3.8: davinci emac optimization

beagleboard · Apr 4, 2013 · 558b217 · 558b217
1 parent 7f0f842
commit 558b217
Showing 1 changed file with 35 additions and 0 deletions.
diff --git a/patches/net/0004-drivers-net-ethernet-davinci_emac-use-netif_wake_que.patch b/patches/net/0004-drivers-net-ethernet-davinci_emac-use-netif_wake_que.patch
@@ -0,0 +1,35 @@
+From 6b39fbb57748a5d5a69907688e7fb8058d4d2e0b Mon Sep 17 00:00:00 2001
+From: Mugunthan V N <mugunthanvnm@ti.com>
+Date: Wed, 27 Mar 2013 04:42:00 +0000
+Subject: [PATCH 4/4] drivers: net: ethernet: davinci_emac: use
+ netif_wake_queue() while restarting tx queue
+
+To restart tx queue use netif_wake_queue() intead of netif_start_queue()
+so that net schedule will restart transmission immediately which will
+increase network performance while doing huge data transfers.
+
+Reported-by: Dan Franke <dan.franke@schneider-electric.com>
+Suggested-by: Sriramakrishnan A G <srk@ti.com>
+Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
+Acked-by: Eric Dumazet <edumazet@google.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/ti/davinci_emac.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
+index 2a3e2c5..4ebcb24 100644
+--- a/drivers/net/ethernet/ti/davinci_emac.c
++++ b/drivers/net/ethernet/ti/davinci_emac.c
+@@ -1055,7 +1055,7 @@ static void emac_tx_handler(void *token, int len, int status)
+ 	atomic_dec(&priv->cur_tx);
+
+ 	if (unlikely(netif_queue_stopped(ndev)))
+-		netif_start_queue(ndev);
++		netif_wake_queue(ndev);
+ 	ndev->stats.tx_packets++;
+ 	ndev->stats.tx_bytes += len;
+ 	dev_kfree_skb_any(skb);
+-- 
+1.8.1.4
+