libbpf_find_vmlinux_btf_id
LIBBPF_API int libbpf_find_vmlinux_btf_id(const char *name,
btf_id_test1 = libbpf_find_vmlinux_btf_id("bpf_fentry_test1", BPF_TRACE_FENTRY);
btf_id_test2 = libbpf_find_vmlinux_btf_id("bpf_fentry_test2", BPF_TRACE_FENTRY);
err = libbpf_find_vmlinux_btf_id("bpf_fentry_test1",
btf_id = libbpf_find_vmlinux_btf_id("__rcu_read_lock", BPF_TRACE_FENTRY);
if (libbpf_find_vmlinux_btf_id("hrtimer_start_range_ns_user", BPF_TRACE_FENTRY) > 0)
attach_btf_id = libbpf_find_vmlinux_btf_id(test->kfunc,