Merge pull request #14643 from liguangbo/change_Oom_to_OOM

cmd/kube-proxy/app/server.go

@@ -72,7 +72,7 @@ type ProxyServer struct {
 	EndpointsConfig  *proxyconfig.EndpointsConfig
 	EndpointsHandler proxyconfig.EndpointsConfigHandler
 	IptInterface     utiliptables.Interface
-	OomAdjuster      *oom.OomAdjuster
+	OOMAdjuster      *oom.OOMAdjuster
 	Proxier          proxy.ProxyProvider
 	Recorder         record.EventRecorder
 	ServiceConfig    *proxyconfig.ServiceConfig
@@ -114,7 +114,7 @@ func NewProxyConfig() *ProxyServerConfig {
 		BindAddress:        net.ParseIP("0.0.0.0"),
 		HealthzPort:        10249,
 		HealthzBindAddress: net.ParseIP("127.0.0.1"),
-		OOMScoreAdj:        qos.KubeProxyOomScoreAdj,
+		OOMScoreAdj:        qos.KubeProxyOOMScoreAdj,
 		ResourceContainer:  "/kube-proxy",
 		SyncPeriod:         30 * time.Second,
 	}
@@ -126,7 +126,7 @@ func NewProxyServer(
 	endpointsConfig *proxyconfig.EndpointsConfig,
 	endpointsHandler proxyconfig.EndpointsConfigHandler,
 	iptInterface utiliptables.Interface,
-	oomAdjuster *oom.OomAdjuster,
+	oomAdjuster *oom.OOMAdjuster,
 	proxier proxy.ProxyProvider,
 	recorder record.EventRecorder,
 	serviceConfig *proxyconfig.ServiceConfig,
@@ -137,7 +137,7 @@ func NewProxyServer(
 		EndpointsConfig:  endpointsConfig,
 		EndpointsHandler: endpointsHandler,
 		IptInterface:     iptInterface,
-		OomAdjuster:      oomAdjuster,
+		OOMAdjuster:      oomAdjuster,
 		Proxier:          proxier,
 		Recorder:         recorder,
 		ServiceConfig:    serviceConfig,
@@ -162,10 +162,10 @@ func NewProxyServerDefault(config *ProxyServerConfig) (*ProxyServer, error) {
 	}
 
 	// TODO(vmarmol): Use container config for this.
-	var oomAdjuster *oom.OomAdjuster
+	var oomAdjuster *oom.OOMAdjuster
 	if config.OOMScoreAdj != 0 {
-		oomAdjuster := oom.NewOomAdjuster()
-		if err := oomAdjuster.ApplyOomScoreAdj(0, config.OOMScoreAdj); err != nil {
+		oomAdjuster := oom.NewOOMAdjuster()
+		if err := oomAdjuster.ApplyOOMScoreAdj(0, config.OOMScoreAdj); err != nil {
 			glog.V(2).Info(err)
 		}
 	}

cmd/kubelet/app/server.go

@@ -189,7 +189,7 @@ func NewKubeletServer() *KubeletServer {
 		NetworkPluginDir:            "/usr/libexec/kubernetes/kubelet-plugins/net/exec/",
 		NetworkPluginName:           "",
 		NodeStatusUpdateFrequency:   10 * time.Second,
-		OOMScoreAdj:                 qos.KubeletOomScoreAdj,
+		OOMScoreAdj:                 qos.KubeletOOMScoreAdj,
 		PodInfraContainerImage:      dockertools.PodInfraContainerImage,
 		Port:              ports.KubeletPort,
 		ReadOnlyPort:      ports.KubeletReadOnlyPort,
@@ -449,8 +449,8 @@ func (s *KubeletServer) Run(kcfg *KubeletConfig) error {
 	glog.V(2).Infof("Using root directory: %v", s.RootDirectory)
 
 	// TODO(vmarmol): Do this through container config.
-	oomAdjuster := oom.NewOomAdjuster()
-	if err := oomAdjuster.ApplyOomScoreAdj(0, s.OOMScoreAdj); err != nil {
+	oomAdjuster := oom.NewOOMAdjuster()
+	if err := oomAdjuster.ApplyOOMScoreAdj(0, s.OOMScoreAdj); err != nil {
 		glog.Warning(err)
 	}
 

contrib/mesos/pkg/executor/service/service.go

@@ -105,8 +105,8 @@ func (s *KubeletExecutorServer) syncExternalShutdownWatcher() (io.Closer, error)
 func (s *KubeletExecutorServer) Run(hks hyperkube.Interface, _ []string) error {
 	rand.Seed(time.Now().UTC().UnixNano())
 
-	oomAdjuster := oom.NewOomAdjuster()
-	if err := oomAdjuster.ApplyOomScoreAdj(0, s.OOMScoreAdj); err != nil {
+	oomAdjuster := oom.NewOOMAdjuster()
+	if err := oomAdjuster.ApplyOOMScoreAdj(0, s.OOMScoreAdj); err != nil {
 		log.Info(err)
 	}
 

docs/proposals/resource-qos.md

@@ -149,7 +149,7 @@ Container OOM score configuration
   - Hack, because these critical tasks might die if they conflict with guaranteed containers. in the future, we should place all user-pods into a separate cgroup, and set a limit on the memory they can consume.
 
 Setting OOM_SCORE_ADJ for a container
-- Refactor existing ApplyOomScoreAdj to util/oom.go
+- Refactor existing ApplyOOMScoreAdj to util/oom.go
 - To set OOM_SCORE_ADJ of a container, we loop through all processes in the container, and set OOM_SCORE_ADJ
 - We keep looping until the list of processes in the container stabilizes. This is sufficient because child processes inherit OOM_SCORE_ADJ.
 

hack/verify-flags/exceptions.txt

@@ -71,9 +71,9 @@ hack/lib/logging.sh:  local source_file=${BASH_SOURCE[$stack_skip]}
 hack/local-up-cluster.sh:      runtime_config="--runtime-config=${RUNTIME_CONFIG}"
 hack/local-up-cluster.sh:    runtime_config=""
 pkg/cloudprovider/providers/vagrant/vagrant_test.go:		testSaltMinionsResponse = []byte(`{ "return": [{"kubernetes-minion-1": {"kernel": "Linux", "domain": "", "zmqversion": "3.2.4", "kernelrelease": "3.11.10-301.fc20.x86_64", "pythonpath": ["/usr/bin", "/usr/lib64/python27.zip", "/usr/lib64/python2.7", "/usr/lib64/python2.7/plat-linux2", "/usr/lib64/python2.7/lib-tk", "/usr/lib64/python2.7/lib-old", "/usr/lib64/python2.7/lib-dynload", "/usr/lib64/python2.7/site-packages", "/usr/lib/python2.7/site-packages"], "etcd_servers": "10.245.1.2", "ip_interfaces": {"lo": ["127.0.0.1"], "docker0": ["172.17.42.1"], "enp0s8": ["10.245.2.2"], "p2p1": ["10.0.2.15"]}, "shell": "/bin/sh", "mem_total": 491, "saltversioninfo": [2014, 1, 7], "osmajorrelease": ["20"], "node_ip": "10.245.2.2", "id": "kubernetes-minion-1", "osrelease": "20", "ps": "ps -efH", "server_id": 1005530826, "num_cpus": 1, "hwaddr_interfaces": {"lo": "00:00:00:00:00:00", "docker0": "56:84:7a:fe:97:99", "enp0s8": "08:00:27:17:c5:0f", "p2p1": "08:00:27:96:96:e1"}, "virtual": "VirtualBox", "osfullname": "Fedora", "master": "kubernetes-master", "ipv4": ["10.0.2.15", "10.245.2.2", "127.0.0.1", "172.17.42.1"], "ipv6": ["::1", "fe80::a00:27ff:fe17:c50f", "fe80::a00:27ff:fe96:96e1"], "cpu_flags": ["fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", "cx8", "apic", "sep", "mtrr", "pge", "mca", "cmov", "pat", "pse36", "clflush", "mmx", "fxsr", "sse", "sse2", "syscall", "nx", "rdtscp", "lm", "constant_tsc", "rep_good", "nopl", "pni", "monitor", "ssse3", "lahf_lm"], "localhost": "kubernetes-minion-1", "lsb_distrib_id": "Fedora", "fqdn_ip4": ["127.0.0.1"], "fqdn_ip6": [], "nodename": "kubernetes-minion-1", "saltversion": "2014.1.7", "saltpath": "/usr/lib/python2.7/site-packages/salt", "pythonversion": [2, 7, 5, "final", 0], "host": "kubernetes-minion-1", "os_family": "RedHat", "oscodename": "Heisenbug", "defaultencoding": "UTF-8", "osfinger": "Fedora-20", "roles": ["kubernetes-pool"], "num_gpus": 1, "cpu_model": "Intel(R) Core(TM) i7-4600U CPU @ 2.10GHz", "fqdn": "kubernetes-minion-1", "osarch": "x86_64", "cpuarch": "x86_64", "gpus": [{"model": "VirtualBox Graphics Adapter", "vendor": "unknown"}], "path": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin", "os": "Fedora", "defaultlanguage": "en_US"}}]}`)
-pkg/kubelet/qos/memory_policy_test.go:			t.Errorf("oom_score_adj should be between %d and %d, but was %d", test.lowOomScoreAdj, test.highOomScoreAdj, oomScoreAdj)
-pkg/kubelet/qos/memory_policy_test.go:	highOomScoreAdj int // The min oom_score_adj score the container should be assigned.
-pkg/kubelet/qos/memory_policy_test.go:	lowOomScoreAdj  int // The max oom_score_adj score the container should be assigned.
+pkg/kubelet/qos/memory_policy_test.go:			t.Errorf("oom_score_adj should be between %d and %d, but was %d", test.lowOOMScoreAdj, test.highOOMScoreAdj, oomScoreAdj)
+pkg/kubelet/qos/memory_policy_test.go:	highOOMScoreAdj int // The min oom_score_adj score the container should be assigned.
+pkg/kubelet/qos/memory_policy_test.go:	lowOOMScoreAdj  int // The max oom_score_adj score the container should be assigned.
 pkg/util/oom/oom_linux.go:			err = fmt.Errorf("failed to set oom_score_adj to %d: %v", oomScoreAdj, writeErr)
 pkg/util/oom/oom_linux.go:		return fmt.Errorf("invalid PID %d specified for oom_score_adj", pid)
 pkg/util/oom/oom_linux.go:	oomScoreAdjPath := path.Join("/proc", pidStr, "oom_score_adj")

pkg/kubelet/container_manager_linux.go

@@ -283,8 +283,8 @@ func ensureDockerInContainer(cadvisor cadvisor.Interface, oomScoreAdj int, manag
 		}
 
 		// Also apply oom-score-adj to processes
-		oomAdjuster := oom.NewOomAdjuster()
-		if err := oomAdjuster.ApplyOomScoreAdj(pid, oomScoreAdj); err != nil {
+		oomAdjuster := oom.NewOOMAdjuster()
+		if err := oomAdjuster.ApplyOOMScoreAdj(pid, oomScoreAdj); err != nil {
 			errs = append(errs, fmt.Errorf("failed to apply oom score %d to PID %d", oomScoreAdj, pid))
 		}
 	}

pkg/kubelet/dockertools/fake_manager.go

@@ -42,11 +42,11 @@ func NewFakeDockerManager(
 	generator kubecontainer.RunContainerOptionsGenerator,
 	httpClient kubeletTypes.HttpGetter) *DockerManager {
 
-	fakeOomAdjuster := oom.NewFakeOomAdjuster()
+	fakeOOMAdjuster := oom.NewFakeOOMAdjuster()
 	fakeProcFs := procfs.NewFakeProcFs()
 	dm := NewDockerManager(client, recorder, readinessManager, containerRefManager, machineInfo, podInfraContainerImage, qps,
 		burst, containerLogsDir, osInterface, networkPlugin, generator, httpClient, &NativeExecHandler{},
-		fakeOomAdjuster, fakeProcFs, false)
+		fakeOOMAdjuster, fakeProcFs, false)
 	dm.dockerPuller = &FakeDockerPuller{}
 	dm.prober = prober.New(nil, readinessManager, containerRefManager, recorder)
 	return dm

pkg/kubelet/dockertools/manager.go

@@ -131,7 +131,7 @@ type DockerManager struct {
 	execHandler ExecHandler
 
 	// Used to set OOM scores of processes.
-	oomAdjuster *oom.OomAdjuster
+	oomAdjuster *oom.OOMAdjuster
 
 	// Get information from /proc mount.
 	procFs procfs.ProcFsInterface
@@ -155,7 +155,7 @@ func NewDockerManager(
 	generator kubecontainer.RunContainerOptionsGenerator,
 	httpClient kubeletTypes.HttpGetter,
 	execHandler ExecHandler,
-	oomAdjuster *oom.OomAdjuster,
+	oomAdjuster *oom.OOMAdjuster,
 	procFs procfs.ProcFsInterface,
 	cpuCFSQuota bool) *DockerManager {
 	// Work out the location of the Docker runtime, defaulting to /var/lib/docker
@@ -1470,15 +1470,15 @@ func (dm *DockerManager) runContainerInPod(pod *api.Pod, container *api.Containe
 	// whole pod will die.
 	var oomScoreAdj int
 	if container.Name == PodInfraContainerName {
-		oomScoreAdj = qos.PodInfraOomAdj
+		oomScoreAdj = qos.PodInfraOOMAdj
 	} else {
-		oomScoreAdj = qos.GetContainerOomScoreAdjust(container, dm.machineInfo.MemoryCapacity)
+		oomScoreAdj = qos.GetContainerOOMScoreAdjust(container, dm.machineInfo.MemoryCapacity)
 	}
 	cgroupName, err := dm.procFs.GetFullContainerName(containerInfo.State.Pid)
 	if err != nil {
 		return "", err
 	}
-	if err = dm.oomAdjuster.ApplyOomScoreAdjContainer(cgroupName, oomScoreAdj, 5); err != nil {
+	if err = dm.oomAdjuster.ApplyOOMScoreAdjContainer(cgroupName, oomScoreAdj, 5); err != nil {
 		return "", err
 	}
 

pkg/kubelet/kubelet.go

@@ -307,7 +307,7 @@ func NewMainKubelet(
 		return nil, err
 	}
 
-	oomAdjuster := oom.NewOomAdjuster()
+	oomAdjuster := oom.NewOOMAdjuster()
 	procFs := procfs.NewProcFs()
 
 	// Initialize the runtime.

pkg/kubelet/qos/memory_policy.go

@@ -21,9 +21,9 @@ import (
 )
 
 const (
-	PodInfraOomAdj       int = -999
-	KubeletOomScoreAdj   int = -999
-	KubeProxyOomScoreAdj int = -999
+	PodInfraOOMAdj       int = -999
+	KubeletOOMScoreAdj   int = -999
+	KubeProxyOOMScoreAdj int = -999
 )
 
 // isMemoryBestEffort returns true if the container's memory requirements are best-effort.
@@ -42,12 +42,12 @@ func isMemoryGuaranteed(container *api.Container) bool {
 	return (*memoryRequest).Cmp(*memoryLimit) == 0 && memoryRequest.Value() != 0
 }
 
-// GetContainerOomAdjust returns the amount by which the OOM score of all processes in the
+// GetContainerOOMAdjust returns the amount by which the OOM score of all processes in the
 // container should be adjusted. The OOM score of a process is the percentage of memory it consumes
 // multiplied by 100 (barring exceptional cases) + a configurable quantity which is between -1000
 // and 1000. Containers with higher OOM scores are killed if the system runs out of memory.
 // See https://lwn.net/Articles/391222/ for more information.
-func GetContainerOomScoreAdjust(container *api.Container, memoryCapacity int64) int {
+func GetContainerOOMScoreAdjust(container *api.Container, memoryCapacity int64) int {
 	if isMemoryGuaranteed(container) {
 		// Memory guaranteed containers should be the last to get killed.
 		return -999

pkg/kubelet/qos/memory_policy_test.go

@@ -128,60 +128,60 @@ func TestIsMemoryGuaranteed(t *testing.T) {
 type oomTest struct {
 	container       *api.Container
 	memoryCapacity  int64
-	lowOomScoreAdj  int // The max oom_score_adj score the container should be assigned.
-	highOomScoreAdj int // The min oom_score_adj score the container should be assigned.
+	lowOOMScoreAdj  int // The max oom_score_adj score the container should be assigned.
+	highOOMScoreAdj int // The min oom_score_adj score the container should be assigned.
 }
 
-func TestGetContainerOomScoreAdjust(t *testing.T) {
+func TestGetContainerOOMScoreAdjust(t *testing.T) {
 
 	oomTests := []oomTest{
 		{
 			container:       &zeroRequestMemoryBestEffort,
 			memoryCapacity:  4000000000,
-			lowOomScoreAdj:  1000,
-			highOomScoreAdj: 1000,
+			lowOOMScoreAdj:  1000,
+			highOOMScoreAdj: 1000,
 		},
 		{
 			container:       &edgeMemoryBestEffort,
 			memoryCapacity:  8000000000,
-			lowOomScoreAdj:  1000,
-			highOomScoreAdj: 1000,
+			lowOOMScoreAdj:  1000,
+			highOOMScoreAdj: 1000,
 		},
 		{
 			container:       &noRequestMemoryBestEffort,
 			memoryCapacity:  7230457451,
-			lowOomScoreAdj:  1000,
-			highOomScoreAdj: 1000,
+			lowOOMScoreAdj:  1000,
+			highOOMScoreAdj: 1000,
 		},
 		{
 			container:       &noLimitMemoryBestEffort,
 			memoryCapacity:  4000000000,
-			lowOomScoreAdj:  1000,
-			highOomScoreAdj: 1000,
+			lowOOMScoreAdj:  1000,
+			highOOMScoreAdj: 1000,
 		},
 		{
 			container:       &memoryGuaranteed,
 			memoryCapacity:  123456789,
-			lowOomScoreAdj:  -999,
-			highOomScoreAdj: -999,
+			lowOOMScoreAdj:  -999,
+			highOOMScoreAdj: -999,
 		},
 		{
 			container:       &memoryBurstable,
 			memoryCapacity:  standardMemoryAmount,
-			lowOomScoreAdj:  495,
-			highOomScoreAdj: 505,
+			lowOOMScoreAdj:  495,
+			highOOMScoreAdj: 505,
 		},
 		{
 			container:       &memoryBurstableNoLimit,
 			memoryCapacity:  standardMemoryAmount,
-			lowOomScoreAdj:  2,
-			highOomScoreAdj: 2,
+			lowOOMScoreAdj:  2,
+			highOOMScoreAdj: 2,
 		},
 	}
 	for _, test := range oomTests {
-		oomScoreAdj := GetContainerOomScoreAdjust(test.container, 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)
+		oomScoreAdj := GetContainerOOMScoreAdjust(test.container, 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)
 		}
 	}
 }

pkg/util/oom/oom.go

@@ -19,8 +19,8 @@ package oom
 // This is a struct instead of an interface to allow injection of process ID listers and
 // applying OOM score in tests.
 // TODO: make this an interface, and inject a mock ioutil struct for testing.
-type OomAdjuster struct {
+type OOMAdjuster struct {
 	pidLister                 func(cgroupName string) ([]int, error)
-	ApplyOomScoreAdj          func(pid int, oomScoreAdj int) error
-	ApplyOomScoreAdjContainer func(cgroupName string, oomScoreAdj, maxTries int) error
+	ApplyOOMScoreAdj          func(pid int, oomScoreAdj int) error
+	ApplyOOMScoreAdjContainer func(cgroupName string, oomScoreAdj, maxTries int) error
 }

pkg/util/oom/oom_fake.go

@@ -16,19 +16,19 @@ limitations under the License.
 
 package oom
 
-type FakeOomAdjuster struct{}
+type FakeOOMAdjuster struct{}
 
-func NewFakeOomAdjuster() *OomAdjuster {
-	return &OomAdjuster{
-		ApplyOomScoreAdj:          fakeApplyOomScoreAdj,
-		ApplyOomScoreAdjContainer: fakeApplyOomScoreAdjContainer,
+func NewFakeOOMAdjuster() *OOMAdjuster {
+	return &OOMAdjuster{
+		ApplyOOMScoreAdj:          fakeApplyOOMScoreAdj,
+		ApplyOOMScoreAdjContainer: fakeApplyOOMScoreAdjContainer,
 	}
 }
 
-func fakeApplyOomScoreAdj(pid int, oomScoreAdj int) error {
+func fakeApplyOOMScoreAdj(pid int, oomScoreAdj int) error {
 	return nil
 }
 
-func fakeApplyOomScoreAdjContainer(cgroupName string, oomScoreAdj, maxTries int) error {
+func fakeApplyOOMScoreAdjContainer(cgroupName string, oomScoreAdj, maxTries int) error {
 	return nil
 }

pkg/util/oom/oom_linux.go

@@ -29,12 +29,12 @@ import (
 	"github.com/golang/glog"
 )
 
-func NewOomAdjuster() *OomAdjuster {
-	oomAdjuster := &OomAdjuster{
+func NewOOMAdjuster() *OOMAdjuster {
+	oomAdjuster := &OOMAdjuster{
 		pidLister:        getPids,
-		ApplyOomScoreAdj: applyOomScoreAdj,
+		ApplyOOMScoreAdj: applyOOMScoreAdj,
 	}
-	oomAdjuster.ApplyOomScoreAdjContainer = oomAdjuster.applyOomScoreAdjContainer
+	oomAdjuster.ApplyOOMScoreAdjContainer = oomAdjuster.applyOOMScoreAdjContainer
 	return oomAdjuster
 }
 
@@ -48,7 +48,7 @@ func getPids(cgroupName string) ([]int, error) {
 }
 
 // Writes 'value' to /proc/<pid>/oom_score_adj. PID = 0 means self
-func applyOomScoreAdj(pid int, oomScoreAdj int) error {
+func applyOOMScoreAdj(pid int, oomScoreAdj int) error {
 	if pid < 0 {
 		return fmt.Errorf("invalid PID %d specified for oom_score_adj", pid)
 	}
@@ -79,7 +79,7 @@ func applyOomScoreAdj(pid int, oomScoreAdj int) error {
 
 // Writes 'value' to /proc/<pid>/oom_score_adj for all processes in cgroup cgroupName.
 // Keeps trying to write until the process list of the cgroup stabilizes, or until maxTries tries.
-func (oomAdjuster *OomAdjuster) applyOomScoreAdjContainer(cgroupName string, oomScoreAdj, maxTries int) error {
+func (oomAdjuster *OOMAdjuster) applyOOMScoreAdjContainer(cgroupName string, oomScoreAdj, maxTries int) error {
 	adjustedProcessSet := make(map[int]bool)
 	for i := 0; i < maxTries; i++ {
 		continueAdjusting := false
@@ -93,7 +93,7 @@ func (oomAdjuster *OomAdjuster) applyOomScoreAdjContainer(cgroupName string, oom
 			for _, pid := range pidList {
 				if !adjustedProcessSet[pid] {
 					continueAdjusting = true
-					if err = oomAdjuster.ApplyOomScoreAdj(pid, oomScoreAdj); err == nil {
+					if err = oomAdjuster.ApplyOOMScoreAdj(pid, oomScoreAdj); err == nil {
 						adjustedProcessSet[pid] = true
 					}
 				}

pkg/util/oom/oom_linux_test.go

@@ -38,63 +38,63 @@ func sequenceToPidLister(pidListSequence [][]int) func(string) ([]int, error) {
 	}
 }
 
-// Tests that applyOomScoreAdjContainer correctly applies OOM scores to relevant processes, or
+// Tests that applyOOMScoreAdjContainer correctly applies OOM scores to relevant processes, or
 // returns the right error.
-func applyOomScoreAdjContainerTester(pidListSequence [][]int, maxTries int, appliedPids []int, expectedError bool, t *testing.T) {
-	pidOoms := make(map[int]bool)
+func applyOOMScoreAdjContainerTester(pidListSequence [][]int, maxTries int, appliedPids []int, expectedError bool, t *testing.T) {
+	pidOOMs := make(map[int]bool)
 
-	// Mock ApplyOomScoreAdj and pidLister.
-	oomAdjuster := NewOomAdjuster()
-	oomAdjuster.ApplyOomScoreAdj = func(pid int, oomScoreAdj int) error {
-		pidOoms[pid] = true
+	// Mock ApplyOOMScoreAdj and pidLister.
+	oomAdjuster := NewOOMAdjuster()
+	oomAdjuster.ApplyOOMScoreAdj = func(pid int, oomScoreAdj int) error {
+		pidOOMs[pid] = true
 		return nil
 	}
 	oomAdjuster.pidLister = sequenceToPidLister(pidListSequence)
-	err := oomAdjuster.ApplyOomScoreAdjContainer("", 100, maxTries)
+	err := oomAdjuster.ApplyOOMScoreAdjContainer("", 100, maxTries)
 
 	// Check error value.
 	if expectedError && err == nil {
-		t.Errorf("Expected error %+v when running ApplyOomScoreAdjContainer but got no error", expectedError)
+		t.Errorf("Expected error %+v when running ApplyOOMScoreAdjContainer but got no error", expectedError)
 		return
 	} else if !expectedError && err != nil {
-		t.Errorf("Expected no error but got error %+v when running ApplyOomScoreAdjContainer", err)
+		t.Errorf("Expected no error but got error %+v when running ApplyOOMScoreAdjContainer", err)
 		return
 	} else if err != nil {
 		return
 	}
 
 	// Check that OOM scores were applied to the right processes.
-	if len(appliedPids) != len(pidOoms) {
+	if len(appliedPids) != len(pidOOMs) {
 		t.Errorf("Applied OOM scores to incorrect number of processes")
 		return
 	}
 	for _, pid := range appliedPids {
-		if !pidOoms[pid] {
+		if !pidOOMs[pid] {
 			t.Errorf("Failed to apply OOM scores to process %d", pid)
 		}
 	}
 }
 
-func TestOomScoreAdjContainer(t *testing.T) {
+func TestOOMScoreAdjContainer(t *testing.T) {
 	pidListSequenceEmpty := [][]int{}
-	applyOomScoreAdjContainerTester(pidListSequenceEmpty, 3, nil, true, t)
+	applyOOMScoreAdjContainerTester(pidListSequenceEmpty, 3, nil, true, t)
 
 	pidListSequence1 := [][]int{
 		{1, 2},
 	}
-	applyOomScoreAdjContainerTester(pidListSequence1, 1, nil, true, t)
-	applyOomScoreAdjContainerTester(pidListSequence1, 2, []int{1, 2}, false, t)
-	applyOomScoreAdjContainerTester(pidListSequence1, 3, []int{1, 2}, false, t)
+	applyOOMScoreAdjContainerTester(pidListSequence1, 1, nil, true, t)
+	applyOOMScoreAdjContainerTester(pidListSequence1, 2, []int{1, 2}, false, t)
+	applyOOMScoreAdjContainerTester(pidListSequence1, 3, []int{1, 2}, false, t)
 
 	pidListSequence3 := [][]int{
 		{1, 2},
 		{1, 2, 4, 5},
 		{2, 1, 4, 5, 3},
 	}
-	applyOomScoreAdjContainerTester(pidListSequence3, 1, nil, true, t)
-	applyOomScoreAdjContainerTester(pidListSequence3, 2, nil, true, t)
-	applyOomScoreAdjContainerTester(pidListSequence3, 3, nil, true, t)
-	applyOomScoreAdjContainerTester(pidListSequence3, 4, []int{1, 2, 3, 4, 5}, false, t)
+	applyOOMScoreAdjContainerTester(pidListSequence3, 1, nil, true, t)
+	applyOOMScoreAdjContainerTester(pidListSequence3, 2, nil, true, t)
+	applyOOMScoreAdjContainerTester(pidListSequence3, 3, nil, true, t)
+	applyOOMScoreAdjContainerTester(pidListSequence3, 4, []int{1, 2, 3, 4, 5}, false, t)
 
 	pidListSequenceLag := [][]int{
 		{},
@@ -104,7 +104,7 @@ func TestOomScoreAdjContainer(t *testing.T) {
 		{1, 2, 4, 5},
 	}
 	for i := 1; i < 5; i++ {
-		applyOomScoreAdjContainerTester(pidListSequenceLag, i, nil, true, t)
+		applyOOMScoreAdjContainerTester(pidListSequenceLag, i, nil, true, t)
 	}
-	applyOomScoreAdjContainerTester(pidListSequenceLag, 6, []int{1, 2, 4, 5}, false, t)
+	applyOOMScoreAdjContainerTester(pidListSequenceLag, 6, []int{1, 2, 4, 5}, false, t)
 }

pkg/util/oom/oom_unsupported.go

@@ -24,17 +24,17 @@ import (
 
 var unsupportedErr = errors.New("setting OOM scores is unsupported in this build")
 
-func NewOomAdjuster() *OomAdjuster {
-	return &OomAdjuster{
-		ApplyOomScoreAdj:          unsupportedApplyOomScoreAdj,
-		ApplyOomScoreAdjContainer: unsupportedApplyOomScoreAdjContainer,
+func NewOOMAdjuster() *OOMAdjuster {
+	return &OOMAdjuster{
+		ApplyOOMScoreAdj:          unsupportedApplyOOMScoreAdj,
+		ApplyOOMScoreAdjContainer: unsupportedApplyOOMScoreAdjContainer,
 	}
 }
 
-func unsupportedApplyOomScoreAdj(pid int, oomScoreAdj int) error {
+func unsupportedApplyOOMScoreAdj(pid int, oomScoreAdj int) error {
 	return unsupportedErr
 }
 
-func unsupportedApplyOomScoreAdjContainer(cgroupName string, oomScoreAdj, maxTries int) error {
+func unsupportedApplyOOMScoreAdjContainer(cgroupName string, oomScoreAdj, maxTries int) error {
 	return unsupportedErr
 }