> The basic trick of dealing with the kernel is becoming comfortable working in a large codebase most of which you don't understand, and figuring out how to fin

> The basic trick of dealing with the kernel is becoming comfortable working in a large codebase most of which you don't understand, and figuring out how to find what you need. Honestly, git grep is one of the best tools here. That's a very good point. If we're recommending tools, cscope (especially if you're a vim/emacs user) or opengrok (if you're not or prefer a web frontend for other reasons) are super helpful for navigating and comprehending large, mysterious codebases. DTrace/eBPF are also valuable tools for grokking kernel functionality.