Eelco Chaudron <echaudro@xxxxxxxxxx> writes:
> Currently when you want to attach a trace program to a bpf program
> the section name needs to match the tracepoint/function semantics.
>
> However the addition of the bpf_program__set_attach_target() API
> allows you to specify the tracepoint/function dynamically.
>
> The call flow would look something like this:
>
> xdp_fd = bpf_prog_get_fd_by_id(id);
> trace_obj = bpf_object__open_file("func.o", NULL);
> prog = bpf_object__find_program_by_title(trace_obj,
> "fentry/myfunc");
> bpf_program__set_expected_attach_type(prog, BPF_TRACE_FENTRY);
> bpf_program__set_attach_target(prog, xdp_fd,
> "xdpfilt_blk_all");
> bpf_object__load(trace_obj)
>
> Signed-off-by: Eelco Chaudron <echaudro@xxxxxxxxxx>
Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
