Summary of Linux kernel debugging methods Ddebug

Use

Linux kernel dynamic debugging features, suitable for driver and kernel subsystem debugging. The main function of dynamic debugging is to allow you to dynamically open or close various prompts in the kernel code. Suitable for driver and kernel threading function debugging.

"How to use"

Depending on the Config_dynamic_debug kernel configuration option, once set, all kernel debug functions such as Pr_debug ()/dev_debug () can dynamically print logs to the terminal. Open or close the debug log after the system starts by reading and writing the <debugfs>/dynamic_debug/control file.

Reference

Http://www.oschina.net/translate/dynamic-debug-howto?print

Summary of Linux kernel debugging methods Ddebug