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Commit c57c054e authored by Tonghao Zhang's avatar Tonghao Zhang Committed by David S. Miller
Browse files

openvswitch: Optimize updating for OvS flow_stats. 



In the ovs_flow_stats_update(), we only use the node
var to alloc flow_stats struct. But this is not a
common case, it is unnecessary to call the numa_node_id()
everytime. This patch is not a bugfix, but there maybe
a small increase.

Signed-off-by: default avatarTonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6b098a08

net/openvswitch/flow.c

+1 −2
Original line number Diff line number Diff line
@@ -72,7 +72,6 @@ void ovs_flow_stats_update(struct sw_flow *flow, __be16 tcp_flags, 
			   const struct sk_buff *skb)

{

	struct flow_stats *stats;

	int node = numa_node_id();

	int cpu = smp_processor_id();

	int len = skb->len + (skb_vlan_tag_present(skb) ? VLAN_HLEN : 0);
@@ -108,7 +107,7 @@ void ovs_flow_stats_update(struct sw_flow *flow, __be16 tcp_flags, 
							      __GFP_THISNODE |

							      __GFP_NOWARN |

							      __GFP_NOMEMALLOC,

							      node);

							      numa_node_id());

				if (likely(new_stats)) {

					new_stats->used = jiffies;

					new_stats->packet_count = 1;