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ftrace: Remove unused varible 'ret'

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'ret' in 2 functions are not used. and one of them is a void function.
So remove them to avoid gcc warning:
kernel/trace/ftrace.c:4166:6: warning: variable ‘ret’ set but not used
[-Wunused-but-set-variable]
kernel/trace/ftrace.c:5571:6: warning: variable ‘ret’ set but not used
[-Wunused-but-set-variable]

Link: https://lkml.kernel.org/r/1604674486-52350-1-git-send-email-alex.shi@linux.alibaba.com

Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Alex Shi 2020-11-06 22:54:46 +08:00 committed by Steven Rostedt (VMware)
parent 28575c61ea
commit 045e269c1e
1 changed files with 2 additions and 4 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

6
kernel/trace/ftrace.c
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@ -4162,7 +4162,6 @@ 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);
@ -4215,7 +4214,7 @@ 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);
@ -5567,7 +5566,6 @@ 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;
@ -5595,7 +5593,7 @@ 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 {