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// Copyright 2020 Intel Corporation. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cgroups
import (
"path"
"path/filepath"
)
//nolint
const (
// Tasks is a cgroup's "tasks" entry.
Tasks = "tasks"
// Procs is cgroup's "cgroup.procs" entry.
Procs = "cgroup.procs"
// CpuShares is the cpu controller's "cpu.shares" entry.
CpuShares = "cpu.shares"
// CpuPeriod is the cpu controller's "cpu.cfs_period_us" entry.
CpuPeriod = "cpu.cfs_period_us"
// CpuQuota is the cpu controller's "cpu.cfs_quota_us" entry.
CpuQuota = "cpu.cfs_quota_us"
// CpusetCpus is the cpuset controller's cpuset.cpus entry.
CpusetCpus = "cpuset.cpus"
// CpusetMems is the cpuset controller's cpuset.mems entry.
CpusetMems = "cpuset.mems"
)
var (
// mount is the parent directory for per-controller cgroupfs mounts.
mountDir = "/sys/fs/cgroup"
// v2Dir is the parent directory for per-controller cgroupfs mounts.
v2Dir = path.Join(mountDir, "unified")
// KubeletRoot is the --cgroup-root option the kubelet is running with.
KubeletRoot = ""
)
// GetMountDir returns the common mount point for cgroup v1 controllers.
func GetMountDir() string {
return mountDir
}
// SetMountDir sets the common mount point for the cgroup v1 controllers.
func SetMountDir(dir string) {
v2, _ := filepath.Rel(mountDir, v2Dir)
mountDir = dir
if v2 != "" {
v2Dir = path.Join(mountDir, v2)
}
}
// GetV2Dir returns the cgroup v2 unified mount directory.
func GetV2Dir() string {
return v2Dir
}
// SetV2Dir sets the unified cgroup v2 mount directory.
func SetV2Dir(dir string) {
if dir[0] == '/' {
v2Dir = dir
} else {
v2Dir = path.Join(mountDir, v2Dir)
}
}
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