skip set cpu.weight when cpu.idle is enabled in cgroups v2

Signed-off-by: axb <uaxb@hotmail.com>

Author: qdaxb

libcontainer/cgroups/fs2/cpu.go

@@ -29,7 +29,8 @@ func setCpu(dirPath string, r *configs.Resources) error {
 	}
 
 	// NOTE: .CpuShares is not used here. Conversion is the caller's responsibility.
-	if r.CpuWeight != 0 {
+	// can not set cpu.weight if cpu.idle is enabled
+	if r.CpuWeight != 0 && (r.CPUIdle == nil || *r.CPUIdle == 0) {
 		if err := cgroups.WriteFile(dirPath, "cpu.weight", strconv.FormatUint(r.CpuWeight, 10)); err != nil {
 			return err
 		}