On Sun, Aug 22, 2021 at 01:59:00PM +0200, Lorenzo Fontana wrote:
> When writing BPF programs one might refer to the man page
> to lookup helpers. When you do so, however you don't have
> a way to immediately know if you can use the helper
> based on your program licensing requirements.
>
> This patch adds a specific line in the man bpf-helpers
> to show that information straight away.
>
> Signed-off-by: Lorenzo Fontana <fontanalorenz@xxxxxxxxx>
...
> * long bpf_trace_printk(const char *fmt, u32 fmt_size, ...)
> * Description
> @@ -1613,6 +1621,8 @@ union bpf_attr {
> * Return
> * The number of bytes written to the buffer, or a negative error
> * in case of failure.
> + * GPL Compatibility
> + * Required
I think manually annotating the docs is too easy to get wrong.
I think scripts/bpf_doc.py should be able to pick it up from the code somehow?
or rely on dynamic discovery by bpftool?
