Re: [net-next rfc v7 1/3] virtio-net: separate fields of sending/receiving queue from virtnet_info

Michael S. Tsirkin
2012-12-03T11:18:48Z

On Mon, Dec 03, 2012 at 01:15:01PM +0800, Jason Wang wrote:
> > > +
>
> > > + /* Work struct for refilling if we run low on memory. */
>
> > > + struct delayed_work refill;
>
> >
>
> > I can't really see the justificaiton for a refill per queue. Just have
>
> > one work iterate all the queues if it happens, unless it happens often
>
> > (in which case, we need to look harder at this anyway).
>
>
>
> But during this kind of iteration, we may need enable/disable the napi
> regardless of whether the receive queue has lots to be refilled. This may add
> extra latency.

We are running from the timer, so latency is not a concern I think.

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MST