netdev - [PATCH net-next] rps: NUMA flow limit allocations

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Date:	Wed, 18 Dec 2013 06:46:23 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>,
	Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH net-next] rps: NUMA flow limit allocations

From: Eric Dumazet <edumazet@...gle.com>

Given we allocate memory for each cpu, we can do this
using NUMA affinities, instead of using NUMA policies
of the process changing flow_limit_cpu_bitmap value.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: Willem de Bruijn <willemb@...gle.com>
---
 net/core/sysctl_net_core.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index cca444190907..cf9cd13509a7 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -122,7 +122,8 @@ static int flow_limit_cpu_sysctl(struct ctl_table *table, int write,
 				synchronize_rcu();
 				kfree(cur);
 			} else if (!cur && cpumask_test_cpu(i, mask)) {
-				cur = kzalloc(len, GFP_KERNEL);
+				cur = kzalloc_node(len, GFP_KERNEL,
+						   cpu_to_node(i));
 				if (!cur) {
 					/* not unwinding previous changes */
 					ret = -ENOMEM;


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