Re: [PATCH v5 00/10] xen-block: multi hardware-queues/rings support

[Konrad Rzeszutek Wilk]

On Wed, Nov 25, 2015 at 02:25:07PM -0500, Konrad Rzeszutek Wilk wrote:
> >   xen/blkback: separate ring information out of struct xen_blkif
> >   xen/blkback: pseudo support for multi hardware queues/rings
> >   xen/blkback: get the number of hardware queues/rings from blkfront
> >   xen/blkback: make pool of persistent grants and free pages per-queue
> 
> OK, got to those as well. I have put them in 'devel/for-jens-4.5' and
> are going to test them overnight before pushing them out.
> 
> I see two bugs in the code that we MUST deal with:
> 
>  - print_stats () is going to show zero values.
>  - the sysfs code (VBD_SHOW) aren't converted over to fetch data
>    from all the rings.

- kthread_run can't handle the two "name, i" arguments. I see:

root      5101     2  0 20:47 ?        00:00:00 [blkback.3.xvda-]
root      5102     2  0 20:47 ?        00:00:00 [blkback.3.xvda-]


> 
> > 
> >  drivers/block/xen-blkback/blkback.c | 386 ++++++++++---------
> >  drivers/block/xen-blkback/common.h  |  78 ++--
> >  drivers/block/xen-blkback/xenbus.c  | 359 ++++++++++++------
> >  drivers/block/xen-blkfront.c        | 718 ++++++++++++++++++++++--------------
> >  include/xen/interface/io/blkif.h    |  48 +++
> >  5 files changed, 971 insertions(+), 618 deletions(-)
> > 
> > -- 
> > 1.8.3.1
> > 
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