Re: [PATCH] MAINTAINERS: add RELAY entry

[Jason Xing]

Hi Andy,

On Mon, Mar 2, 2026 at 4:35 PM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>
> On Sun, Mar 01, 2026 at 10:09:02AM +0800, Jason Xing wrote:
>
> > RELAYFS was originally developed by Tom Zanussi and Karim
> > Yaghmour in 2005[1]. Jens Axboe converted it from filesystem
> > into a generic API in 2006[2] and made it widely known through
> > the notable I/O tracing tool blktrace. In the decade, there remain
> > a few users scatterred across different subsystems, like recently
> > added wifi commit[3] that is an example to show how to communicate
> > between users and kernel. Last year I've already done some
> > maintenance and added/corrected some diagnostic counters.
> >
> > At Tencent, we internally maintain RELAY as one of most crucial
> > components of network observibility platform which was shared a
> > bit at LPC 2025[4][5] and hopefully will be published in the paper
> > this year. RELAY has proven highly efficient due to its inherent
> > design essence. This design becomes the indispensable way to build
> > a 7x24 platform monitoring various hot paths even without any
> > selectively sampling (yes, sampling is commonly used to avoid the
> > overall performance degradation). One of the recommended usages is
> > use its zerocopy function relay_reserve() to transfer data in a
> > raw format that can be recognized and parsed by the corresponding
> > application to userspace without introducing heavy locks and
> > complicated logic that appears in other types of approaches, like
> > printk. More details can be discovered by reading through the
> > Documentation :)
> >
> > Credits are given to the all the contributors and reviewers for
> > RELAY/RELAYFS in the past and future! Many thanks!
> >
> > [1]: commit e82894f84dbb ("[PATCH] relayfs")
> > [2]: commit b86ff981a825 ("[PATCH] relay: migrate from relayfs to
> > a generic relay API")
>
> It's better to read as a single line here
>
> [2]: commit b86ff981a825 ("[PATCH] relay: migrate from relayfs to > a generic relay API")
>
> OR you can even have it as a proper Link tag:
>
> Link: https://git.kernel.org/torvalds/c/b86ff981a825 [2]
>
> Same for the rest.

Thanks for the review.

The fact is that originally I used a single line but checkpatch warned
me because of exceeding 75 chars. The current format is just to split
it into two lines as script requested.

Thanks,
Jason

>
> > [3]: commit c1bf6959dd81 ("wifi: ath11k: Register relayfs entries
> > for CFR dump")
> > [4]: https://lpc.events/event/19/contributions/2055/
> > [5]: https://lpc.events/event/19/contributions/2010/
>
> >
>
> Note, when converting to Link tags the above, this blank line should be
> removed.
>
> > Acked-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> > Signed-off-by: Jason Xing <kernelxing@xxxxxxxxxxx>
>
> --
> With Best Regards,
> Andy Shevchenko
>
>