[PATCH net-next 01/15] net: bridge: mdb: arrange internal structs so fast-path fields are close
From: Nikolay Aleksandrov <hidden>
Date: 2020-08-31 15:12:31
Also in:
bridge
Subsystem:
ethernet bridge, networking [general], the rest · Maintainers:
Nikolay Aleksandrov, Ido Schimmel, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Before this patch we'd need 2 cache lines for fast-path, now all used fields are in the first cache line. Signed-off-by: Nikolay Aleksandrov <redacted> --- net/bridge/br_private.h | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index baa1500f384f..357b6905ecef 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h@@ -217,23 +217,27 @@ struct net_bridge_fdb_entry { struct net_bridge_port_group { struct net_bridge_port *port; struct net_bridge_port_group __rcu *next; - struct hlist_node mglist; - struct rcu_head rcu; - struct timer_list timer; struct br_ip addr; unsigned char eth_addr[ETH_ALEN] __aligned(2); unsigned char flags; + + struct timer_list timer; + struct hlist_node mglist; + + struct rcu_head rcu; }; struct net_bridge_mdb_entry { struct rhash_head rhnode; struct net_bridge *br; struct net_bridge_port_group __rcu *ports; - struct rcu_head rcu; - struct timer_list timer; struct br_ip addr; bool host_joined; + + struct timer_list timer; struct hlist_node mdb_node; + + struct rcu_head rcu; }; struct net_bridge_port {
--
2.25.4