Re: [PATCH 20/32] Blackfin arch: dma_memcpy borken for > 64K

["Mike Frysinger" <vapier.adi@gmail.com>]

On 5/21/07, Pekka Enberg <penberg@cs.helsinki.fi> wrote:
> On 5/21/07, Bryan Wu <bryan.wu@analog.com> wrote:
> > -void *dma_memcpy(void *dest, const void *src, size_t size)
> > +void *_dma_memcpy(void *dest, const void *src, size_t size)
>
> Minor nitpick: the established naming convention is two underscores, not one.

that should be marked as static now actually since the function isnt
for use outside of this file

> > +void *dma_memcpy(void *dest, const void *src, size_t size)
> > +{
> > +       size_t bulk;
> > +       size_t rest;
> > +       void * addr;
> > +
> > +       bulk = (size >> 16) << 16;
>
> I assume this is significantly faster on your architecture than:
>
>    bulk = size & ~0xFFFFUL;
>
> which is more readable?

actually they should get optimized to the same thing
-mike
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/