+ panic-add-panic_sys_info-sysctl-to-take-human-readable-string-parameter-fix.patch added to mm-nonmm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: panic: add __maybe_unused to sys_info_avail
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     panic-add-panic_sys_info-sysctl-to-take-human-readable-string-parameter-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/panic-add-panic_sys_info-sysctl-to-take-human-readable-string-parameter-fix.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Nathan Chancellor <nathan@kernel.org>
Subject: panic: add __maybe_unused to sys_info_avail
Date: Tue, 08 Jul 2025 08:37:57 -0700

Clang warns (or errors with CONFIG_WERROR=y):

  lib/sys_info.c:52:19: error: variable 'sys_info_avail' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration]
     52 | static const char sys_info_avail[] = "tasks,mem,timers,locks,ftrace,all_bt,blocked_tasks";
        |                   ^~~~~~~~~~~~~~

sys_info_avail is only used within sizeof(), meaning it is only used at
compile time, which clang warns about in case the developer intended to
use the variable elsewhere. This appears to be intentional in this case,
so mark sys_info_avail with __maybe_unused to silence the warning.

Link: https://lkml.kernel.org/r/20250708-fix-clang-sys_info_avail-warning-v1-1-60d239eacd64@kernel.org
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Cc: Feng Tang <feng.tang@linux.alibaba.com>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: "Paul E . McKenney" <paulmck@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/sys_info.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/sys_info.c~panic-add-panic_sys_info-sysctl-to-take-human-readable-string-parameter-fix
+++ a/lib/sys_info.c
@@ -49,7 +49,7 @@ unsigned long sys_info_parse_param(char
 
 #ifdef CONFIG_SYSCTL
 
-static const char sys_info_avail[] = "tasks,mem,timers,locks,ftrace,all_bt,blocked_tasks";
+static const char sys_info_avail[] __maybe_unused = "tasks,mem,timers,locks,ftrace,all_bt,blocked_tasks";
 
 int sysctl_sys_info_handler(const struct ctl_table *ro_table, int write,
 					  void *buffer, size_t *lenp,
_

Patches currently in -mm which might be from nathan@kernel.org are

panic-add-panic_sys_info-sysctl-to-take-human-readable-string-parameter-fix.patch