The problem has been solved.
Tue, May 11
Nov 28 2020
Thanks for your reply. It is difficult to submit code to community or Gerrit using company's account and system. So, I wonder whether it's permitted to upload by providing modifications or “git send-email” with patches.
Nov 19 2020
Yes, The power domain topology of the system can be described as 8 sockets, each socket with 10 clusters and each cluster with 8 cores. We just consider a system like this might face the constraint mentioned above, and we must modify the declaration of lock_index to solve this problem. Feature, more and more interconnected system, with numerous cpus, might face the same problem.