On Thu, Sep 30, 2021 at 06:15:47PM +0100, Tvrtko Ursulin wrote:
> void set_user_nice(struct task_struct *p, long nice)
> {
> bool queued, running;
> - int old_prio;
> + int old_prio, ret;
> struct rq_flags rf;
> struct rq *rq;
>
> @@ -6913,6 +6945,9 @@ void set_user_nice(struct task_struct *p, long nice)
> */
> p->sched_class->prio_changed(rq, p, old_prio);
>
> + ret = atomic_notifier_call_chain(&user_nice_notifier_list, nice, p);
> + WARN_ON_ONCE(ret != NOTIFY_DONE);
> +
> out_unlock:
> task_rq_unlock(rq, p, &rf);
> }
No, we're not going to call out to exported, and potentially unbounded,
functions under scheduler locks.
