config-linux: add idle option for container cgroup

Signed-off-by: wineway <[email protected]>

Author: wineway

config-linux.md

@@ -361,6 +361,7 @@ The following parameters can be specified to set up the controller:
 * **`realtimePeriod`** *(uint64, OPTIONAL)* - same as **`period`** but applies to realtime scheduler only
 * **`cpus`** *(string, OPTIONAL)* - list of CPUs the container will run in
 * **`mems`** *(string, OPTIONAL)* - list of Memory Nodes the container will run in
+* **`idle`** *(int64, OPTIONAL)* - cgroups are configured with minimum weight, 0: default behavior, 1: SCHED_IDLE.
 
 #### Example
 
@@ -372,7 +373,8 @@ The following parameters can be specified to set up the controller:
     "realtimeRuntime": 950000,
     "realtimePeriod": 1000000,
     "cpus": "2-3",
-    "mems": "0-7"
+    "mems": "0-7",
+    "idle": 0
 }
 ```
 

specs-go/config.go

@@ -330,6 +330,8 @@ type LinuxCPU struct {
 	Cpus string `json:"cpus,omitempty"`
 	// List of memory nodes in the cpuset. Default is to use any available memory node.
 	Mems string `json:"mems,omitempty"`
+	// cgroups are configured with minimum weight, 0: default behavior, 1: SCHED_IDLE. Default 0
+	Idle *int64 `json:"idle,omitempty"`
 }
 
 // LinuxPids for Linux cgroup 'pids' resource management (Linux 4.3)