RFE: enable uas in 3.15 kernels

[Hans de Goede]

Hi All,

I would like to suggest to enable uas in the 3.15 kernel:
CONFIG_USB_UAS=m

For all platforms. Usb Attached Scsi is a standard, much improved
usb storage protocol allowing the use of NCQ over usb, and slowly
more devices are hitting the market supporting it.

Besides being a whole lot faster, I also put 1.5 months of full-time
work in getting it into shape and getting it of the CONFIG_BROKEN
list upstream, which has now all finally landed.

So I also have a small personal bias towards enabling it :)

Regards,

Hans

[Josh Boyer]

On Thu, May 1, 2014 at 11:17 AM, Hans de Goede  wrote:
> Hi All,
>
> I would like to suggest to enable uas in the 3.15 kernel:
> CONFIG_USB_UAS=m
>
> For all platforms. Usb Attached Scsi is a standard, much improved
> usb storage protocol allowing the use of NCQ over usb, and slowly
> more devices are hitting the market supporting it.
>
> Besides being a whole lot faster, I also put 1.5 months of full-time
> work in getting it into shape and getting it of the CONFIG_BROKEN
> list upstream, which has now all finally landed.

OK, so right now we actually enable it for normal rawhide kernels that
have the debug options set.  Originally we enabled it everywhere, and
that led to a number of machines having issues with the driver causing
hangs and crashes.  We worked out a compromise to leave it enabled in
debug builds until it was stable.

I'm guessing you feel it's stable now.  Would you be willing to handle
bugs if they come in?

josh

[Hans de Goede]

Hi,

On 05/01/2014 05:22 PM, Josh Boyer wrote:
> On Thu, May 1, 2014 at 11:17 AM, Hans de Goede  wrote:
> > Hi All,
> >
> > I would like to suggest to enable uas in the 3.15 kernel:
> > CONFIG_USB_UAS=m
> >
> > For all platforms. Usb Attached Scsi is a standard, much improved
> > usb storage protocol allowing the use of NCQ over usb, and slowly
> > more devices are hitting the market supporting it.
> >
> > Besides being a whole lot faster, I also put 1.5 months of full-time
> > work in getting it into shape and getting it of the CONFIG_BROKEN
> > list upstream, which has now all finally landed.
>
> OK, so right now we actually enable it for normal rawhide kernels that
> have the debug options set.  Originally we enabled it everywhere, and
> that led to a number of machines having issues with the driver causing
> hangs and crashes.  We worked out a compromise to leave it enabled in
> debug builds until it was stable.
>
> I'm guessing you feel it's stable now.  Would you be willing to handle
> bugs if they come in?

Yes (I'm also the upstream maintainer of it).

Regards,

Hans

[Josh Boyer]

On Thu, May 1, 2014 at 11:24 AM, Hans de Goede  wrote:
> Hi,
>
> On 05/01/2014 05:22 PM, Josh Boyer wrote:
> > On Thu, May 1, 2014 at 11:17 AM, Hans de Goede  wrote:
> > > Hi All,
> > >
> > > I would like to suggest to enable uas in the 3.15 kernel:
> > > CONFIG_USB_UAS=m
> > >
> > > For all platforms. Usb Attached Scsi is a standard, much improved
> > > usb storage protocol allowing the use of NCQ over usb, and slowly
> > > more devices are hitting the market supporting it.
> > >
> > > Besides being a whole lot faster, I also put 1.5 months of full-time
> > > work in getting it into shape and getting it of the CONFIG_BROKEN
> > > list upstream, which has now all finally landed.
> >
> > OK, so right now we actually enable it for normal rawhide kernels that
> > have the debug options set.  Originally we enabled it everywhere, and
> > that led to a number of machines having issues with the driver causing
> > hangs and crashes.  We worked out a compromise to leave it enabled in
> > debug builds until it was stable.
> >
> > I'm guessing you feel it's stable now.  Would you be willing to handle
> > bugs if they come in?
>
> Yes (I'm also the upstream maintainer of it).

Awesome.  I'll enable it when I do the next rawhide build.

josh