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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-05-10 05:01:31 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-05-10 05:01:31 -0700 |
| commit | 1ae5dc342ac78d7a42965fd1f323815f6f5ef2c1 (patch) | |
| tree | d1955a7639e99832590df26466a34d5786a880ae /drivers/net/can | |
| parent | 2b0b05ddc04b6d45e71cd36405df512075786f1e (diff) | |
| download | op-kernel-dev-1ae5dc342ac78d7a42965fd1f323815f6f5ef2c1.zip op-kernel-dev-1ae5dc342ac78d7a42965fd1f323815f6f5ef2c1.tar.gz | |
net: trans_start cleanups
Now that core network takes care of trans_start updates, dont do it
in drivers themselves, if possible. Drivers can avoid one cache miss
(on dev->trans_start) in their start_xmit() handler.
Exceptions are NETIF_F_LLTX drivers
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/at91_can.c | 1 | ||||
| -rw-r--r-- | drivers/net/can/bfin_can.c | 2 | ||||
| -rw-r--r-- | drivers/net/can/mcp251x.c | 1 | ||||
| -rw-r--r-- | drivers/net/can/sja1000/sja1000.c | 2 |
4 files changed, 0 insertions, 6 deletions
diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 5f98348..2d8bd86 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -375,7 +375,6 @@ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev) at91_write(priv, AT91_MCR(mb), reg_mcr); stats->tx_bytes += cf->can_dlc; - dev->trans_start = jiffies; /* _NOTE_: substract AT91_MB_TX_FIRST offset from mb! */ can_put_echo_skb(skb, dev, mb - AT91_MB_TX_FIRST); diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c index d77264a..b6e890d 100644 --- a/drivers/net/can/bfin_can.c +++ b/drivers/net/can/bfin_can.c @@ -269,8 +269,6 @@ static int bfin_can_start_xmit(struct sk_buff *skb, struct net_device *dev) /* fill data length code */ bfin_write16(®->chl[TRANSMIT_CHL].dlc, dlc); - dev->trans_start = jiffies; - can_put_echo_skb(skb, dev, 0); /* set transmit request */ diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c index 8431eb0..b11a0cb 100644 --- a/drivers/net/can/mcp251x.c +++ b/drivers/net/can/mcp251x.c @@ -475,7 +475,6 @@ static netdev_tx_t mcp251x_hard_start_xmit(struct sk_buff *skb, netif_stop_queue(net); priv->tx_skb = skb; - net->trans_start = jiffies; queue_work(priv->wq, &priv->tx_work); return NETDEV_TX_OK; diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c index 618c112..24b5861 100644 --- a/drivers/net/can/sja1000/sja1000.c +++ b/drivers/net/can/sja1000/sja1000.c @@ -292,8 +292,6 @@ static netdev_tx_t sja1000_start_xmit(struct sk_buff *skb, for (i = 0; i < dlc; i++) priv->write_reg(priv, dreg++, cf->data[i]); - dev->trans_start = jiffies; - can_put_echo_skb(skb, dev, 0); priv->write_reg(priv, REG_CMR, CMD_TR); |
