Re: [PATCH bpf-next] docs/bpf: Update documentation for BTF_KIND_FUNC

[sdf@google.com]

On 07/13, Indu Bhagat wrote:
> The vlen bits in the BTF type of kind BTF_KIND_FUNC are used to convey the
> linkage information for functions.

> Signed-off-by: Indu Bhagat <indu.bhagat@oracle.com>

Reviewed-by: Stanislav Fomichev <sdf@google.com>

Judging by:

static inline u16 btf_func_linkage(const struct btf_type *t)
{
	return BTF_INFO_VLEN(t->info);
}

> ---
>   Documentation/bpf/btf.rst | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

> diff --git a/Documentation/bpf/btf.rst b/Documentation/bpf/btf.rst
> index f49aeef62d0c..b3a9d5ac882c 100644
> --- a/Documentation/bpf/btf.rst
> +++ b/Documentation/bpf/btf.rst
> @@ -369,7 +369,7 @@ No additional type data follow ``btf_type``.
>     * ``name_off``: offset to a valid C identifier
>     * ``info.kind_flag``: 0
>     * ``info.kind``: BTF_KIND_FUNC
> -  * ``info.vlen``: 0
> +  * ``info.vlen``: linkage information (static=0, global=1)
>     * ``type``: a BTF_KIND_FUNC_PROTO type

>   No additional type data follow ``btf_type``.
> --
> 2.31.1