[zozbot234]

The best exposition of advanced concurrency I know of is Mara Bos' Rust Atomics and Locks - https://marabos.nl/atomics/ also available as a physical book. Don't let the "Rust" reference put you off, the book is relevant to any low-level programming language.

(If you're interested in concurrency in a Linux context as seen from a broader systems point of view, you might like Paul McKeneny's 'Is Parallel Programming Hard, And If So What Can You Do About It?" https://mirrors.edge.kernel.org/pub/linux/kernel/people/paul... )

[gpderetta]

Another great book is "The Art of Multiprocessor Programming" by Maurice Herlihy and Nir Shavit.

edit: already mentioned elsethread.