1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index e2eb351d9152..9ca34cddaf6d 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -299,6 +299,21 @@ static inline int __next_wq_cpu(int cpu, const struct cpumask *mask,
 	     (cpu) < WORK_CPU_NONE;					\
 	     (cpu) = __next_wq_cpu((cpu), cpu_possible_mask, (wq)))
 
+#ifdef CONFIG_LOCKDEP
+/**
+ * in_workqueue_context() - in context of specified workqueue?
+ * @wq: the workqueue of interest
+ *
+ * Checks lockdep state to see if the current task is executing from
+ * within a workqueue item.  This function exists only if lockdep is
+ * enabled.
+ */
+int in_workqueue_context(struct workqueue_struct *wq)
+{
+	return lock_is_held(&wq->lockdep_map);
+}
+#endif
+
 #ifdef CONFIG_DEBUG_OBJECTS_WORK
 
 static struct debug_obj_descr work_debug_descr;