return cmutil.GetPids(filepath.Join("/", cgroupName))
}

// Writes 'value' to /proc/<pid>/oom_score_adj. PID = 0 means self
// Returns os.ErrNotExist if the `pid` does not exist.
func applyOOMScoreAdj(pid int, oomScoreAdj int) error {
	if pid < 0 {
		return fmt.Errorf("invalid PID %d specified for oom_score_adj", pid)
	}

	var pidStr string
	if pid == 0 {
		pidStr = "self"
	} else {
		pidStr = strconv.Itoa(pid)

			highOOMScoreAdj: -997,
		},
	}
	for _, test := range oomTests {
		oomScoreAdj := GetContainerOOMScoreAdjust(test.pod, &test.pod.Spec.Containers[0], test.memoryCapacity)
		if oomScoreAdj < test.lowOOMScoreAdj || oomScoreAdj > test.highOOMScoreAdj {
			t.Errorf("oom_score_adj should be between %d and %d, but was %d", test.lowOOMScoreAdj, test.highOOMScoreAdj, oomScoreAdj)
		}
	}

	klog.V(5).InfoS("Attempting to apply oom_score_adj to process", "oomScoreAdj", oomScoreAdj, "pid", pid)
	if err := oomAdjuster.ApplyOOMScoreAdj(pid, oomScoreAdj); err != nil {
		klog.V(3).InfoS("Failed to apply oom_score_adj to process", "oomScoreAdj", oomScoreAdj, "pid", pid, "err", err)
		errs = append(errs, fmt.Errorf("failed to apply oom score %d to PID %d: %v", oomScoreAdj, pid, err))
	}
	return utilerrors.NewAggregate(errs)
}

		ApplyOOMScoreAdj:          fakeApplyOOMScoreAdj,
		ApplyOOMScoreAdjContainer: fakeApplyOOMScoreAdjContainer,
	}
}

func fakeApplyOOMScoreAdj(pid int, oomScoreAdj int) error {
	return nil
}

func fakeApplyOOMScoreAdjContainer(cgroupName string, oomScoreAdj, maxTries int) error {
	return nil

- Updated kubelet CLI summary documentation and generated webpage ([#73256](https://github.com/kubernetes/kubernetes/pull/73256), [@deitch](https://github.com/deitch))
- Set a low `oom_score_adj` for containers in pods with system-critical priorities ([#73758](https://github.com/kubernetes/kubernetes/pull/73758), [@sjenning](https://github.com/sjenning))

		ApplyOOMScoreAdjContainer: unsupportedApplyOOMScoreAdjContainer,
	}
}

func unsupportedApplyOOMScoreAdj(pid int, oomScoreAdj int) error {
	return unsupportedErr
}

func unsupportedApplyOOMScoreAdjContainer(cgroupName string, oomScoreAdj, maxTries int) error {
	return unsupportedErr

type OOMAdjuster struct {
	pidLister                 func(cgroupName string) ([]int, error)
	ApplyOOMScoreAdj          func(pid int, oomScoreAdj int) error
	ApplyOOMScoreAdjContainer func(cgroupName string, oomScoreAdj, maxTries int) error

* Admit critical pods in the kubelet ([#38836](https://github.com/kubernetes/kubernetes/pull/38836), [@bprashanth](https://github.com/bprashanth))
* assign -998 as the oom_score_adj for critical pods (e.g. kube-proxy) ([#39114](https://github.com/kubernetes/kubernetes/pull/39114), [@dchen1107](https://github.com/dchen1107))

* Admit critical pods in the kubelet ([#38836](https://github.com/kubernetes/kubernetes/pull/38836), [@bprashanth](https://github.com/bprashanth))
* assign -998 as the oom_score_adj for critical pods (e.g. kube-proxy) ([#39114](https://github.com/kubernetes/kubernetes/pull/39114), [@dchen1107](https://github.com/dchen1107))

			[]v1.ContainerStatus{},
			&runtimeapi.LinuxContainerResources{CpuShares: 256, MemoryLimitInBytes: 786432000, OomScoreAdj: 970},
		},
		{
			"best-effort qos - no container status",
			true,
			nil,
			nil,
			[]v1.ContainerStatus{},
			&runtimeapi.LinuxContainerResources{CpuShares: 2, OomScoreAdj: 1000},
		},
		{
			"requests & limits, cpu & memory, guaranteed qos - empty resources container status",
			true,