type runtime.gcMarkWorkerMode

4 uses

	runtime (current package)
		mgc.go#L259: type gcMarkWorkerMode int
		mgc.go#L264: 	gcMarkWorkerNotWorker gcMarkWorkerMode = iota
		mgcpacer.go#L857: func (c *gcControllerState) markWorkerStop(mode gcMarkWorkerMode, duration int64) {
		runtime2.go#L709: 	gcMarkWorkerMode gcMarkWorkerMode