提交 466bd303 编写于 作者: Y Yong Zhang 提交者: Thomas Gleixner

timer: Warn when del_timer_sync() is called in hardirq context

Add explict warning when del_timer_sync() is called in hardirq
context.
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: NOleg Nesterov <oleg@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
上级 1118e2cd
......@@ -974,7 +974,11 @@ int del_timer_sync(struct timer_list *timer)
lock_map_release(&timer->lockdep_map);
local_bh_enable();
#endif
/*
* don't use it in hardirq context, because it
* could lead to deadlock.
*/
WARN_ON(in_irq());
for (;;) {
int ret = try_to_del_timer_sync(timer);
if (ret >= 0)
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册