From: Xianting Tian <xianting.tian@linux.alibaba.com>
To: mst@redhat.com, jasowang@redhat.com, davem@davemloft.net,
kuba@kernel.org
Cc: virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] virtio_net: Use BUG_ON instead of if condition followed by BUG
Date: Mon, 17 May 2021 21:31:19 +0800 [thread overview]
Message-ID: <56270996-33a6-d71b-d935-452dad121df7@linux.alibaba.com> (raw)
BUG_ON() uses unlikely in if(), which can be optimized at compile time.
Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
---
drivers/net/virtio_net.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index c921ebf3ae82..212d52204884 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1646,10 +1646,9 @@ static int xmit_skb(struct send_queue *sq, struct
sk_buff *skb)
else
hdr = skb_vnet_hdr(skb);
- if (virtio_net_hdr_from_skb(skb, &hdr->hdr,
+ BUG_ON(virtio_net_hdr_from_skb(skb, &hdr->hdr,
virtio_is_little_endian(vi->vdev), false,
- 0))
- BUG();
+ 0));
if (vi->mergeable_rx_bufs)
hdr->num_buffers = 0;
--
2.17.1
next reply other threads:[~2021-05-17 13:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-17 13:31 Xianting Tian [this message]
2021-05-17 14:35 ` Andrew Lunn
2021-05-18 9:20 ` Xianting Tian
2021-05-17 18:43 ` virtio_net: BQL? Dave Taht
2021-05-17 20:23 ` Willem de Bruijn
2021-05-17 21:48 ` Dave Taht
2021-05-17 23:00 ` [Bloat] " Stephen Hemminger
2021-05-17 23:32 ` Dave Taht
2021-05-18 2:48 ` Stephen Hemminger
2021-05-19 14:31 ` Eric Dumazet
2021-05-19 22:53 ` Jakub Kicinski
2021-05-24 2:53 ` Jason Wang
2021-05-24 9:10 ` Michael S. Tsirkin
2021-05-19 8:35 ` Michael S. Tsirkin
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