[$] Better debugging information for inlined kernel functions

Modern compilers perform a lot of optimizations, which can complicate debugging.
Song Liu and Thierry Treyer spoke about a potential improvement to

BPF Type Format (BTF) debugging information that could partially combat that
problem at the 2025 Linux Storage, Filesystem,
Memory-Management, and BPF Summit.
They want to add information on selectively inlined functions to BTF in order to
better support tracing tools.
Treyer participated remotely.