From: Doug Berger Date: Thu, 23 Apr 2020 23:13:30 +0000 (-0700) Subject: net: systemport: suppress warnings on failed Rx SKB allocations X-Git-Tag: v5.15~3983^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3554e54a46125030c534820c297ed7f6c3907e24;p=platform%2Fkernel%2Flinux-starfive.git net: systemport: suppress warnings on failed Rx SKB allocations The driver is designed to drop Rx packets and reclaim the buffers when an allocation fails, and the network interface needs to safely handle this packet loss. Therefore, an allocation failure of Rx SKBs is relatively benign. However, the output of the warning message occurs with a high scheduling priority that can cause excessive jitter/latency for other high priority processing. This commit suppresses the warning messages to prevent scheduling problems while retaining the failure count in the statistics of the network interface. Signed-off-by: Doug Berger Acked-by: Florian Fainelli Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index c99e5a3..b25356e 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -664,7 +664,8 @@ static struct sk_buff *bcm_sysport_rx_refill(struct bcm_sysport_priv *priv, dma_addr_t mapping; /* Allocate a new SKB for a new packet */ - skb = netdev_alloc_skb(priv->netdev, RX_BUF_LENGTH); + skb = __netdev_alloc_skb(priv->netdev, RX_BUF_LENGTH, + GFP_ATOMIC | __GFP_NOWARN); if (!skb) { priv->mib.alloc_rx_buff_failed++; netif_err(priv, rx_err, ndev, "SKB alloc failed\n");