linux-kernel - [RFC PATCH V5 2/5] workqueue: expose attrs for system workqueues

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Message-Id: <1517030127-21391-2-git-send-email-wen.yang99@zte.com.cn>
Date:   Sat, 27 Jan 2018 13:15:24 +0800
From:   Wen Yang <wen.yang99@....com.cn>
To:     tj@...nel.org
Cc:     zhong.weidong@....com.cn, wen.yang99@....com.cn,
        Jiang Biao <jiang.biao2@....com.cn>,
        Tan Hu <tan.hu@....com.cn>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        kernel test robot <xiaolong.ye@...el.com>,
        linux-kernel@...r.kernel.org
Subject: [RFC PATCH V5 2/5] workqueue: expose attrs for system workqueues

Signed-off-by: Wen Yang <wen.yang99@....com.cn>
Signed-off-by: Jiang Biao <jiang.biao2@....com.cn>
Signed-off-by: Tan Hu <tan.hu@....com.cn>
Suggested-by: Tejun Heo <tj@...nel.org>
Cc: Tejun Heo <tj@...nel.org>
Cc: Lai Jiangshan <jiangshanlai@...il.com>
Cc: kernel test robot <xiaolong.ye@...el.com>
Cc: linux-kernel@...r.kernel.org
---
 kernel/workqueue.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 67b68bb..d5a5c76 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5254,7 +5254,11 @@ static int __init wq_sysfs_init(void)
 	if (err)
 		return err;
 
-	return device_create_file(wq_subsys.dev_root, &wq_sysfs_cpumask_attr);
+	err = device_create_file(wq_subsys.dev_root, &wq_sysfs_cpumask_attr);
+	if (err)
+		return err;
+	return workqueue_sysfs_register(system_wq) ||
+		workqueue_sysfs_register(system_highpri_wq);
 }
 core_initcall(wq_sysfs_init);
 
-- 
1.8.3.1