From: Jinrong Liang cloudliang@tencent.com
Add a test to ensure that setting both generic and fixed performance event filters does not affect the consistency of the fixed performance filter behavior in KVM. This test helps to ensure that the fixed performance filter works as expected even when generic performance event filters are also set.
Signed-off-by: Jinrong Liang cloudliang@tencent.com --- .../selftests/kvm/x86_64/pmu_event_filter_test.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c index 0f54c53d7fff..9be4c6f8fb7e 100644 --- a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c +++ b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c @@ -889,6 +889,7 @@ static void test_fixed_ctr_action_and_bitmap(struct kvm_vcpu *vcpu, uint32_t bitmap; uint64_t count; bool expected; + struct kvm_pmu_event_filter *f;
/* * Check the fixed performance counter can count normally works when @@ -902,6 +903,19 @@ static void test_fixed_ctr_action_and_bitmap(struct kvm_vcpu *vcpu, expected = fixed_ctr_is_allowed(fixed_ctr_idx, actions[i], bitmap); count = test_fixed_ctr_with_filter(vcpu, actions[i], bitmap);
+ TEST_ASSERT(expected == !!count, + "Fixed event filter does not work as expected."); + + /* + * Check that setting both events[] and fixed_counter_bitmap + * does not affect the consistency of the fixed ctrs' behaviour. + * + * Note, the fixed_counter_bitmap rule has high priority. + */ + f = event_filter(actions[i]); + f->fixed_counter_bitmap = bitmap; + count = test_with_filter(vcpu, f); + TEST_ASSERT(expected == !!count, "Fixed event filter does not work as expected."); }