workqueue: Provide destroy_delayed_work_on_stack()

If a delayed or deferrable work is on stack we need to tell debug
objects that we are destroying the timer and the work. Otherwise we
leak the tracking object.

Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Vince Weaver <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>

1 files changed, 7 insertions, 0 deletions

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 82ef9f3b7473..5b690b5a9e74 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -516,6 +516,13 @@ void destroy_work_on_stack(struct work_struct *work)
 }
 EXPORT_SYMBOL_GPL(destroy_work_on_stack);
 
+void destroy_delayed_work_on_stack(struct delayed_work *work)
+{
+	destroy_timer_on_stack(&work->timer);
+	debug_object_free(&work->work, &work_debug_descr);
+}
+EXPORT_SYMBOL_GPL(destroy_delayed_work_on_stack);
+
 #else
 static inline void debug_work_activate(struct work_struct *work) { }
 static inline void debug_work_deactivate(struct work_struct *work) { }