[PATCH v2 3/4] mtd: mxc_nand: fix truncate of unaligned oob copying
Baruch Siach
baruch at tkos.co.il
Tue May 12 23:59:22 PDT 2015
Hi Uwe,
On Wed, May 13, 2015 at 08:47:34AM +0200, Uwe Kleine-König wrote:
> On Wed, May 13, 2015 at 09:44:04AM +0300, Baruch Siach wrote:
> > > I thought we could get rid of the memcpy32 variants. Where do we need
> > > memcpy32_* where memcpy16 wouldn't work?
> >
> > memcpy16 should work, but would take twice as much IO/memory accesses. That
> > would definitely affect performance, as this is the flash data read/write hot
> > path. I didn't test, though.
> >
> > Are you sure we want to do that?
> no, I'm not sure. But I think it's worth to test how much performance
> degrades.
That will have to wait a few weeks as I don't have the hardware handy at the
moment.
baruch
--
http://baruch.siach.name/blog/ ~. .~ Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
- baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
More information about the linux-arm-kernel
mailing list