linux-kernel - [PATCH -next] ftrace: Use list_move instead of list_del/list

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Message-ID: <20210608031108.2820996-1-libaokun1@huawei.com>
Date:   Tue, 8 Jun 2021 11:11:08 +0800
From:   Baokun Li <libaokun1@...wei.com>
To:     <linux-kernel@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        "Ingo Molnar" <mingo@...hat.com>
CC:     <weiyongjun1@...wei.com>, <yuehaibing@...wei.com>,
        <yangjihong1@...wei.com>, <yukuai3@...wei.com>,
        <libaokun1@...wei.com>, <kernel-janitors@...r.kernel.org>,
        Hulk Robot <hulkci@...wei.com>
Subject: [PATCH -next] ftrace: Use list_move instead of list_del/list_add

Using list_move() instead of list_del() + list_add().

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Baokun Li <libaokun1@...wei.com>
---
 kernel/trace/ftrace.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 2e8a3fde7104..2c0374056637 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4206,8 +4206,7 @@ static void process_mod_list(struct list_head *head, struct ftrace_ops *ops,
 		if (!func) /* warn? */
 			continue;
 
-		list_del(&ftrace_mod->list);
-		list_add(&ftrace_mod->list, &process_mods);
+		list_move(&ftrace_mod->list, &process_mods);
 
 		/* Use the newly allocated func, as it may be "*" */
 		kfree(ftrace_mod->func);