Re: [PATCH v2 1/4] genirq: Walk the irq_data hierarchy when resending an interrupt

Valentin Schneider
2020-09-05T12:58:13Z

On 05/09/20 10:26, Marc Zyngier wrote:
> <random>
> Maybe considering the irqchip stack along a vertical axis is the wrong
> thing to do, and that looking at it as a volume would be marginally
> better?
>
> How about innermost (close to the CPU) vs outermost (close to the
> device)?
> </random>
>

I guess this is fairly subjective, but the inner/outer thing does click
with me.

I think the "issue" with the top / bottom wording is that existing data
structures (domain / irq_data hierarchy) bias my interpretation of it, but
it's upside down from the irq_chip stack representation. That's not the
case of inner / outer where all I can think of is the actual chip layout
(i.e. as an image of the distance from the CPUs).

Anyway, that's enough psychoanalysis from me, the patches look fine - I
also reran my quick rtcwake test on GICv2 (tests the WAKEUP_ARMED
path). Feel free to add

Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>

to 1/4 & 3/4.

> Thanks,
>
> M.