linux-kernel - [PATCH] zram: Remove KMSG

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Message-ID: <20251126143602.2207435-1-hca@linux.ibm.com>
Date: Wed, 26 Nov 2025 15:36:02 +0100
From: Heiko Carstens <hca@...ux.ibm.com>
To: Jens Axboe <axboe@...nel.dk>, Minchan Kim <minchan@...nel.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] zram: Remove KMSG_COMPONENT macro

The KMSG_COMPONENT macro is a leftover of the s390 specific "kernel message
catalog" from 2008 [1] which never made it upstream.

The macro was added to s390 code to allow for an out-of-tree patch which
used this to generate unique message ids. Also this out-of-tree doesn't
exist anymore.

The pattern of how the KMSG_COMPONENT is used was partially also used for
non s390 specific code, for whatever reasons.

Remove the macro in order to get rid of a pointless indirection.

[1] https://lwn.net/Articles/292650/

Signed-off-by: Heiko Carstens <hca@...ux.ibm.com>
---
 drivers/block/zram/zram_drv.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index a43074657531..4ea0d435a24e 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -12,8 +12,7 @@
  *
  */

-#define KMSG_COMPONENT "zram"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+#define pr_fmt(fmt) "zram: " fmt

 #include <linux/module.h>
 #include <linux/kernel.h>
-- 
2.51.0