Extend the test to also cover the time() function.
Signed-off-by: Thomas Weißschuh thomas.weissschuh@linutronix.de --- .../testing/selftests/vDSO/vdso_test_correctness.c | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+)
diff --git a/tools/testing/selftests/vDSO/vdso_test_correctness.c b/tools/testing/selftests/vDSO/vdso_test_correctness.c index 310688e1379511e2c564b460c6379cc00b7a5f9a..67cb8f11aa3c6977616def286b9a7d35fa6579e7 100644 --- a/tools/testing/selftests/vDSO/vdso_test_correctness.c +++ b/tools/testing/selftests/vDSO/vdso_test_correctness.c @@ -40,6 +40,7 @@ int nerrs = 0; vdso_clock_gettime_t vdso_clock_gettime; vdso_clock_gettime64_t vdso_clock_gettime64; vdso_gettimeofday_t vdso_gettimeofday; +vdso_time_t vdso_time;
typedef long (*getcpu_t)(unsigned *, unsigned *, void *);
@@ -119,6 +120,10 @@ static void fill_function_pointers(void) if (!vdso_gettimeofday) printf("Warning: failed to find gettimeofday in vDSO\n");
+ vdso_time = (vdso_time_t)vdso_sym(version, name[2]); + if (!vdso_time) + printf("Warning: failed to find time in vDSO\n"); + }
static long sys_getcpu(unsigned * cpu, unsigned * node, @@ -391,6 +396,49 @@ static void test_gettimeofday(void) VDSO_CALL(vdso_gettimeofday, 2, &vdso, NULL); }
+static void test_time(void) +{ + __kernel_old_time_t start, end, vdso_ret, vdso_param; + + if (!vdso_time) + return; + + printf("[RUN]\tTesting time...\n"); + + if (sys_time(&start) < 0) { + printf("[FAIL]\tsys_time failed (%d)\n", errno); + nerrs++; + return; + } + + vdso_ret = VDSO_CALL(vdso_time, 1, &vdso_param); + end = sys_time(NULL); + + if (vdso_ret < 0 || end < 0) { + printf("[FAIL]\tvDSO returned %d, syscall errno=%d\n", + (int)vdso_ret, errno); + nerrs++; + return; + } + + printf("\t%lld %lld %lld\n", + (long long)start, + (long long)vdso_ret, + (long long)end); + + if (vdso_ret != vdso_param) { + printf("[FAIL]\tinconsistent return values: %lld %lld\n", + (long long)vdso_ret, (long long)vdso_param); + nerrs++; + return; + } + + if (!(start <= vdso_ret) || !(vdso_ret <= end)) { + printf("[FAIL]\tTimes are out of sequence\n"); + nerrs++; + } +} + int main(int argc, char **argv) { version = versions[VDSO_VERSION]; @@ -401,6 +449,7 @@ int main(int argc, char **argv) test_clock_gettime(); test_clock_gettime64(); test_gettimeofday(); + test_time();
/* * Test getcpu() last so that, if something goes wrong setting affinity,