[NET]: Improve cache line coherency of ingress qdisc

Move the ingress qdisc members of struct net_device from the transmit
cache line to the receive cache line to avoid cache line ping-pong.
These members are only used on the receive path.

Signed-off-by: Neil Turton <nturton@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 047d432bde55..4ffa49dbb66f 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -604,6 +604,10 @@ struct net_device
 
         unsigned char           broadcast[MAX_ADDR_LEN];        /* hw bcast add */
 
+        /* ingress path synchronizer */
+        spinlock_t              ingress_lock;
+        struct Qdisc            *qdisc_ingress;
+
 /*
  * Cache line mostly used on queue transmit path (qdisc)
  */
@@ -617,10 +621,6 @@ struct net_device
         /* Partially transmitted GSO packet. */
         struct sk_buff          *gso_skb;
 
-        /* ingress path synchronizer */
-        spinlock_t              ingress_lock;
-        struct Qdisc            *qdisc_ingress;
-
 /*
  * One part is mostly used on xmit path (device)
  */