netdev - Re: [PATCH net-next v2 07/12] net: remove the xps possible

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Date:   Tue, 09 Feb 2021 09:47:15 +0100
From:   Antoine Tenart <atenart@...nel.org>
To:     Alexander Duyck <alexander.duyck@...il.com>
Cc:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next v2 07/12] net: remove the xps possible_mask

Quoting Alexander Duyck (2021-02-08 22:43:39)
> On Mon, Feb 8, 2021 at 9:19 AM Antoine Tenart <atenart@...nel.org> wrote:
> >
> > -static void clean_xps_maps(struct net_device *dev, const unsigned long *mask,
> > +static void clean_xps_maps(struct net_device *dev,
> >                            struct xps_dev_maps *dev_maps, u16 offset, u16 count,
> >                            bool is_rxqs_map)
> >  {
> > -       unsigned int nr_ids = dev_maps->nr_ids;
> >         bool active = false;
> >         int i, j;
> >
> > -       for (j = -1; j = netif_attrmask_next(j, mask, nr_ids), j < nr_ids;)
> > -               active |= remove_xps_queue_cpu(dev, dev_maps, j, offset,
> > -                                              count);
> > +       for (j = 0; j < dev_maps->nr_ids; j++)
> > +               active |= remove_xps_queue_cpu(dev, dev_maps, j, offset, count);
> >         if (!active)
> >                 reset_xps_maps(dev, dev_maps, is_rxqs_map);
> >
> > -       if (!is_rxqs_map) {
> > -               for (i = offset + (count - 1); count--; i--) {
> > +       if (!is_rxqs_map)
> > +               for (i = offset + (count - 1); count--; i--)
> >                         netdev_queue_numa_node_write(
> > -                               netdev_get_tx_queue(dev, i),
> > -                               NUMA_NO_NODE);
> > -               }
> > -       }
> > +                               netdev_get_tx_queue(dev, i), NUMA_NO_NODE);
> >  }
> 
> This violates the coding-style guide for the kernel. The if statement
> should still have braces as the for loop and
> netdev_queue_numa_node_write are more than a single statement. I'd be
> curious to see if checkpatch also complains about this because it
> probably should.

You're right, I'll remove that change to comply with the coding style.

I reran checkpatch, even with --strict, and it did not complain. Maybe
because it's a rework, not strictly new code.

Thanks,
Antoine