rcu_preempt_need_deferred_qs
} else if (rcu_preempt_need_deferred_qs(current)) {
static bool rcu_preempt_need_deferred_qs(struct task_struct *t);
if (!rcu_preempt_need_deferred_qs(t))
if (rcu_preempt_need_deferred_qs(t))
} else if (rcu_preempt_need_deferred_qs(t)) {