lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

net: dont update dev->trans_start in 10GB drivers

Browse Source 
Followup of commits 9d21493b4b
and 08baf56108
(net: tx scalability works : trans_start)
(net: txq_trans_update() helper)

Now that core network takes care of trans_start updates, dont do it
in drivers themselves, if possible. Multi queue drivers can
avoid one cache miss (on dev->trans_start) in their start_xmit()
handler.

Exceptions are NETIF_F_LLTX drivers (vxge & tehuti)

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
2009-05-27 19:26:37 +00:00
committed by David S. Miller
parent 3f1f39c42b
commit 28679751a9
16 changed files with 8 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/sfc/selftest.c
View File

@@ -438,6 +438,7 @@ static int efx_begin_loopback(struct efx_tx_queue *tx_queue)
kfree_skb(skb);
return -EPIPE;
}
efx->net_dev->trans_start = jiffies;
}
return 0;

7
drivers/net/sfc/tx.c
View File

@@ -360,13 +360,6 @@ inline int efx_xmit(struct efx_nic *efx,
/* Map fragments for DMA and add to TX queue */
rc = efx_enqueue_skb(tx_queue, skb);
if (unlikely(rc != NETDEV_TX_OK))
goto out;
/* Update last TX timer */
efx->net_dev->trans_start = jiffies;
out:
return rc;
}