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tracing: Switch trace_recursion_record.c code over to use guard()

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Switch mutex_lock()/mutex_unlock() to guard().
also drop the ret local variable and return directly.

Link: https://patch.msgid.link/20260502174741.39636-1-yashsuthar983@gmail.com
Signed-off-by: Yash Suthar <yashsuthar983@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Yash Suthar
2026-05-02 23:17:41 +05:30
committed by Steven Rostedt
parent 04fcbcf2df
commit 8a6e9af2fa
1 changed files with 3 additions and 5 deletions
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8
kernel/trace/trace_recursion_record.c
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@@ -180,9 +180,8 @@ static const struct seq_operations recursed_function_seq_ops = {
static int recursed_function_open(struct inode *inode, struct file *file)
{
int ret = 0;
guard(mutex)(&recursed_function_lock);
mutex_lock(&recursed_function_lock);
/* If this file was opened for write, then erase contents */
if ((file->f_mode & FMODE_WRITE) && (file->f_flags & O_TRUNC)) {
/* disable updating records */
@@ -194,10 +193,9 @@ static int recursed_function_open(struct inode *inode, struct file *file)
atomic_set(&nr_records, 0);
}
if (file->f_mode & FMODE_READ)
ret = seq_open(file, &recursed_function_seq_ops);
mutex_unlock(&recursed_function_lock);
return seq_open(file, &recursed_function_seq_ops);
return ret;
return 0;
}
static ssize_t recursed_function_write(struct file *file,