On Fri, Jan 24, 2025 at 07:16:41AM -0800, Breno Leitao wrote:
> Rename "userdata" to "extradata" since this structure will hold both
> user and system data in future patches. Keep "userdata" term only for
> data that comes from userspace (configfs), while "extradata" encompasses
> both userdata and future kerneldata.
>
> These are the rules of the design
>
> 1. extradata_complete will hold userdata and sysdata (coming)
> 2. sysdata will come after userdata_length
> 3. extradata_complete[userdata_length] string will be replaced at every
> message
> 5. userdata is replaced when configfs changes (update_userdata())
> 6. sysdata is replaced at every message
>
> Example:
> extradata_complete = "userkey=uservalue cpu=42"
> userdata_length = 17
> sysdata_length = 7 (space (" ") is part of sysdata)
>
> Since sysdata is still not available, you will see the following in the
> send functions:
>
> extradata_len = nt->userdata_length;
>
> The upcoming patches will, which will add support for sysdata, will
> change it to:
>
> extradata_len = nt->userdata_length + sysdata_len;
>
> Signed-off-by: Breno Leitao <lei...@debian.org>
Reviewed-by: Simon Horman <ho...@kernel.org>
