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Dynamic Priority Inversion Avoidance in Real-Time Operating Systems

One of the most important design goals in a real-time system is to guarantee that all tasks can finish their work before reaching deadline. However, the sequence of resource allocation among tasks of different priorities may result in a severe priority inversion problem such that a high priority task will violate its deadline requirement. Although previous solutions can shorten the latency resulted from the inversion, they do not address how to avoid the occurrence of priority inversion. In this paper, we propose a dynamic priority inversion avoidance mechanism to avoid the priority inversion. According to the simulation results, the proposed mechanism can guarantee the real-time requirements of the