type runtime.gcMarkWorkerMode

4 uses

	runtime (current package)
		mgc.go#L267: type gcMarkWorkerMode int
		mgc.go#L272: 	gcMarkWorkerNotWorker gcMarkWorkerMode = iota
		mgcpacer.go#L880: func (c *gcControllerState) markWorkerStop(mode gcMarkWorkerMode, duration int64) {
		runtime2.go#L716: 	gcMarkWorkerMode gcMarkWorkerMode