// the cgroup version for unit tests by assigning a new mocked function into it. Without it,
// the cgroup version would solely depend on the environment running the test.
var isCgroup2UnifiedMode = func() bool {
	return libcontainercgroups.IsCgroup2UnifiedMode()
}

var (
	swapControllerAvailability     bool
	swapControllerAvailabilityOnce sync.Once
)

		return err
	}

	// update the qos level cgrougs v2 settings of memory qos if feature enabled
	if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.MemoryQoS) &&
		libcontainercgroups.IsCgroup2UnifiedMode() {
		m.setMemoryQoS(qosConfigs)
	}

	if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.QOSReserved) {
		for resource, percentReserve := range m.qosReserved {
			switch resource {

	)
	var (
		cpuMountPoint string
		f             features
	)
	mountPoints, err := mountUtil.List()
	if err != nil {
		return f, fmt.Errorf("%s - %v", localErr, err)
	}

	if cgroups.IsCgroup2UnifiedMode() {
		f.cpuHardcapping = true
		return f, nil
	}

	expectedCgroups := sets.New("cpu", "cpuacct", "cpuset", "memory")
	for _, mountPoint := range mountPoints {
		if mountPoint.Type == cgroupMountType {

	}
}

type CgroupVersion string

const (
	cgroupV1 CgroupVersion = "v1"
	cgroupV2 CgroupVersion = "v2"
)

func setCgroupVersionDuringTest(version CgroupVersion) {
	isCgroup2UnifiedMode = func() bool {
		return version == cgroupV2
	}
}

func setSwapControllerAvailableDuringTest(available bool) func() {
	original := swapControllerAvailable
	swapControllerAvailable = func() bool {