plan(4);

- check_config_posix_timers();
+ check_supported_timers();

if (unshare_timens())
return 1;
diff --git a/tools/testing/selftests/timens/timens.c b/tools/testing/selftests/timens/timens.c
index 098be7c83be3..52b6a1185f52 100644
--- a/tools/testing/selftests/timens/timens.c
+++ b/tools/testing/selftests/timens/timens.c
@@ -155,7 +155,7 @@ int main(int argc, char *argv[])

nscheck();

- check_config_posix_timers();
+ check_supported_timers();

ksft_set_plan(ARRAY_SIZE(clocks) * 2);

diff --git a/tools/testing/selftests/timens/timens.h b/tools/testing/selftests/timens/timens.h
index e09e7e39bc52..d4fc52d47146 100644
--- a/tools/testing/selftests/timens/timens.h
+++ b/tools/testing/selftests/timens/timens.h
@@ -14,15 +14,26 @@
#endif

static int config_posix_timers = true;
+static int config_alarm_timers = true;

-static inline void check_config_posix_timers(void)
+static inline void check_supported_timers(void)
{
+ struct timespec ts;
+
if (timer_create(-1, 0, 0) == -1 && errno == ENOSYS)
config_posix_timers = false;
+
+ if (clock_gettime(CLOCK_BOOTTIME_ALARM, &ts) == -1 && errno == EINVAL)
+ config_alarm_timers = false;
}

static inline bool check_skip(int clockid)
{
+ if (!config_alarm_timers && clockid == CLOCK_BOOTTIME_ALARM) {
+ ksft_test_result_skip("CLOCK_BOOTTIME_ALARM isn't supported\n");
+ return true;
+ }
+
if (config_posix_timers)
return false;

diff --git a/tools/testing/selftests/timens/timer.c b/tools/testing/selftests/timens/timer.c
index 96dba11ebe44..5e7f0051bd7b 100644
--- a/tools/testing/selftests/timens/timer.c
+++ b/tools/testing/selftests/timens/timer.c
@@ -22,6 +22,9 @@ int run_test(int clockid, struct timespec now)
timer_t fd;
int i;

+ if (check_skip(clockid))
+ return 0;
+
for (i = 0; i < 2; i++) {
struct sigevent sevp = {.sigev_notify = SIGEV_NONE};
int flags = 0;
@@ -74,6 +77,8 @@ int main(int argc, char *argv[])

nscheck();

+ check_supported_timers();
+
ksft_set_plan(3);

clock_gettime(CLOCK_MONOTONIC, &mtime_now);
diff --git a/tools/testing/selftests/timens/timerfd.c b/tools/testing/selftests/timens/timerfd.c
index eff1ec5ff215..9edd43d6b2c1 100644
--- a/tools/testing/selftests/timens/timerfd.c
+++ b/tools/testing/selftests/timens/timerfd.c
@@ -28,6 +28,9 @@ int run_test(int clockid, struct timespec now)
long long elapsed;
int fd, i;

+ if (check_skip(clockid))
+ return 0;
+
if (tclock_gettime(clockid, &now))
return pr_perror("clock_gettime(%d)", clockid);

@@ -81,6 +84,8 @@ int main(int argc, char *argv[])

nscheck();

+ check_supported_timers();
+
ksft_set_plan(3);

clock_gettime(CLOCK_MONOTONIC, &mtime_now);
--
2.25.1