diff options
| author |   Vitaly Kuznetsov <vkuznets@redhat.com> | 2024-01-09 15:11:18 +0100 |
|---|---|---|
| committer |   Sean Christopherson <seanjc@google.com> | 2024-02-01 08:58:13 -0800 |
| commit | 410cb01ead5bcec500c0654f361d620553f930aa (patch) | |
| tree | 0545d67f6dccbd6016740b4157e4601227f0500b /tools/testing/selftests/kvm | |
| parent | KVM: selftests: Generalize check_clocksource() from kvm_clock_test (diff) | |
| download | wireguard-linux-410cb01ead5bcec500c0654f361d620553f930aa.tar.xz wireguard-linux-410cb01ead5bcec500c0654f361d620553f930aa.zip | |
KVM: selftests: Use generic sys_clocksource_is_tsc() in vmx_nested_tsc_scaling_test
Despite its name, system_has_stable_tsc() just checks that system
clocksource is 'tsc'; this can now be done with generic
sys_clocksource_is_tsc().
No functional change intended.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20240109141121.1619463-3-vkuznets@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/testing/selftests/kvm')
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c index e710b6e7fb38..93b0a850a240 100644 --- a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c +++ b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c @@ -116,23 +116,6 @@ static void l1_guest_code(struct vmx_pages *vmx_pages) GUEST_DONE(); } -static bool system_has_stable_tsc(void) -{ - bool tsc_is_stable; - FILE *fp; - char buf[4]; - - fp = fopen("/sys/devices/system/clocksource/clocksource0/current_clocksource", "r"); - if (fp == NULL) - return false; - - tsc_is_stable = fgets(buf, sizeof(buf), fp) && - !strncmp(buf, "tsc", sizeof(buf)); - - fclose(fp); - return tsc_is_stable; -} - int main(int argc, char *argv[]) { struct kvm_vcpu *vcpu; @@ -148,7 +131,7 @@ int main(int argc, char *argv[]) TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_VMX)); TEST_REQUIRE(kvm_has_cap(KVM_CAP_TSC_CONTROL)); - TEST_REQUIRE(system_has_stable_tsc()); + TEST_REQUIRE(sys_clocksource_is_tsc()); /* * We set L1's scale factor to be a random number from 2 to 10. |