diff mbox series

[net-next,7/7] net: openvswitch: add likely in flow_lookup

Message ID 1568912093-68535-8-git-send-email-xiangxia.m.yue@gmail.com
State Deferred
Delegated to: David Miller
Headers show
Series optimize openvswitch flow looking up | expand

Commit Message

Tonghao Zhang Sept. 19, 2019, 4:54 p.m. UTC 
From: Tonghao Zhang <xiangxia.m.yue@gmail.com>

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

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

Patch

diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
index 223470a..bd7e976 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);