Hi, I have been reading this https://facebookmicrosites.github.io/bpf/blog/2020/02/19/bpf-portability-and-co-re.html and understand that btf is generated with CONFIG_DEBUG_INFO_BTF=y and is made available at /sys/kernel/btf/vmlinux. Is it possible to have similar functionality for kernel modules? For example, is it possible to generate BTF for the XFS kernel module and have it made available at /sys/kernel/btf/xfs ? An unrelated general question: are there documentation/guide/conference talk that talks about BPF from the kernel space perspective? For example, is there a checklist of what needs to be done if I want to add additional hook or new bpf program type? I have been doing some research and I have found a lot of guides and tutorials from the user space perspective (writing bpf programs, attaching them, etc.) and some deep bpf internal (like the verifier and jit) but I am having trouble finding something that covers the topics above. Regards, Kenny Ho
