On Wed, Jun 8, 2022 at 12:27 PM Eduard Zingerman <eddyz87@xxxxxxxxx> wrote:
>
> The BTF and func_info specification for test_verifier tests follows
> the same notation as in prog_tests/btf.c tests. E.g.:
>
> ...
> .func_info = { { 0, 6 }, { 8, 7 } },
> .func_info_cnt = 2,
> .btf_strings = "\0int\0",
> .btf_types = {
> BTF_TYPE_INT_ENC(1, BTF_INT_SIGNED, 0, 32, 4),
> BTF_PTR_ENC(1),
> },
> ...
>
> The BTF specification is loaded only when specified.
>
> Signed-off-by: Eduard Zingerman <eddyz87@xxxxxxxxx>
[...]
> +
> +static int load_btf_for_test(struct bpf_test *test)
> +{
> + int types_num = 0;
> +
> + while (types_num < MAX_BTF_TYPES &&
> + test->btf_types[types_num] != BTF_END_RAW)
> + ++types_num;
> +
> + int types_len = types_num * sizeof(test->btf_types[0]);
> +
> + return load_btf_spec(test->btf_types, types_len,
> + test->btf_strings, sizeof(test->btf_strings));
IIUC, strings_len is always 256. Is this expected?
Thanks,
Song
> }
>
> static int create_map_spin_lock(void)
> @@ -793,8 +839,6 @@ static int create_map_kptr(void)
> return fd;
> }
[...]
