linux-kernel - [PATCH V2 1/5] workqueue: Register sysfs after the whole creation of the new wq

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Message-Id: <20240704034915.2164-2-jiangshanlai@gmail.com>
Date: Thu,  4 Jul 2024 11:49:10 +0800
From: Lai Jiangshan <jiangshanlai@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Lai Jiangshan <jiangshan.ljs@...group.com>,
	Tejun Heo <tj@...nel.org>,
	Lai Jiangshan <jiangshanlai@...il.com>
Subject: [PATCH V2 1/5] workqueue: Register sysfs after the whole creation of the new wq

From: Lai Jiangshan <jiangshan.ljs@...group.com>

workqueue creation includes adding it to the workqueue list.

Prepare for moving the whole workqueue initializing procedure into
wq_pool_mutex and cpu hotplug locks.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@...group.com>
---
 kernel/workqueue.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index a38a67ac4e80..904a1a6808b7 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5693,9 +5693,6 @@ struct workqueue_struct *alloc_workqueue(const char *fmt,
 	if (wq_online && init_rescuer(wq) < 0)
 		goto err_destroy;
 
-	if ((wq->flags & WQ_SYSFS) && workqueue_sysfs_register(wq))
-		goto err_destroy;
-
 	/*
 	 * wq_pool_mutex protects global freeze state and workqueues list.
 	 * Grab it, adjust max_active and add the new @wq to workqueues
@@ -5711,6 +5708,9 @@ struct workqueue_struct *alloc_workqueue(const char *fmt,
 
 	mutex_unlock(&wq_pool_mutex);
 
+	if ((wq->flags & WQ_SYSFS) && workqueue_sysfs_register(wq))
+		goto err_destroy;
+
 	return wq;
 
 err_free_node_nr_active:
-- 
2.19.1.6.gb485710b