On Thu, May 24, 2012 at 1:53 PM, Dave Airlie <airlied at gmail.com> wrote: > On Thu, May 24, 2012 at 1:46 PM, Sylvain BERTRAND <sylware at legeek.net> > wrote: >>>> 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/ Dave.