Re: [PATCH v2 4/4] rv/rtapp: Add wakeup monitor

[Chao Liu]

On Wed, Jul 22, 2026 at 09:42:59AM +0800, Nam Cao wrote:
> Chao Liu <chao.liu@xxxxxxxxxxxxxxxxxx> writes:
> >> +static void handle_sched_waking(void *data, struct task_struct *task)
> >> +{
> >> +	if (in_task()) {
> >> +		if (current->prio > task->prio)
> >> +			ltl_atom_pulse(task, LTL_WOKEN_BY_LOWER_PRIO, true);
> >
> > The implementation also reports wakeups from softirq context through
> > WOKEN_BY_SOFTIRQ:
> >
> >> +	} else if (in_serving_softirq()) {
> >> +		ltl_atom_pulse(task, LTL_WOKEN_BY_SOFTIRQ, true);
> >> +	}
> >
> > Should this description mention softirq wakeups as well?
> 
> Technically, on RT kernel, softirq is a SCHED_OTHER task. On !RT kernel,
> softirq can also be executed as a SCHED_OTHER task, which is the cause
> for concern.
> 
> But explicitly mentioning softirq does not hurt, I wouldn't oppose that.
Thanks for the clarification. I understand it better now.

Thanks,
Chao
> 
> Nam