On Thu, Nov 18, 2021 at 12:24:35PM +0100, Jiri Olsa wrote: > + > +DEFINE_BPF_MULTI_FUNC(unsigned long a1, unsigned long a2, > + unsigned long a3, unsigned long a4, > + unsigned long a5, unsigned long a6) This is probably a bit too x86 specific. May be make add all 12 args? Or other places would need to be tweaked? > +BTF_ID_LIST_SINGLE(bpf_multi_func_btf_id, func, bpf_multi_func) ... > - prog->aux->attach_btf_id = attr->attach_btf_id; > + prog->aux->attach_btf_id = multi_func ? bpf_multi_func_btf_id[0] : attr->attach_btf_id; Just ignoring that was passed in uattr? Maybe instead of ignoring dopr BPF_F_MULTI_FUNC and make libbpf point to that btf_id instead? Then multi or not can be checked with if (attr->attach_btf_id == bpf_multi_func_btf_id[0]).
