btf_ptr
BPF_CALL_5(bpf_snprintf_btf, char *, str, u32, str_size, struct btf_ptr *, ptr,
BPF_CALL_4(bpf_seq_printf_btf, struct seq_file *, m, struct btf_ptr *, ptr,
static int bpf_btf_printf_prepare(struct btf_ptr *ptr, u32 btf_ptr_size,
static int bpf_btf_printf_prepare(struct btf_ptr *ptr, u32 btf_ptr_size,
if (btf_ptr_size != sizeof(struct btf_ptr))
static struct btf_ptr ptr = { };
static struct btf_ptr _ptr = { }; \
static struct btf_ptr p = { };