netdev - [PATCH] net: use unlikely for dql

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190925024043.31030-1-xiaolinkui@kylinos.cn>
Date:   Wed, 25 Sep 2019 10:40:43 +0800
From:   xiaolinkui <xiaolinkui@...inos.cn>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, xiaolinkui <xiaolinkui@...inos.cn>
Subject: [PATCH] net: use unlikely for dql_avail case

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

Signed-off-by: xiaolinkui <xiaolinkui@...inos.cn>
---
 include/linux/netdevice.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 88292953aa6f..005f3da1b13d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3270,7 +3270,7 @@ 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))
-- 
2.17.1