From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Jason Xing <kerneljasonxing@gmail.com>
Cc: akpm@linux-foundation.org, axboe@kernel.dk,
michel.dagenais@polymtl.ca, richardj_moore@uk.ibm.com,
bob@watson.ibm.com, karim@opersys.com, zanussi@us.ibm.com,
linux-kernel@vger.kernel.org, Jason Xing <kernelxing@tencent.com>
Subject: Re: [PATCH] MAINTAINERS: add RELAY entry
Date: Mon, 2 Mar 2026 10:35:05 +0200 [thread overview]
Message-ID: <aaVLuTzUndBTmj3-@ashevche-desk.local> (raw)
In-Reply-To: <20260301020902.56476-1-kerneljasonxing@gmail.com>
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.
> [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@linux-foundation.org>
> Signed-off-by: Jason Xing <kernelxing@tencent.com>
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-03-02 8:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-01 2:09 Jason Xing
2026-03-01 13:38 ` Jens Axboe
2026-03-02 8:35 ` Andy Shevchenko [this message]
2026-03-02 8:40 ` Jason Xing
2026-03-02 8:47 ` Jason Xing
2026-03-02 8:54 ` Andy Shevchenko
2026-03-02 9:10 ` Jason Xing
2026-03-02 8:51 ` Andy Shevchenko
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