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net: trans_start cleanups

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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>
This commit is contained in:
Eric Dumazet
2010-05-10 05:01:31 -07:00
committed by David S. Miller
parent 2b0b05ddc0
commit 1ae5dc342a
168 changed files with 103 additions and 314 deletions
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6
drivers/net/wan/lmc/lmc_main.c
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@@ -1506,8 +1506,6 @@ static netdev_tx_t lmc_start_xmit(struct sk_buff *skb,
/* send now! */
LMC_CSR_WRITE (sc, csr_txpoll, 0);
dev->trans_start = jiffies;
spin_unlock_irqrestore(&sc->lmc_lock, flags);
lmc_trace(dev, "lmc_start_xmit_out");
@@ -2103,7 +2101,7 @@ static void lmc_driver_timeout(struct net_device *dev)
printk("%s: Xmitter busy|\n", dev->name);
sc->extra_stats.tx_tbusy_calls++;
if (jiffies - dev->trans_start < TX_TIMEOUT)
if (jiffies - dev_trans_start(dev) < TX_TIMEOUT)
goto bug_out;
/*
@@ -2135,7 +2133,7 @@ static void lmc_driver_timeout(struct net_device *dev)
sc->lmc_device->stats.tx_errors++;
sc->extra_stats.tx_ProcTimeout++; /* -baz */
dev->trans_start = jiffies;
dev->trans_start = jiffies; /* prevent tx timeout */
bug_out: