On Wed, Jan 13, 2010 at 05:44:38PM -0800, Ping wrote:
> On Wed, Jan 13, 2010 at 3:30 PM, Peter Hutterer
> <peter.hutte...@who-t.net> wrote:
> > On Wed, Jan 13, 2010 at 06:03:41PM +1030, Ron wrote:
> >> The floating point operations may be a killer on platforms like ARM,
> >> that mostly don't have an FPU still.  So it may be worth keeping both,
> >> or adding a fixed-point version of it too.
> >
> >> But it's always worth profiling these on modern systems now.  There
> >> are quite a few things that it is now cheaper to calculate than it is
> >> to stall the pipeline and drag a table into cache.
> >>
> >> That can be quite unintuitive to people who remember just how many cycles
> >> some of these operations do take to perform ;)
> >
> > I wonder how many ARM users use wacom tablets?
> 
> We don't need to worry about ARM support with this driver.  As far as
> I know, ARM and other embedded systems don't use this driver (I've
> worked on a few and I am working on one now :).

They make them multi-core/multi-GHz now, with PCIe lanes :)
They're going in the little netbooks, so I imagine a tablet isn't
far away if not already done too.

I have a couple here I could reasonably plug my tablet into, but
that's also not something I _need_ to do right now.  So if nobody
shakes out to actually do the benchmarks and complain about the
results, it's easy to leave this on the shelf until it is needed.

I'd still be curious to see this benchmarked on other arches though,
if someone has the itch for a thing like that.

  Ron



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