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selftests: vDSO: vdso_test_abi: Add test for clock_getres_time64()

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Some architectures will start to implement this function.
Make sure it works correctly.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20251223-vdso-compat-time32-v1-4-97ea7a06a543@linutronix.de
This commit is contained in:
Thomas Weißschuh 2025-12-23 07:59:15 +01:00 committed by Thomas Gleixner
parent 1dcd1273ad
commit 4e6a231298
1 changed files with 52 additions and 1 deletions
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53
tools/testing/selftests/vDSO/vdso_test_abi.c
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@ -36,6 +36,7 @@ typedef long (*vdso_gettimeofday_t)(struct timeval *tv, struct timezone *tz);
typedef long (*vdso_clock_gettime_t)(clockid_t clk_id, struct timespec *ts);
typedef long (*vdso_clock_gettime64_t)(clockid_t clk_id, struct vdso_timespec64 *ts);
typedef long (*vdso_clock_getres_t)(clockid_t clk_id, struct timespec *ts);
typedef long (*vdso_clock_getres_time64_t)(clockid_t clk_id, struct vdso_timespec64 *ts);
typedef time_t (*vdso_time_t)(time_t *t);
static const char * const vdso_clock_name[] = {
@ -196,6 +197,55 @@ static void vdso_test_clock_getres(clockid_t clk_id)
}
}
#ifdef __NR_clock_getres_time64
static void vdso_test_clock_getres_time64(clockid_t clk_id)
{
int clock_getres_fail = 0;
/* Find clock_getres. */
vdso_clock_getres_time64_t vdso_clock_getres_time64 =
(vdso_clock_getres_time64_t)vdso_sym(version, name[7]);
if (!vdso_clock_getres_time64) {
ksft_print_msg("Couldn't find %s\n", name[7]);
ksft_test_result_skip("%s %s\n", name[7],
vdso_clock_name[clk_id]);
return;
}
struct vdso_timespec64 ts, sys_ts;
long ret = VDSO_CALL(vdso_clock_getres_time64, 2, clk_id, &ts);
if (ret == 0) {
ksft_print_msg("The vdso resolution is %lld %lld\n",
(long long)ts.tv_sec, (long long)ts.tv_nsec);
} else {
clock_getres_fail++;
}
ret = syscall(__NR_clock_getres_time64, clk_id, &sys_ts);
ksft_print_msg("The syscall resolution is %lld %lld\n",
(long long)sys_ts.tv_sec, (long long)sys_ts.tv_nsec);
if ((sys_ts.tv_sec != ts.tv_sec) || (sys_ts.tv_nsec != ts.tv_nsec))
clock_getres_fail++;
if (clock_getres_fail > 0) {
ksft_test_result_fail("%s %s\n", name[7],
vdso_clock_name[clk_id]);
} else {
ksft_test_result_pass("%s %s\n", name[7],
vdso_clock_name[clk_id]);
}
}
#else /* !__NR_clock_getres_time64 */
static void vdso_test_clock_getres_time64(clockid_t clk_id)
{
ksft_test_result_skip("%s %s\n", name[7], vdso_clock_name[clk_id]);
}
#endif /* __NR_clock_getres_time64 */
/*
* This function calls vdso_test_clock_gettime and vdso_test_clock_getres
* with different values for clock_id.
@ -208,9 +258,10 @@ static inline void vdso_test_clock(clockid_t clock_id)
vdso_test_clock_gettime64(clock_id);
vdso_test_clock_getres(clock_id);
vdso_test_clock_getres_time64(clock_id);
}
#define VDSO_TEST_PLAN 29
#define VDSO_TEST_PLAN 38
int main(int argc, char **argv)
{