Research on Real-time Improvement Technology of Linux Based on Multi-core ARM

With the development and progress of automobile industry, the automobile electronic control system has put forward higher and higher requirements to the controller. From the realization of the controller to vehicle test, all need hardware in loop test, and ensure the real test results of core is to run in real-time processor on the real-time operating system, at the same time with a single core processor in the operation of the real-time system bottlenecks, this paper USES the multi-core processor platform to build real-time problems of real-time system research. The Linux system is studied in this paper after the defects in real time, this paper proposes a by adding preemption patch solution to realize real- time Linux system, at the same time, using the advantages of multi-core processors, the CPU resources of real-time and non- real-time tasks are divided, and the number of interrupts on the CPU where the real-time task is located is reduced. Finally, a specific RTOS development case based on the PREEMPT_RT patch is given, and on this basis, the effectiveness of the proposed scheme in the real-time performance of the system is verified.