Export list of HugePageSizeUnits

This will allow others to import it instead of copying it.

Signed-off-by: Odin Ugedal <odin@ugedal.com>

Author: odinuge

libcontainer/cgroups/utils.go

@@ -22,6 +22,13 @@ const (
 	CgroupProcesses  = "cgroup.procs"
 )
 
+// HugePageSizeList is a list of the units used by the linux kernel when
+// naming the HugePage control files.
+// https://www.kernel.org/doc/Documentation/cgroup-v1/hugetlb.txt
+// TODO Since the kernel only use KB, MB and GB; TB and PB should be removed,
+// depends on https://github.com/docker/go-units/commit/a09cd47f892041a4fac473133d181f5aea6fa393
+var HugePageSizeUnitList = []string{"B", "KB", "MB", "GB", "TB", "PB"}
+
 // https://www.kernel.org/doc/Documentation/cgroup-v1/cgroups.txt
 func FindCgroupMountpoint(cgroupPath, subsystem string) (string, error) {
 	mnt, _, err := FindCgroupMountpointAndRoot(cgroupPath, subsystem)
@@ -422,14 +429,13 @@ func GetHugePageSize() ([]string, error) {
 
 func getHugePageSizeFromFilenames(fileNames []string) ([]string, error) {
 	var pageSizes []string
-	sizeList := []string{"B", "KB", "MB", "GB", "TB", "PB"}
 	for _, fileName := range fileNames {
 		nameArray := strings.Split(fileName, "-")
 		pageSize, err := units.RAMInBytes(nameArray[1])
 		if err != nil {
 			return []string{}, err
 		}
-		sizeString := units.CustomSize("%g%s", float64(pageSize), 1024.0, sizeList)
+		sizeString := units.CustomSize("%g%s", float64(pageSize), 1024.0, HugePageSizeUnitList)
 		pageSizes = append(pageSizes, sizeString)
 	}