func isSupportedQoSComputeResource(name core.ResourceName) bool {
	return supportedQoSComputeResources.Has(string(name))
}

// GetPodQOS returns the QoS class of a pod persisted in the PodStatus.QOSClass field.
// If PodStatus.QOSClass is empty, it returns value of ComputePodQOS() which evaluates pod's QoS class.
func GetPodQOS(pod *core.Pod) core.PodQOSClass {
	if pod.Status.QOSClass != "" {
		return pod.Status.QOSClass
	}
	return ComputePodQOS(pod)

func isSupportedQoSComputeResource(name v1.ResourceName) bool {
	return supportedQoSComputeResources.Has(string(name))
}

// GetPodQOS returns the QoS class of a pod persisted in the PodStatus.QOSClass field.
// If PodStatus.QOSClass is empty, it returns value of ComputePodQOS() which evaluates pod's QoS class.
func GetPodQOS(pod *v1.Pod) v1.PodQOSClass {
	if pod.Status.QOSClass != "" {
		return pod.Status.QOSClass
	}
	return ComputePodQOS(pod)
}

	if types.IsNodeCriticalPod(pod) {
		// Only node critical pod should be the last to get killed.
		return guaranteedOOMScoreAdj
	}

	switch v1qos.GetPodQOS(pod) {
	case v1.PodQOSGuaranteed:
		// Guaranteed containers should be the last to get killed.
		return guaranteedOOMScoreAdj
	case v1.PodQOSBestEffort:
		return besteffortOOMScoreAdj
	}

	pods := m.activePods()
	burstablePodCPURequest := int64(0)
	reuseReqs := make(v1.ResourceList, 4)
	for i := range pods {
		pod := pods[i]
		qosClass := v1qos.GetPodQOS(pod)
		if qosClass != v1.PodQOSBurstable {
			// we only care about the burstable qos tier
			continue
		}
		req := resource.PodRequests(pod, resource.PodResourcesOptions{Reuse: reuseReqs})

	// quota is not capped when cfs quota is disabled
	if !enforceCPULimits {
		cpuQuota = int64(-1)
	}

	// determine the qos class
	qosClass := v1qos.GetPodQOS(pod)

	// build the result
	result := &ResourceConfig{}
	if qosClass == v1.PodQOSGuaranteed {
		result.CPUShares = &cpuShares
		result.CPUQuota = &cpuQuota
		result.CPUPeriod = &cpuPeriod

		// fall back to cluster's default tolerations.
		if ts == nil {
			ts = p.pluginConfig.Default
		}

		extraTolerations = ts
	}

	if qoshelper.GetPodQOS(pod) != api.PodQOSBestEffort {
		extraTolerations = append(extraTolerations, api.Toleration{
			Key:      corev1.TaintNodeMemoryPressure,
			Operator: api.TolerationOpExists,
			Effect:   api.TaintEffectNoSchedule,
		})

	}
	return nil
}

// Allocate call is idempotent
func (p *staticPolicy) Allocate(s state.State, pod *v1.Pod, container *v1.Container) (rerr error) {
	// allocate the memory only for guaranteed pods
	if v1qos.GetPodQOS(pod) != v1.PodQOSGuaranteed {
		return nil
	}

	podUID := string(pod.UID)
	klog.InfoS("Allocate", "pod", klog.KObj(pod), "containerName", container.Name)
	// container belongs in an exclusively allocated pool

func sortPodsByQOS(preemptor *v1.Pod, pods []*v1.Pod) (bestEffort, burstable, guaranteed []*v1.Pod) {
	for _, pod := range pods {
		if kubetypes.Preemptable(preemptor, pod) {
			switch v1qos.GetPodQOS(pod) {
			case v1.PodQOSBestEffort:
				bestEffort = append(bestEffort, pod)
			case v1.PodQOSBurstable:
				burstable = append(burstable, pod)
			case v1.PodQOSGuaranteed:
				guaranteed = append(guaranteed, pod)

}

// GetPodContainerName returns the CgroupName identifier, and its literal cgroupfs form on the host.
func (m *podContainerManagerImpl) GetPodContainerName(pod *v1.Pod) (CgroupName, string) {
	podQOS := v1qos.GetPodQOS(pod)
	// Get the parent QOS container name
	var parentContainer CgroupName
	switch podQOS {
	case v1.PodQOSGuaranteed:
		parentContainer = m.qosContainersInfo.Guaranteed
	case v1.PodQOSBurstable:

	return &swapConfigurationHelper{machineInfo: machineInfo}
}

func (m swapConfigurationHelper) ConfigureLimitedSwap(lcr *runtimeapi.LinuxContainerResources, pod *v1.Pod, container *v1.Container) {
	podQos := kubeapiqos.GetPodQOS(pod)
	containerDoesNotRequestMemory := container.Resources.Requests.Memory().IsZero() && container.Resources.Limits.Memory().IsZero()