linux-kernel - [PATCH] ftrace: remove unused variables

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Message-Id: <1579586072-45047-1-git-send-email-alex.shi@linux.alibaba.com>
Date:   Tue, 21 Jan 2020 13:54:32 +0800
From:   Alex Shi <alex.shi@...ux.alibaba.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] ftrace: remove unused variables

No body care 'ret' in their functions. So better to remove them.

Signed-off-by: Alex Shi <alex.shi@...ux.alibaba.com>
Cc: Steven Rostedt <rostedt@...dmis.org> 
Cc: Ingo Molnar <mingo@...hat.com> 
Cc: linux-kernel@...r.kernel.org 
---
 kernel/trace/ftrace.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 9bf1f2cd515e..3826bad33c87 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4113,7 +4113,6 @@ static void process_mod_list(struct list_head *head, struct ftrace_ops *ops,
 	struct ftrace_hash **orig_hash, *new_hash;
 	LIST_HEAD(process_mods);
 	char *func;
-	int ret;
 
 	mutex_lock(&ops->func_hash->regex_lock);
 
@@ -4166,7 +4165,7 @@ static void process_mod_list(struct list_head *head, struct ftrace_ops *ops,
 
 	mutex_lock(&ftrace_lock);
 
-	ret = ftrace_hash_move_and_update_ops(ops, orig_hash,
+	ftrace_hash_move_and_update_ops(ops, orig_hash,
 					      new_hash, enable);
 	mutex_unlock(&ftrace_lock);
 
@@ -5517,7 +5516,6 @@ int ftrace_regex_release(struct inode *inode, struct file *file)
 	struct ftrace_hash **orig_hash;
 	struct trace_parser *parser;
 	int filter_hash;
-	int ret;
 
 	if (file->f_mode & FMODE_READ) {
 		iter = m->private;
@@ -5545,7 +5543,7 @@ int ftrace_regex_release(struct inode *inode, struct file *file)
 			orig_hash = &iter->ops->func_hash->notrace_hash;
 
 		mutex_lock(&ftrace_lock);
-		ret = ftrace_hash_move_and_update_ops(iter->ops, orig_hash,
+		ftrace_hash_move_and_update_ops(iter->ops, orig_hash,
 						      iter->hash, filter_hash);
 		mutex_unlock(&ftrace_lock);
 	} else {
-- 
1.8.3.1