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time: Ignore interval nanoseconds on tst-itimer

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Running the test on a 4.4 kernel within KVM, the precision used on
ITIMER_VIRTUAL and ITIMER_PROF seems to different than the one used
for ITIMER_REAL (it seems the same used for CLOCK_REALTIME_COARSE and
CLOCK_MONOTONIC_COARSE).  I did not see it on other kernels, for
instance 5.11 and 4.15.

To avoid trying to guess the resolution used, do not check the
nanosecond internal values for the specific timers.

Checked on i686-linux-gnu with a 4.4 kernel.
This commit is contained in:
Adhemerval Zanella 2021-07-12 18:50:22 -03:00
parent 3692c0df7f
commit 958309cba2
1 changed files with 10 additions and 9 deletions
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19
time/tst-itimer.c
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@ -74,7 +74,9 @@ do_test (void)
else
{
TEST_COMPARE (it_old.it_interval.tv_sec, 10);
TEST_COMPARE (it_old.it_interval.tv_usec, 20);
/* Some systems might use a different precision for ITIMER_VIRTUAL
and ITIMER_IPROF and thus the value might be adjusted. To avoid
trying to guess the resolution, we do not check it. */
}
/* Create a periodic timer and check if the return value is the one
@ -88,7 +90,8 @@ do_test (void)
TEST_COMPARE (setitimer (timers[i], &(struct itimerval) { 0 }, &it_old),
0);
TEST_COMPARE (it.it_interval.tv_sec, it_old.it_interval.tv_sec);
TEST_COMPARE (it.it_interval.tv_usec, it_old.it_interval.tv_usec);
if (timers[i] == ITIMER_REAL)
TEST_COMPARE (it.it_interval.tv_usec, it_old.it_interval.tv_usec);
if (sizeof (time_t) == 4)
continue;
@ -114,11 +117,6 @@ do_test (void)
TEST_COMPARE (it_old.it_interval.tv_sec, 0ull);
TEST_COMPARE (it_old.it_interval.tv_usec, 0);
}
else
{
TEST_COMPARE (it_old.it_interval.tv_sec, 0x1ffffffffull);
TEST_COMPARE (it_old.it_interval.tv_usec, 20);
}
}
else
{
@ -139,8 +137,11 @@ do_test (void)
TEST_COMPARE (setitimer (timers[i], &(struct itimerval) { 0 },
&it_old),
0);
TEST_COMPARE (it.it_interval.tv_sec, it_old.it_interval.tv_sec);
TEST_COMPARE (it.it_interval.tv_usec, it_old.it_interval.tv_usec);
if (timers[i] == ITIMER_REAL)
{
TEST_COMPARE (it.it_interval.tv_sec, it_old.it_interval.tv_sec);
TEST_COMPARE (it.it_interval.tv_usec, it_old.it_interval.tv_usec);
}
}
else
{