Correct depends on what problem one is trying to solve though the parsing can certainly be cleaned up before release. It is a working WIP.

> Do you expect that Linux is going to change their constant definitions out from under you

Unlikely but I have been surprised before. Hardcoding to pretty much any modern kernel source version forever for this narrow use case is probably fine.

The goal is about helping me and a reviewer quickly form confidence none of the magic numbers are mistaken or malicious in an automated way against the source of truth.