RTEMS | SMP: Add support for the MPCP locking protocol (!1358)
Ivy Zhuang (@purple-affogato)
gitlab at rtems.org
Sat Jul 18 18:42:12 UTC 2026
Ivy Zhuang created a merge request: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1358
Project:Branches: purple-affogato/rtems-fork:add_mpcp to rtems/rtos/rtems:main
Author: Ivy Zhuang
## Summary
Add support for the Multiprocessor Priority Ceiling Protocol (MPCP) to RTEMS for use in SMP configurations. The original implementation of MPCP to RTEMS comes from [Supporting Multiprocessor Resource Synchronization Protocols in RTEMS](https://arxiv.org/pdf/2104.06366) by Junjie Shi, Jan Duy Thien Pham, Malte Muench, Jan Viktor Hafemeister, Jian-Jia Chen, and Kuan-Hsun Chen.
The first commit of this MR contains the changes for MPCP from the research found in this [GitHub repository](https://github.com/JJShi92/RTEMS-Resource-Synchronization-Protocols).
Beyond that, this MR adds support for MPCP to the semaphore manager, smpmpcp01 in smptests to test the MPCP implementation, and updates to the MPCP implementation.
Updates #4612
## Generative AI
None
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View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1358
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