var runtime.extraMInUse

4 uses

	runtime (current package)
		proc.go#L973: 	count := mcount() - int32(extraMInUse.Load()) - int32(extraMLength.Load())
		proc.go#L2738: 	extraMInUse atomic.Uint32
		proc.go#L2792: 	extraMInUse.Add(1)
		proc.go#L2802: 	extraMInUse.Add(-1)