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IPoIB: Add some likely/unlikely annotations in hot path 

Signed-off-by: Eli Cohen <eli@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eli Cohen 2006-09-22 15:22:58 -07:00 committed by Roland Dreier
parent 507c335046
commit a8bfca0243
2 changed files with 3 additions and 3 deletions
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2
drivers/infiniband/ulp/ipoib/ipoib_ib.c
View File

@ -332,7 +332,7 @@ void ipoib_send(struct net_device *dev, struct sk_buff *skb,
struct ipoib_tx_buf *tx_req;
dma_addr_t addr;
if (skb->len > dev->mtu + INFINIBAND_ALEN) {
if (unlikely(skb->len > dev->mtu + INFINIBAND_ALEN)) {
ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n",
skb->len, dev->mtu + INFINIBAND_ALEN);
++priv->stats.tx_dropped;

4
drivers/infiniband/ulp/ipoib/ipoib_main.c
View File

@ -620,7 +620,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct ipoib_neigh *neigh;
unsigned long flags;
if (!spin_trylock_irqsave(&priv->tx_lock, flags))
if (unlikely(!spin_trylock_irqsave(&priv->tx_lock, flags)))
return NETDEV_TX_LOCKED;
/*
@ -633,7 +633,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_BUSY;
}
if (skb->dst && skb->dst->neighbour) {
if (likely(skb->dst && skb->dst->neighbour)) {
if (unlikely(!*to_ipoib_neigh(skb->dst->neighbour))) {
ipoib_path_lookup(skb, dev);
goto out;