From 3352a3b20ce880b17f185ad55bf27751f1c8edb9 Mon Sep 17 00:00:00 2001 From: Auke Kok Date: Fri, 26 May 2006 09:35:47 -0700 Subject: [PATCH] ixgb: remove lock access in the fast path This mimics a change made in the e1000 driver that imitates a slick tg3 way of avoiding grabbing the lock around restarting the tx queue. Signed-off-by: Jesse Brandeburg Signed-off-by: Auke Kok Signed-off-by: John Ronciak --- drivers/net/ixgb/ixgb_main.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index b825850..a714c4d 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -1800,13 +1800,13 @@ ixgb_clean_tx_irq(struct ixgb_adapter *adapter) tx_ring->next_to_clean = i; - spin_lock(&adapter->tx_lock); - if(cleaned && netif_queue_stopped(netdev) && netif_carrier_ok(netdev) && - (IXGB_DESC_UNUSED(tx_ring) > IXGB_TX_QUEUE_WAKE)) { - - netif_wake_queue(netdev); + if (unlikely(netif_queue_stopped(netdev))) { + spin_lock(&adapter->tx_lock); + if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev) && + (IXGB_DESC_UNUSED(tx_ring) > IXGB_TX_QUEUE_WAKE)) + netif_wake_queue(netdev); + spin_unlock(&adapter->tx_lock); } - spin_unlock(&adapter->tx_lock); if(adapter->detect_tx_hung) { /* detect a transmit hang in hardware, this serializes the -- 2.7.4