linux-kernel - [RFC PATCH] lib/stackdepot: stack_depot_init

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Message-ID: <20211012215233.GA41525@800d2291961c>
Date:   Wed, 13 Oct 2021 05:52:33 +0800
From:   kernel test robot <lkp@...el.com>
To:     Vlastimil Babka <vbabka@...e.cz>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     kbuild-all@...ts.01.org,
        Linux Memory Management List <linux-mm@...ck.org>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org, kasan-dev@...glegroups.com,
        Vlastimil Babka <vbabka@...e.cz>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Vijayanand Jitta <vjitta@...eaurora.org>
Subject: [RFC PATCH] lib/stackdepot: stack_depot_init_mutex can be static

lib/stackdepot.c:150:1: warning: symbol 'stack_depot_init_mutex' was not declared. Should it be static?

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: kernel test robot <lkp@...el.com>
---
 stackdepot.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/stackdepot.c b/lib/stackdepot.c
index 9bb5333bf02f61..89b67aef9b320b 100644
--- a/lib/stackdepot.c
+++ b/lib/stackdepot.c
@@ -147,7 +147,7 @@ static struct stack_record *depot_alloc_stack(unsigned long *entries, int size,
 #define STACK_HASH_MASK (STACK_HASH_SIZE - 1)
 #define STACK_HASH_SEED 0x9747b28c
 
-DEFINE_MUTEX(stack_depot_init_mutex);
+static DEFINE_MUTEX(stack_depot_init_mutex);
 static bool stack_depot_disable;
 static struct stack_record **stack_table;