[RFC] arm: use built-in byte swap function

[Nicolas Pitre]

On Fri, 8 Feb 2013, Woodhouse, David wrote:

> On Fri, 2013-02-08 at 15:04 -0500, Nicolas Pitre wrote:
> > On Fri, 8 Feb 2013, Woodhouse, David wrote:
> > 
> > > On Thu, 2013-02-07 at 18:13 +0000, Russell King - ARM Linux wrote:
> > > > 
> > > > However, the biggest reason not to use libgcc is that we want to control
> > > > what gets used in the kernel - for example, no floating point, and no
> > > > use of 64 x 64bit division.
> > > 
> > > Which is all very sensible. But there's no particular reason we couldn't
> > > add a __bswap[sd]i2 to the kernel's version of libgcc if we wanted to.
> > 
> > Absolutely.
> 
> And then ARM can just set ARCH_USE_BUILTIN_BSWAP like other
> architectures do, right?

If that turns out to be beneficial over what we have now, then yes.
I didn't read back the whole thread to form an opinion though.


Nicolas