netdev - [PATCH 01/24] net, diet: Reduce netdev name hash table for CONFIG_BASE

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Date:	Mon,  5 May 2014 15:25:50 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, tom.zanussi@...ux.intel.com,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 01/24] net, diet: Reduce netdev name hash table for CONFIG_BASE_SMALL

From: Andi Kleen <ak@...ux.intel.com>

Small systems typically only have two network devices, so use
hash shift 2.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 include/net/net_namespace.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 5f9eb26..d2b8c6c 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -37,7 +37,11 @@ struct sock;
 struct netns_ipvs;
 
 
+#ifdef CONFIG_BASE_SMALL
+#define NETDEV_HASHBITS    2
+#else
 #define NETDEV_HASHBITS    8
+#endif
 #define NETDEV_HASHENTRIES (1 << NETDEV_HASHBITS)
 
 struct net {
-- 
1.9.0

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