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

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Message-ID: <20151125205603.GB20267@x230.dumpdata.com>
Date:	Wed, 25 Nov 2015 15:56:03 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Bob Liu <bob.liu@...cle.com>
Cc:	xen-devel@...ts.xen.org, linux-kernel@...r.kernel.org,
	roger.pau@...rix.com, felipe.franciosi@...rix.com, axboe@...com,
	avanzini.arianna@...il.com, rafal.mielniczuk@...rix.com,
	jonathan.davies@...rix.com, david.vrabel@...rix.com
Subject: Re: [PATCH v5 00/10] xen-block: multi hardware-queues/rings support

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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