From: Jason Xing Date: Sun, 1 Mar 2026 02:09:02 +0000 (+0800) Subject: MAINTAINERS: add RELAY entry X-Git-Tag: v7.0-rc4~42^2~5 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06de173b138513087896f9cf090f30b35846518d;p=thirdparty%2Fkernel%2Flinux.git MAINTAINERS: add RELAY entry 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 to 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") [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/ Link: https://lkml.kernel.org/r/20260301020902.56476-1-kerneljasonxing@gmail.com Signed-off-by: Jason Xing Acked-by: Andrew Morton Acked-by: Jens Axboe Cc: Andriy Shevchenko Cc: Tom Zanussi Signed-off-by: Andrew Morton --- diff --git a/MAINTAINERS b/MAINTAINERS index e4572a36afd2..0ecf11bab619 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22284,6 +22284,16 @@ L: linux-wireless@vger.kernel.org S: Orphan F: drivers/net/wireless/rsi/ +RELAY +M: Andrew Morton +M: Jens Axboe +M: Jason Xing +L: linux-kernel@vger.kernel.org +S: Maintained +F: Documentation/filesystems/relay.rst +F: include/linux/relay.h +F: kernel/relay.c + REGISTER MAP ABSTRACTION M: Mark Brown L: linux-kernel@vger.kernel.org