update cadvisor godeps to v0.33.0

vendor/github.com/google/cadvisor/container/libcontainer/helpers.go

@@ -19,6 +19,7 @@ import (
 
 	info "github.com/google/cadvisor/info/v1"
 
+	"github.com/google/cadvisor/container"
 	"github.com/opencontainers/runc/libcontainer/cgroups"
 	"k8s.io/klog"
 )
@@ -33,18 +34,36 @@ type CgroupSubsystems struct {
 	MountPoints map[string]string
 }
 
-// Get information about the cgroup subsystems.
-func GetCgroupSubsystems() (CgroupSubsystems, error) {
+// Get information about the cgroup subsystems those we want
+func GetCgroupSubsystems(includedMetrics container.MetricSet) (CgroupSubsystems, error) {
 	// Get all cgroup mounts.
 	allCgroups, err := cgroups.GetCgroupMounts(true)
 	if err != nil {
 		return CgroupSubsystems{}, err
 	}
 
-	return getCgroupSubsystemsHelper(allCgroups)
+	disableCgroups := map[string]struct{}{}
+
+	//currently we only support disable blkio subsystem
+	if !includedMetrics.Has(container.DiskIOMetrics) {
+		disableCgroups["blkio"] = struct{}{}
+	}
+	return getCgroupSubsystemsHelper(allCgroups, disableCgroups)
 }
 
-func getCgroupSubsystemsHelper(allCgroups []cgroups.Mount) (CgroupSubsystems, error) {
+// Get information about all the cgroup subsystems.
+func GetAllCgroupSubsystems() (CgroupSubsystems, error) {
+	// Get all cgroup mounts.
+	allCgroups, err := cgroups.GetCgroupMounts(true)
+	if err != nil {
+		return CgroupSubsystems{}, err
+	}
+
+	emptyDisableCgroups := map[string]struct{}{}
+	return getCgroupSubsystemsHelper(allCgroups, emptyDisableCgroups)
+}
+
+func getCgroupSubsystemsHelper(allCgroups []cgroups.Mount, disableCgroups map[string]struct{}) (CgroupSubsystems, error) {
 	if len(allCgroups) == 0 {
 		return CgroupSubsystems{}, fmt.Errorf("failed to find cgroup mounts")
 	}
@@ -55,6 +74,9 @@ func getCgroupSubsystemsHelper(allCgroups []cgroups.Mount) (CgroupSubsystems, er
 	mountPoints := make(map[string]string, len(allCgroups))
 	for _, mount := range allCgroups {
 		for _, subsystem := range mount.Subsystems {
+			if _, exists := disableCgroups[subsystem]; exists {
+				continue
+			}
 			if _, ok := supportedSubsystems[subsystem]; !ok {
 				// Unsupported subsystem
 				continue