diff options
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/wan | |
parent | 2b0b05ddc04b6d45e71cd36405df512075786f1e (diff) | |
download | kernel_samsung_aries-1ae5dc342ac78d7a42965fd1f323815f6f5ef2c1.zip kernel_samsung_aries-1ae5dc342ac78d7a42965fd1f323815f6f5ef2c1.tar.gz kernel_samsung_aries-1ae5dc342ac78d7a42965fd1f323815f6f5ef2c1.tar.bz2 |
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/wan')
-rw-r--r-- | drivers/net/wan/dscc4.c | 2 | ||||
-rw-r--r-- | drivers/net/wan/hd64570.c | 1 | ||||
-rw-r--r-- | drivers/net/wan/hd64572.c | 1 | ||||
-rw-r--r-- | drivers/net/wan/ixp4xx_hss.c | 1 | ||||
-rw-r--r-- | drivers/net/wan/lmc/lmc_main.c | 6 | ||||
-rw-r--r-- | drivers/net/wan/pc300_drv.c | 3 | ||||
-rw-r--r-- | drivers/net/wan/wanxl.c | 1 |
7 files changed, 3 insertions, 12 deletions
diff --git a/drivers/net/wan/dscc4.c b/drivers/net/wan/dscc4.c index a4859f7..d45b08d 100644 --- a/drivers/net/wan/dscc4.c +++ b/drivers/net/wan/dscc4.c @@ -1175,8 +1175,6 @@ static netdev_tx_t dscc4_start_xmit(struct sk_buff *skb, spin_unlock(&dpriv->lock); #endif - dev->trans_start = jiffies; - if (debug > 2) dscc4_tx_print(dev, dpriv, "Xmit"); /* To be cleaned(unsigned int)/optimized. Later, ok ? */ diff --git a/drivers/net/wan/hd64570.c b/drivers/net/wan/hd64570.c index 4dde2ea..a3ea27c 100644 --- a/drivers/net/wan/hd64570.c +++ b/drivers/net/wan/hd64570.c @@ -658,7 +658,6 @@ static netdev_tx_t sca_xmit(struct sk_buff *skb, struct net_device *dev) #endif writew(len, &desc->len); writeb(ST_TX_EOM, &desc->stat); - dev->trans_start = jiffies; port->txin = next_desc(port, port->txin, 1); sca_outw(desc_offset(port, port->txin, 1), diff --git a/drivers/net/wan/hd64572.c b/drivers/net/wan/hd64572.c index aad9ed4..ea476cb 100644 --- a/drivers/net/wan/hd64572.c +++ b/drivers/net/wan/hd64572.c @@ -585,7 +585,6 @@ static netdev_tx_t sca_xmit(struct sk_buff *skb, struct net_device *dev) writew(len, &desc->len); writeb(ST_TX_EOM, &desc->stat); - dev->trans_start = jiffies; port->txin = (port->txin + 1) % card->tx_ring_buffers; sca_outl(desc_offset(port, port->txin, 1), diff --git a/drivers/net/wan/ixp4xx_hss.c b/drivers/net/wan/ixp4xx_hss.c index 0c2cdde..88e3630 100644 --- a/drivers/net/wan/ixp4xx_hss.c +++ b/drivers/net/wan/ixp4xx_hss.c @@ -891,7 +891,6 @@ static int hss_hdlc_xmit(struct sk_buff *skb, struct net_device *dev) wmb(); queue_put_desc(queue_ids[port->id].tx, tx_desc_phys(port, n), desc); - dev->trans_start = jiffies; if (qmgr_stat_below_low_watermark(txreadyq)) { /* empty */ #if DEBUG_TX diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c index b278503..e2c6f7f 100644 --- a/drivers/net/wan/lmc/lmc_main.c +++ b/drivers/net/wan/lmc/lmc_main.c @@ -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: diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c index 17502d8..c6aa66e 100644 --- a/drivers/net/wan/pc300_drv.c +++ b/drivers/net/wan/pc300_drv.c @@ -1790,7 +1790,7 @@ static void cpc_tx_timeout(struct net_device *dev) cpc_readb(card->hw.falcbase + card->hw.cpld_reg2) & ~(CPLD_REG2_FALC_LED1 << (2 * ch))); } - dev->trans_start = jiffies; + dev->trans_start = jiffies; /* prevent tx timeout */ CPC_UNLOCK(card, flags); netif_wake_queue(dev); } @@ -1849,7 +1849,6 @@ static int cpc_queue_xmit(struct sk_buff *skb, struct net_device *dev) if (d->trace_on) { cpc_trace(dev, skb, 'T'); } - dev->trans_start = jiffies; /* Start transmission */ CPC_LOCK(card, flags); diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c index 541c700..db73a7b 100644 --- a/drivers/net/wan/wanxl.c +++ b/drivers/net/wan/wanxl.c @@ -298,7 +298,6 @@ static netdev_tx_t wanxl_xmit(struct sk_buff *skb, struct net_device *dev) desc->stat = PACKET_FULL; writel(1 << (DOORBELL_TO_CARD_TX_0 + port->node), port->card->plx + PLX_DOORBELL_TO_CARD); - dev->trans_start = jiffies; port->tx_out = (port->tx_out + 1) % TX_BUFFERS; |