[PATCH 08/10] drm/radeon: replace pflip and sw_int counters with atomics

[Sylvain BERTRAND]

>>>>> Does the linux API mandates atomic_t to be a 32bits word?
>>>>
>>>> AFAIK it is, at least for the platforms we care about.
>>>> ...
>>>
>>> Then, the proper course of action would be to add to the linux API, sized
>>> atomic operation first, wouldn't it?
>>
>> No, atomic is fine for this, I think only sparc32 had 24-bit atomics,
>> and if you can get sparc32 + a radeon,
>> then you can keep both halves.
> 
> And even that is a lie now :-)
> 
> http://lwn.net/Articles/71732/

Ok then: atomic_t means exactly 32 bits!

-- 
Sylvain