From: Matthew Brost <matthew.brost@intel.com>
Date: Fri, 9 Aug 2024 22:28:23 +0000 (-0700)
Subject: workqueue: Split alloc_workqueue into internal function and lockdep init
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b188c57af2b5c17a1e8f71a0358f330446a4f788;p=users%2Fjedix%2Flinux-maple.git

workqueue: Split alloc_workqueue into internal function and lockdep init

Will help enable user-defined lockdep maps for workqueues.

Cc: Tejun Heo <tj@kernel.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 80cb0a923046b..3db4703f46523 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5612,9 +5612,9 @@ static void wq_adjust_max_active(struct workqueue_struct *wq)
 }
 
 __printf(1, 4)
-struct workqueue_struct *alloc_workqueue(const char *fmt,
-					 unsigned int flags,
-					 int max_active, ...)
+static struct workqueue_struct *__alloc_workqueue(const char *fmt,
+						  unsigned int flags,
+						  int max_active, ...)
 {
 	va_list args;
 	struct workqueue_struct *wq;
@@ -5680,12 +5680,11 @@ struct workqueue_struct *alloc_workqueue(const char *fmt,
 	INIT_LIST_HEAD(&wq->flusher_overflow);
 	INIT_LIST_HEAD(&wq->maydays);
 
-	wq_init_lockdep(wq);
 	INIT_LIST_HEAD(&wq->list);
 
 	if (flags & WQ_UNBOUND) {
 		if (alloc_node_nr_active(wq->node_nr_active) < 0)
-			goto err_unreg_lockdep;
+			goto err_free_wq;
 	}
 
 	/*
@@ -5724,9 +5723,6 @@ err_unlock_free_node_nr_active:
 		kthread_flush_worker(pwq_release_worker);
 		free_node_nr_active(wq->node_nr_active);
 	}
-err_unreg_lockdep:
-	wq_unregister_lockdep(wq);
-	wq_free_lockdep(wq);
 err_free_wq:
 	free_workqueue_attrs(wq->unbound_attrs);
 	kfree(wq);
@@ -5737,6 +5733,25 @@ err_destroy:
 	destroy_workqueue(wq);
 	return NULL;
 }
+
+__printf(1, 4)
+struct workqueue_struct *alloc_workqueue(const char *fmt,
+					 unsigned int flags,
+					 int max_active, ...)
+{
+	struct workqueue_struct *wq;
+	va_list args;
+
+	va_start(args, max_active);
+	wq = __alloc_workqueue(fmt, flags, max_active, args);
+	va_end(args);
+	if (!wq)
+		return NULL;
+
+	wq_init_lockdep(wq);
+
+	return wq;
+}
 EXPORT_SYMBOL_GPL(alloc_workqueue);
 
 static bool pwq_busy(struct pool_workqueue *pwq)