Re: [PATCH 1/2] dma: Add interface to calculate data transferred

Greg KH
2013-10-16T14:11:48Z

On Wed, Oct 16, 2013 at 09:13:20AM +0000, Shevchenko, Andriy wrote:
> On Wed, 2013-10-16 at 13:27 +0530, Vinod Koul wrote:
> > On Wed, Oct 16, 2013 at 02:06:30PM +0530, Shevchenko, Andriy wrote:
> > > On Wed, 2013-10-16 at 11:08 +0530, Vinod Koul wrote:
>
> []
>
> > > > Well am going to take it a bit further and ask you why do we need the
> > > > /sys/class/dma? I have never used it for slave work.
> > >
> > > How user (who, f.e., would like to run dmatest) will know names of the
> > > channels provided?
> > Ok dmatest requires this, I overlooked that part
> >
> > > How could we see what channels of certain dma controller are requested /
> > > busy from userspace?
> > But do end user care or need to know about this?
>
> The idea is to have some test cases. So, end user probably doesn't
> really need this.

So could this just be debugfs files instead?