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@xxxxxxxxxx> --- .../kvm/x86_64/vmx_nested_tsc_scaling_test.c | 19 +------------------ 1 file changed, 1 insertion(+), 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. -- 2.43.0