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

[Qiheng Lin]

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@xxxxxxxxxx>
---
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