From f2cd2d3e9b3ef960612e362f0ad129d735452df2 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Mon, 29 Nov 2010 08:14:37 +0000
Subject: net sched: use xps information for qdisc NUMA affinity

Allocate qdisc memory according to NUMA properties of cpus included in
xps map.

To be effective, qdisc should be (re)setup after changes
of /sys/class/net/eth<n>/queues/tx-<n>/xps_cpus

I added a numa_node field in struct netdev_queue, containing NUMA node
if all cpus included in xps_cpus share same node, else -1.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/core/dev.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'net/core/dev.c')

diff --git a/net/core/dev.c b/net/core/dev.c
index 3259d2c323a6..cd2437495428 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5125,9 +5125,10 @@ static int netif_alloc_netdev_queues(struct net_device *dev)
 	}
 	dev->_tx = tx;
 
-	for (i = 0; i < count; i++)
+	for (i = 0; i < count; i++) {
+		netdev_queue_numa_node_write(&tx[i], -1);
 		tx[i].dev = dev;
-
+	}
 	return 0;
 }
 
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