kthread_delayed_work_timer_fn
void kthread_delayed_work_timer_fn(struct timer_list *t);
.timer = __TIMER_INITIALIZER(kthread_delayed_work_timer_fn,\
kthread_delayed_work_timer_fn, \
EXPORT_SYMBOL(kthread_delayed_work_timer_fn);
WARN_ON_ONCE(timer->function != kthread_delayed_work_timer_fn);
TIMER_HINT(kthread_delayed_work_timer_fn,