Some hint for Dynamic Debugging During Initialization

[CHENGWEI001]

I trying to solve this exercise, but I can't figure it out, I have a post https://stackoverflow.com/questions/62238868/enable-dynamic-debug-message-for-insmod for this question.

Wondering is there any hint about how to do so? I tried cmd : insmod dyndbg.ko dyndbg=\"func my_debug_func +p\ , but it not work since dyndbg doesn't match any module in kernel ddebug_tables