diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 0400553..d86d61f 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3069,6 +3069,32 @@
 EXPORT_SYMBOL_GPL(destroy_workqueue);
 
 /**
+ * workqueue_empty - test whether a workqueue is empty
+ * @wq: target workqueue
+ *
+ * Test whether @wq's cpu workqueue(s) are empty.
+ *
+ * Returns:	false - workqueue is not empty
+ *		true  - workqueue is empty
+ */
+bool workqueue_empty(struct workqueue_struct *wq)
+{
+	int cpu;
+
+	for_each_cwq_cpu(cpu, wq) {
+		struct cpu_workqueue_struct *cwq = get_cwq(cpu, wq);
+
+		if (!cwq->nr_active && list_empty(&cwq->delayed_works))
+			continue;
+
+		return false;
+	}
+
+	return true;
+}
+EXPORT_SYMBOL_GPL(workqueue_empty);
+
+/**
  * workqueue_set_max_active - adjust max_active of a workqueue
  * @wq: target workqueue
  * @max_active: new max_active value.