func getCgroupSubsystemsV2() (*CgroupSubsystems, error) {
	controllers, err := libcontainercgroups.GetAllSubsystems()
	if err != nil {
		return nil, err
	}

	mounts := []libcontainercgroups.Mount{}
	mountPoints := make(map[string]string, len(controllers))
	for _, controller := range controllers {
		mountPoints[controller] = util.CgroupRoot
		m := libcontainercgroups.Mount{
			Mountpoint: util.CgroupRoot,
			Root:       util.CgroupRoot,

func getCgroupCpuConfig(cgroupPath string) (*ResourceConfig, error) {
	if libcontainercgroups.IsCgroup2UnifiedMode() {
		return getCgroupv2CpuConfig(cgroupPath)
	} else {
		return getCgroupv1CpuConfig(cgroupPath)
	}
}

func getCgroupMemoryConfig(cgroupPath string) (*ResourceConfig, error) {
	memLimitFile := "memory.limit_in_bytes"
	if libcontainercgroups.IsCgroup2UnifiedMode() {
		memLimitFile = "memory.max"
	}

package cm

import (
	"fmt"
	"strconv"
	"strings"
	"sync"
	"time"

	v1 "k8s.io/api/core/v1"
	"k8s.io/klog/v2"

	"k8s.io/apimachinery/pkg/util/wait"

	units "github.com/docker/go-units"
	libcontainercgroups "github.com/opencontainers/runc/libcontainer/cgroups"
	utilfeature "k8s.io/apiserver/pkg/util/feature"

	"k8s.io/kubernetes/pkg/api/v1/resource"
	v1qos "k8s.io/kubernetes/pkg/apis/core/v1/helper/qos"

package kuberuntime

import (
	"errors"
	"fmt"
	"math"
	"os"
	"path/filepath"
	"strconv"
	"sync"
	"time"

	"github.com/containerd/cgroups"
	cadvisorv1 "github.com/google/cadvisor/info/v1"
	libcontainercgroups "github.com/opencontainers/runc/libcontainer/cgroups"

	v1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/api/resource"
	utilfeature "k8s.io/apiserver/pkg/util/feature"
	runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"

import (
	"context"
	"fmt"
	"math"
	"os"
	"reflect"
	"strconv"
	"testing"

	"k8s.io/kubernetes/pkg/kubelet/cm"
	"k8s.io/kubernetes/pkg/kubelet/types"

	"github.com/google/go-cmp/cmp"
	libcontainercgroups "github.com/opencontainers/runc/libcontainer/cgroups"
	"github.com/stretchr/testify/assert"
	v1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/api/resource"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"