Commit 18c16c69 authored by Chuck Ebbert's avatar Chuck Ebbert Committed by Jeff Garzik
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[PATCH] loopback: optimize stats 



This patch slightly optimizes the loopback driver's stats update.

Saves two loads, one add and one increment per packet sent.

Signed-off-by: default avatarChuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent d2ae1d2f

drivers/net/loopback.c

+2 −2
Original line number Diff line number Diff line
@@ -151,9 +151,9 @@ static int loopback_xmit(struct sk_buff *skb, struct net_device *dev) 


	lb_stats = &per_cpu(loopback_stats, get_cpu());

	lb_stats->rx_bytes += skb->len;

	lb_stats->tx_bytes += skb->len;

	lb_stats->tx_bytes = lb_stats->rx_bytes;

	lb_stats->rx_packets++;

	lb_stats->tx_packets++;

	lb_stats->tx_packets = lb_stats->rx_packets;

	put_cpu();



	netif_rx(skb);