ftrace: Simplify seqfile code

Use seq_release_private().

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4A891AAB.8090701@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 0948634..1993b71 100644 (file)
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1556,17 +1556,6 @@ ftrace_avail_open(struct inode *inode, struct file *file)
        return ret;
 }
 
-int ftrace_avail_release(struct inode *inode, struct file *file)
-{
-       struct seq_file *m = (struct seq_file *)file->private_data;
-       struct ftrace_iterator *iter = m->private;
-
-       seq_release(inode, file);
-       kfree(iter);
-
-       return 0;
-}
-
 static int
 ftrace_failures_open(struct inode *inode, struct file *file)
 {
@@ -2427,14 +2416,14 @@ static const struct file_operations ftrace_avail_fops = {
        .open = ftrace_avail_open,
        .read = seq_read,
        .llseek = seq_lseek,
-       .release = ftrace_avail_release,
+       .release = seq_release_private,
 };
 
 static const struct file_operations ftrace_failures_fops = {
        .open = ftrace_failures_open,
        .read = seq_read,
        .llseek = seq_lseek,
-       .release = ftrace_avail_release,
+       .release = seq_release_private,
 };
 
 static const struct file_operations ftrace_filter_fops = {