From f3acd33d840d3ea3e1233d234605c85cbbf26054 Mon Sep 17 00:00:00 2001
From: xiaolinkui <xiaolinkui@kylinos.cn>
Date: Thu, 22 Aug 2019 14:58:16 +0800
Subject: net: use unlikely for dql_avail case

This is an unlikely case, use unlikely() on it seems logical.

Signed-off-by: xiaolinkui <xiaolinkui@kylinos.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/netdevice.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 55ac223553f8..b5d28dadf964 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3272,7 +3272,7 @@ static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue,
 	 */
 	smp_mb();
 
-	if (dql_avail(&dev_queue->dql) < 0)
+	if (unlikely(dql_avail(&dev_queue->dql) < 0))
 		return;
 
 	if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state))
-- 
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