[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: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index c1e3cee..dba7616 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -151,9 +151,9 @@
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);