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openvswitch: Optimize updating for OvS flow_stats.

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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: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tonghao Zhang 2017-07-17 23:28:05 -07:00 committed by David S. Miller
parent 6b098a08ad
commit c57c054eb5
1 changed files with 1 additions and 2 deletions
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3
net/openvswitch/flow.c
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@ -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;