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

Andi Kleen
2014-05-05T22:28:33Z

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

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

Signed-off-by: Andi Kleen <ak@linux.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