var runtime.extraMInUse

4 uses

	runtime (current package)
		proc.go#L918: 	count := mcount() - int32(extraMInUse.Load()) - int32(extraMLength.Load())
		proc.go#L2653: 	extraMInUse atomic.Uint32
		proc.go#L2707: 	extraMInUse.Add(1)
		proc.go#L2717: 	extraMInUse.Add(-1)