[Sesse__]

It should also be said that you need some sort of DWARF-like information to understand inlining. If I have a function A that inlines B that in turn inlines C, I'd often like to understand that C takes a bunch of time, and with frame pointers only, that information gets lost.

[javierhonduco]

Inlined functions can be symbolized using DWARF line information[0] while unwinding requires DWARF unwind information (CFI), which the x86_64 ABI mandates in every single ELF in the `.eh_frame` section

- [0] This line information might or might not be present in an executable but luckily there's debuginfod (https://sourceware.org/elfutils/Debuginfod.html)