Do those tools really need to implement their own unwinding though? This really should just need to be implemented once in a library and then used wherever unwinding is needed.
With the combination of eBPF and DWARF-based it's not quite that simple, there's a pretty elaborate dance between user-space and kernel-space that needs to happen for this to work. With frame-pointers it's walking a linked list in kernel-space.
Comments
Do those tools really need to implement their own unwinding though? This really should just need to be implemented once in a library and then used wherever unwinding is needed.
With the combination of eBPF and DWARF-based it's not quite that simple, there's a pretty elaborate dance between user-space and kernel-space that needs to happen for this to work. With frame-pointers it's walking a linked list in kernel-space.