mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
7cbf3b13f0
Fix the make W=1 warnings: WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/time/clocksource-wdtest.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/time/test_udelay.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/time/time_test.o Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/r/20240510-time-md-v1-1-44a8a36ac4b0@quicinc.com
101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
// SPDX-License-Identifier: LGPL-2.1+
|
|
|
|
#include <kunit/test.h>
|
|
#include <linux/time.h>
|
|
|
|
/*
|
|
* Traditional implementation of leap year evaluation.
|
|
*/
|
|
static bool is_leap(long year)
|
|
{
|
|
return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
|
|
}
|
|
|
|
/*
|
|
* Gets the last day of a month.
|
|
*/
|
|
static int last_day_of_month(long year, int month)
|
|
{
|
|
if (month == 2)
|
|
return 28 + is_leap(year);
|
|
if (month == 4 || month == 6 || month == 9 || month == 11)
|
|
return 30;
|
|
return 31;
|
|
}
|
|
|
|
/*
|
|
* Advances a date by one day.
|
|
*/
|
|
static void advance_date(long *year, int *month, int *mday, int *yday)
|
|
{
|
|
if (*mday != last_day_of_month(*year, *month)) {
|
|
++*mday;
|
|
++*yday;
|
|
return;
|
|
}
|
|
|
|
*mday = 1;
|
|
if (*month != 12) {
|
|
++*month;
|
|
++*yday;
|
|
return;
|
|
}
|
|
|
|
*month = 1;
|
|
*yday = 0;
|
|
++*year;
|
|
}
|
|
|
|
/*
|
|
* Checks every day in a 160000 years interval centered at 1970-01-01
|
|
* against the expected result.
|
|
*/
|
|
static void time64_to_tm_test_date_range(struct kunit *test)
|
|
{
|
|
/*
|
|
* 80000 years = (80000 / 400) * 400 years
|
|
* = (80000 / 400) * 146097 days
|
|
* = (80000 / 400) * 146097 * 86400 seconds
|
|
*/
|
|
time64_t total_secs = ((time64_t) 80000) / 400 * 146097 * 86400;
|
|
long year = 1970 - 80000;
|
|
int month = 1;
|
|
int mdday = 1;
|
|
int yday = 0;
|
|
|
|
struct tm result;
|
|
time64_t secs;
|
|
s64 days;
|
|
|
|
for (secs = -total_secs; secs <= total_secs; secs += 86400) {
|
|
|
|
time64_to_tm(secs, 0, &result);
|
|
|
|
days = div_s64(secs, 86400);
|
|
|
|
#define FAIL_MSG "%05ld/%02d/%02d (%2d) : %lld", \
|
|
year, month, mdday, yday, days
|
|
|
|
KUNIT_ASSERT_EQ_MSG(test, year - 1900, result.tm_year, FAIL_MSG);
|
|
KUNIT_ASSERT_EQ_MSG(test, month - 1, result.tm_mon, FAIL_MSG);
|
|
KUNIT_ASSERT_EQ_MSG(test, mdday, result.tm_mday, FAIL_MSG);
|
|
KUNIT_ASSERT_EQ_MSG(test, yday, result.tm_yday, FAIL_MSG);
|
|
|
|
advance_date(&year, &month, &mdday, &yday);
|
|
}
|
|
}
|
|
|
|
static struct kunit_case time_test_cases[] = {
|
|
KUNIT_CASE_SLOW(time64_to_tm_test_date_range),
|
|
{}
|
|
};
|
|
|
|
static struct kunit_suite time_test_suite = {
|
|
.name = "time_test_cases",
|
|
.test_cases = time_test_cases,
|
|
};
|
|
|
|
kunit_test_suite(time_test_suite);
|
|
MODULE_DESCRIPTION("time unit test suite");
|
|
MODULE_LICENSE("GPL");
|