linux-kernel - [PATCH wq/for-next 1/2] workqueue: let subsystem core create the cpumask attribute

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Date:   Mon,  7 Jun 2021 11:44:19 +0200
From:   Julian Wiedmann <jwi@...ux.ibm.com>
To:     Tejun Heo <tj@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Julian Wiedmann <jwi@...ux.ibm.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH wq/for-next 1/2] workqueue: let subsystem core create the cpumask attribute

Wrap the cpumask attribute in an ATTRIBUTE_GROUPS() macro, so that
subsys_virtual_register() can add it to the dev_root device for us.

Signed-off-by: Julian Wiedmann <jwi@...ux.ibm.com>
---
 kernel/workqueue.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 104e3ef04e33..817dc2d7438a 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5625,15 +5625,15 @@ static struct device_attribute wq_sysfs_cpumask_attr =
 	__ATTR(cpumask, 0644, wq_unbound_cpumask_show,
 	       wq_unbound_cpumask_store);
 
+static struct attribute *wq_sysfs_dev_root_attrs[] = {
+	&wq_sysfs_cpumask_attr.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(wq_sysfs_dev_root);
+
 static int __init wq_sysfs_init(void)
 {
-	int err;
-
-	err = subsys_virtual_register(&wq_subsys, NULL);
-	if (err)
-		return err;
-
-	return device_create_file(wq_subsys.dev_root, &wq_sysfs_cpumask_attr);
+	return subsys_virtual_register(&wq_subsys, wq_sysfs_dev_root_groups);
 }
 core_initcall(wq_sysfs_init);
 
-- 
2.25.1