}
	nodeConfig := sp.provider.GetNodeConfig()
	rootStats, networkStats, err := sp.provider.GetCgroupStats("/", updateStats)
	if err != nil {
		return nil, fmt.Errorf("failed to get root cgroup stats: %v", err)
	}
	rootFsStats, err := sp.provider.RootFsStats()
	if err != nil {
		return nil, fmt.Errorf("failed to get rootFs stats: %v", err)
	}
	imageFsStats, containerFsStats, err := sp.provider.ImageFsStats(ctx)

  # cgroup v2: enable nesting
  if [ -f /sys/fs/cgroup/cgroup.controllers ]; then
    # move the processes from the root group to the /init group,
    # otherwise writing subtree_control fails with EBUSY.
    # An error during moving non-existent process (i.e., "cat") is ignored.
    mkdir -p /sys/fs/cgroup/init
    xargs -rn1 < /sys/fs/cgroup/cgroup.procs > /sys/fs/cgroup/init/cgroup.procs || :

import spock.lang.Specification

class CGroupMemoryInfoTest extends Specification {
    private static final long MB_IN_BYTES = 1024 * 1024 * 1024

    def "parses memory from cgroup values"() {
        def snapshot = new CGroupMemoryInfo().getOsSnapshotFromCgroup(mbsToBytesAsString(800), mbsToBytesAsString(1024))

        expect:
        snapshot.physicalMemory.total == mbsToBytes(1024)

	Status() Status

	// NewPodContainerManager is a factory method which returns a podContainerManager object
	// Returns a noop implementation if qos cgroup hierarchy is not enabled
	NewPodContainerManager() PodContainerManager

	// GetMountedSubsystems returns the mounted cgroup subsystems on the node
	GetMountedSubsystems() *CgroupSubsystems

	// GetQOSContainersInfo returns the names of top level QoS containers

		statsapi.SystemContainerPods:    {name: sp.provider.GetPodCgroupRoot(), forceStatsUpdate: updateStats},
	}
	for sys, cont := range systemContainers {
		// skip if cgroup name is undefined (not all system containers are required)
		if cont.name == "" {
			continue
		}
		s, _, err := sp.provider.GetCgroupStats(cont.name, cont.forceStatsUpdate)
		if err != nil {

				VolumeStatsAggPeriod:           metav1.Duration{Duration: 60 * time.Second},
				KubeletCgroups:                 "kubelet-cgroup",
				SystemCgroups:                  "system-cgroup",
				CgroupRoot:                     "root-cgroup",
				CgroupsPerQOS:                  utilpointer.Bool(true),
				CgroupDriver:                   "systemd",
				CPUManagerPolicy:               "cpu-manager-policy",

	gzipObjects                 bool
	rootAccess                  bool
	syncEvents                  bool
	objectMaxVersions           int64
}

const (
	cgroupV1MemLimitFile = "/sys/fs/cgroup/memory/memory.limit_in_bytes"
	cgroupV2MemLimitFile = "/sys/fs/cgroup/memory.max"
	cgroupMemNoLimit     = 9223372036854771712
)

func cgroupMemLimit() (limit uint64) {
	buf, err := os.ReadFile(cgroupV2MemLimitFile)
	if err != nil {

limitations under the License.
*/

package cm

import (
	"errors"

	v1 "k8s.io/api/core/v1"
)

type unsupportedCgroupManager struct{}

var errNotSupported = errors.New("Cgroup Manager is not supported in this build")

// Make sure that unsupportedCgroupManager implements the CgroupManager interface
var _ CgroupManager = &unsupportedCgroupManager{}

type CgroupSubsystems struct {

	tls        uint64 // Location of new TLS
	setTID     uint64 // Pointer to a pid_t array (since Linux 5.5)
	setTIDSize uint64 // Number of elements in set_tid (since Linux 5.5)
	cgroup     uint64 // File descriptor for target cgroup of child (since Linux 5.7)
}

// forkAndExecInChild1 implements the body of forkAndExecInChild up to
// the parent's post-fork path. This is a separate function so we can

	fs.StringVar(&c.SystemReservedCgroup, "system-reserved-cgroup", c.SystemReservedCgroup, "Absolute name of the top level cgroup that is used to manage non-kubernetes components for which compute resources...