Function Tracer

References

[1] https://www.kernel.org/doc/Documentation/trace/ftrace.txt

[2] https://blogs.vmware.com/opensource/2019/11/12/ftrace-linux-kernel/

[3] https://kernel-recipes.org/en/2017/talks/understanding-the-linux-kernel-via-ftrace/

[4] https://lwn.net/Articles/365835/ && https://lwn.net/Articles/366796/

[5] Blog Series http://embeddedguruji.blogspot.com/2019/01/debugging-linux-kernel-using-ftrace.html