linux-kernel - [PATCH v2 -next] x86/kprobes: Remove the unneeded extern keyword

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Message-ID: <20210601063015.27309-1-linqiheng@huawei.com>
Date:   Tue, 1 Jun 2021 14:30:15 +0800
From:   Qiheng Lin <linqiheng@...wei.com>
To:     <tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
        <x86@...nel.org>, <hpa@...or.com>
CC:     <linux-kernel@...r.kernel.org>, Qiheng Lin <linqiheng@...wei.com>
Subject: [PATCH v2 -next] x86/kprobes: Remove the unneeded extern keyword

The function declaration in kprobes.h is already marked extern, so remove
it in the definition.

This problem was caught by the sparse tool:
 function 'arch_unoptimize_kprobes' with external linkage has definition

Signed-off-by: Qiheng Lin <linqiheng@...wei.com>
---
Changes in v2:
 - adjust the subject and commit message

 arch/x86/kernel/kprobes/opt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/kprobes/opt.c b/arch/x86/kernel/kprobes/opt.c
index 71425ebba98a..7d962c884505 100644
--- a/arch/x86/kernel/kprobes/opt.c
+++ b/arch/x86/kernel/kprobes/opt.c
@@ -539,8 +539,8 @@ void arch_unoptimize_kprobe(struct optimized_kprobe *op)
  * Recover original instructions and breakpoints from relative jumps.
  * Caller must call with locking kprobe_mutex.
  */
-extern void arch_unoptimize_kprobes(struct list_head *oplist,
-				    struct list_head *done_list)
+void arch_unoptimize_kprobes(struct list_head *oplist,
+			     struct list_head *done_list)
 {
 	struct optimized_kprobe *op, *tmp;
 
-- 
2.31.1