linux-kernel - [PATCH] sched/debug: use DEFINE_SHOW_ATTRIBUTE to simplify sd

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Date:   Thu, 22 Sep 2022 22:23:47 +0800
From:   Liu Shixin <liushixin2@...wei.com>
To:     Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>,
        "Mel Gorman" <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Valentin Schneider <vschneid@...hat.com>
CC:     <linux-kernel@...r.kernel.org>, Liu Shixin <liushixin2@...wei.com>
Subject: [PATCH] sched/debug: use DEFINE_SHOW_ATTRIBUTE to simplify sd_flags

Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
No functional change.

Signed-off-by: Liu Shixin <liushixin2@...wei.com>
---
 kernel/sched/debug.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 1637b65ba07a..45bc496c116e 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -360,18 +360,7 @@ static int sd_flags_show(struct seq_file *m, void *v)
 
 	return 0;
 }
-
-static int sd_flags_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, sd_flags_show, inode->i_private);
-}
-
-static const struct file_operations sd_flags_fops = {
-	.open		= sd_flags_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(sd_flags);
 
 static void register_sd(struct sched_domain *sd, struct dentry *parent)
 {
-- 
2.25.1