Study of Priority Inversion in Embedded Linux

  • Authors:

  • Chun-tao Man;Peng Li;Yan Li

  • Affiliations:

  • Harbin University of Science and Technology, China;Harbin University of Science and Technology, China;Harbin University of Science and Technology, China

  • Venue:
  • ICICIC '06 Proceedings of the First International Conference on Innovative Computing, Information and Control - Volume 3
  • Year:
  • 2006

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Abstract

Aiming at the priority inversion of the process scheduling, through the analysis of the process scheduling in Linux kernel..this paper mainly studies the reason leading to priority inversion and the mutex based on semaphore, it also makes priority inheritance protocol into operation through modified the mutex. The priority inheritance protocol of the mutex reduces scheduling postpone and enhances the real-time performance, which has been proved by the experimentation.