+
+ // Path depends on cgroup version. We need to check which version is in use.
+ // For that following command can be used: 'stat -fc %T /sys/fs/cgroup/'
+ // In case the output states 'cgroup2fs' then cgroups v2 is used, 'tmpfs' in case cgroups v1.
+ cmd := exec.Command("stat", "-fc", "%T", "/sys/fs/cgroup/")
+ byteOutput, err := cmd.CombinedOutput()
+ if err != nil {
+ return err
+ }
+ CpuPath := CgroupPath
+ if strings.Contains(string(byteOutput), "tmpfs") {
+ CpuPath += "cpuset/cpuset.effective_cpus"
+ } else if strings.Contains(string(byteOutput), "cgroup2fs") {
+ CpuPath += "cpuset.cpus.effective"
+ } else {
+ return errors.New("cgroup unknown fs: " + string(byteOutput))
+ }
+
+ file, err := os.Open(CpuPath)