diff options
Diffstat (limited to 'tools/testing/selftests/kvm/loongarch/arch_timer.c')
| -rw-r--r-- | tools/testing/selftests/kvm/loongarch/arch_timer.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/loongarch/arch_timer.c b/tools/testing/selftests/kvm/loongarch/arch_timer.c index baa30fd296f5..355ecac30954 100644 --- a/tools/testing/selftests/kvm/loongarch/arch_timer.c +++ b/tools/testing/selftests/kvm/loongarch/arch_timer.c @@ -136,10 +136,40 @@ static void guest_test_emulate_timer(uint32_t cpu) local_irq_enable(); } +static void guest_time_count_test(uint32_t cpu) +{ + uint32_t config_iter; + unsigned long start, end, prev, us; + + /* Assuming that test case starts to run in 1 second */ + start = timer_get_cycles(); + us = msec_to_cycles(1000); + __GUEST_ASSERT(start <= us, + "start = 0x%lx, us = 0x%lx.\n", + start, us); + + us = msec_to_cycles(test_args.timer_period_ms); + for (config_iter = 0; config_iter < test_args.nr_iter; config_iter++) { + start = timer_get_cycles(); + end = start + us; + /* test time count growing up always */ + while (start < end) { + prev = start; + start = timer_get_cycles(); + __GUEST_ASSERT(prev <= start, + "prev = 0x%lx, start = 0x%lx.\n", + prev, start); + } + } +} + static void guest_code(void) { uint32_t cpu = guest_get_vcpuid(); + /* must run at first */ + guest_time_count_test(cpu); + timer_irq_enable(); local_irq_enable(); guest_test_period_timer(cpu); |