From: Doug Berger opendmb@gmail.com
[ Upstream commit 3554e54a46125030c534820c297ed7f6c3907e24 ]
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 opendmb@gmail.com Acked-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/broadcom/bcmsysport.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -504,7 +504,8 @@ static struct sk_buff *bcm_sysport_rx_re 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");