netdev - Re: [PATCH net-next v6 6/8] virtio_net: rename stat tx

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Date: Wed, 24 Apr 2024 11:55:24 +0800
From: Jason Wang <jasowang@...hat.com>
To: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Cc: netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	"Michael S. Tsirkin" <mst@...hat.com>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
	Jesper Dangaard Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>, 
	Stanislav Fomichev <sdf@...gle.com>, Amritha Nambiar <amritha.nambiar@...el.com>, 
	Larysa Zaremba <larysa.zaremba@...el.com>, Sridhar Samudrala <sridhar.samudrala@...el.com>, 
	Maciej Fijalkowski <maciej.fijalkowski@...el.com>, virtualization@...ts.linux.dev, 
	bpf@...r.kernel.org, Jiri Pirko <jiri@...dia.com>
Subject: Re: [PATCH net-next v6 6/8] virtio_net: rename stat tx_timeout to timeout

On Tue, Apr 23, 2024 at 7:32 PM Xuan Zhuo <xuanzhuo@...ux.alibaba.com> wrote:
>
> Now, we have this:
>
>     tx_queue_0_tx_timeouts
>
> This is used to record the tx schedule timeout.
> But this has two "tx". I think the below is enough.
>
>     tx_queue_0_timeouts
>
> So I rename this field.
>
> Signed-off-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
> Reviewed-by: Jiri Pirko <jiri@...dia.com>
> ---
>  drivers/net/virtio_net.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 8a4d22f5f5b1..51ce2308f4f5 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -87,7 +87,7 @@ struct virtnet_sq_stats {
>         u64_stats_t xdp_tx;
>         u64_stats_t xdp_tx_drops;
>         u64_stats_t kicks;
> -       u64_stats_t tx_timeouts;
> +       u64_stats_t timeouts;
>  };
>
>  struct virtnet_rq_stats {
> @@ -111,7 +111,7 @@ static const struct virtnet_stat_desc virtnet_sq_stats_desc[] = {
>         VIRTNET_SQ_STAT("xdp_tx",       xdp_tx),
>         VIRTNET_SQ_STAT("xdp_tx_drops", xdp_tx_drops),
>         VIRTNET_SQ_STAT("kicks",        kicks),
> -       VIRTNET_SQ_STAT("tx_timeouts",  tx_timeouts),
> +       VIRTNET_SQ_STAT("timeouts",     timeouts),

Not sure if it is too late to do this as it is noticeable by the userspace.

Thanks

>  };
>
>  static const struct virtnet_stat_desc virtnet_rq_stats_desc[] = {
> @@ -2691,7 +2691,7 @@ static void virtnet_stats(struct net_device *dev,
>                         start = u64_stats_fetch_begin(&sq->stats.syncp);
>                         tpackets = u64_stats_read(&sq->stats.packets);
>                         tbytes   = u64_stats_read(&sq->stats.bytes);
> -                       terrors  = u64_stats_read(&sq->stats.tx_timeouts);
> +                       terrors  = u64_stats_read(&sq->stats.timeouts);
>                 } while (u64_stats_fetch_retry(&sq->stats.syncp, start));
>
>                 do {
> @@ -4639,7 +4639,7 @@ static void virtnet_tx_timeout(struct net_device *dev, unsigned int txqueue)
>         struct netdev_queue *txq = netdev_get_tx_queue(dev, txqueue);
>
>         u64_stats_update_begin(&sq->stats.syncp);
> -       u64_stats_inc(&sq->stats.tx_timeouts);
> +       u64_stats_inc(&sq->stats.timeouts);
>         u64_stats_update_end(&sq->stats.syncp);
>
>         netdev_err(dev, "TX timeout on queue: %u, sq: %s, vq: 0x%x, name: %s, %u usecs ago\n",
> --
> 2.32.0.3.g01195cf9f
>