bpf_get_btf_vmlinux
struct btf *bpf_get_btf_vmlinux(void);
btf = bpf_get_btf_vmlinux();
vmlinux_btf = bpf_get_btf_vmlinux();
btf = bpf_get_btf_vmlinux();
vmlinux_btf = bpf_get_btf_vmlinux();
btf = bpf_get_btf_vmlinux();
id = btf_find_by_name_kind(bpf_get_btf_vmlinux(), func_name, kind);
main_btf = bpf_get_btf_vmlinux();
btf = bpf_get_btf_vmlinux();
attach_btf = bpf_get_btf_vmlinux();
reg->btf = bpf_get_btf_vmlinux(); /* can't fail at this point */
bpf_get_btf_vmlinux();
*btf = bpf_get_btf_vmlinux();
btf = bpf_get_btf_vmlinux();