On Thu, Dec 10 2020 at 17:09, Tvrtko Ursulin wrote:
> On 10/12/2020 16:35, Thomas Gleixner wrote:
>> I'll send out a series addressing irq_to_desc() (ab)use all over the
>> place shortly. i915 is in there...
>
> Yep we don't need atomic, my bad. And we would care about the shared
> interrupt line. And without atomic the extra accounting falls way below
> noise.
You have to be careful though. If you make the accumulated counter 64
bit wide then you need to be careful vs. 32bit machines.
> So in the light of it all, it sounds best I just quickly replace our
> abuse with private counting and then you don't have to deal with it in
> your series.
I mostly have it. Still chewing on the 32bit vs. 64bit thing. And
keeping it in my series allows me to remove the export of irq_to_desc()
at the end without waiting for your tree to be merged.
Give me a few.
Thanks,
tglx
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