netdev - [PATCH net-next 7/9] net: openvswitch: add likely in flow

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Date:   Mon, 30 Sep 2019 01:10:04 +0800
From:   xiangxia.m.yue@...il.com
To:     gvrose8192@...il.com, pshelar@....org
Cc:     netdev@...r.kernel.org, Tonghao Zhang <xiangxia.m.yue@...il.com>
Subject: [PATCH net-next 7/9] net: openvswitch: add likely in flow_lookup

From: Tonghao Zhang <xiangxia.m.yue@...il.com>

The most case *index < ma->max, we add likely for performance.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@...il.com>
---
 net/openvswitch/flow_table.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
index c8e79c1..c21fd52 100644
--- a/net/openvswitch/flow_table.c
+++ b/net/openvswitch/flow_table.c
@@ -526,7 +526,7 @@ static struct sw_flow *flow_lookup(struct flow_table *tbl,
 	struct sw_flow_mask *mask;
 	int i;
 
-	if (*index < ma->max) {
+	if (likely(*index < ma->max)) {
 		mask = rcu_dereference_ovsl(ma->masks[*index]);
 		if (mask) {
 			flow = masked_flow_lookup(ti, key, mask, n_mask_hit);
-- 
1.8.3.1