linux-kernel - [PATCH 070/102] drivers: net: ethernet: cpsw: use netif_wake

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Message-Id: <1365414657-29191-71-git-send-email-luis.henriques@canonical.com>
Date:	Mon,  8 Apr 2013 10:50:25 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Mugunthan V N <mugunthanvnm@...com>,
	"David S. Miller" <davem@...emloft.net>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 070/102] drivers: net: ethernet: cpsw: use netif_wake_queue() while restarting tx queue

3.5.7.10 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mugunthan V N <mugunthanvnm@...com>

commit b56d6b3fca6d1214dbc9c5655f26e5d4ec04afc8 upstream.

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@...neider-electric.com>
Suggested-by: Sriramakrishnan A G <srk@...com>
Signed-off-by: Mugunthan V N <mugunthanvnm@...com>
Acked-by: Eric Dumazet <edumazet@...gle.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
[ luis: adjust context ]
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/net/ethernet/ti/cpsw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 6685bbb..310e353 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -249,7 +249,7 @@ void cpsw_tx_handler(void *token, int len, int status)
 	struct cpsw_priv	*priv = netdev_priv(ndev);
 
 	if (unlikely(netif_queue_stopped(ndev)))
-		netif_start_queue(ndev);
+		netif_wake_queue(ndev);
 	priv->stats.tx_packets++;
 	priv->stats.tx_bytes += len;
 	dev_kfree_skb_any(skb);
-- 
1.8.1.2

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