Alan Maguire

closing this as rollback support is the closest we can feasibly get to dry-run mode. to recap, with rollback we can run bpftune and see what changes are made, and...

added -Wall to clang compilation cflags and fixed warnings including this one in https://github.com/oracle-samples/bpftune/pull/29

fixed in #29

@mmarchini sorry not sure if I should tag specific folks to request review of the above? I'm not seeing a way to edit the PR to add reviewers.

@dalehamel @mmarchini hi folks, wondering if anyone has any suggestions on the above? the wider aim is to make libstapsdt-based probes available to more tracers, and to libbpf-based BPF programs....

I've got a rough prototype of uprobe support working; however it relies on specifying the instruction address currently, rather than resolving it for the user. For example, according to "objdump...

it's looking for vmlinux BTF which is usually available in /sys/kernel/btf/vmlinux. BTF for kernel/modules is made available here via in-kernel mechanisms. does your container have a way to make /sys/kernel/btf...

Is CONFIG_DEBUG_INFO_BTF specified? That's needed to get /sys/kernel/btf/vmlinux

> Sorry for the delay here - I've only just come back to this issue… > > I've looked at my kernel configuration, and to enable `CONFIG_DEBUG_INFO_BTF` requires several efficiency-sapping...

thanks for collecting this data, it's great to know! the problem is that using the current scheme, DWARF is required to generate BTF, and the process of going from DWARF->BTF...