diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 9ba3413a9909..2941ef21f203 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -118,21 +118,19 @@
 #define RT_GC_TIMEOUT (300*HZ)
 
 static int ip_rt_max_size;
-static int ip_rt_gc_timeout		= RT_GC_TIMEOUT;
-static int ip_rt_gc_interval		= 60 * HZ;
-static int ip_rt_gc_min_interval	= HZ / 2;
-static int ip_rt_redirect_number	= 9;
-static int ip_rt_redirect_load		= HZ / 50;
-static int ip_rt_redirect_silence	= ((HZ / 50) << (9 + 1));
-static int ip_rt_error_cost		= HZ;
-static int ip_rt_error_burst		= 5 * HZ;
-static int ip_rt_gc_elasticity		= 8;
-static int ip_rt_mtu_expires		= 10 * 60 * HZ;
-static int ip_rt_min_pmtu		= 512 + 20 + 20;
-static int ip_rt_min_advmss		= 256;
-static int ip_rt_secret_interval	= 10 * 60 * HZ;
-
-#define RTprint(a...)	printk(KERN_DEBUG a)
+static int ip_rt_gc_timeout __read_mostly	= RT_GC_TIMEOUT;
+static int ip_rt_gc_interval __read_mostly	= 60 * HZ;
+static int ip_rt_gc_min_interval __read_mostly	= HZ / 2;
+static int ip_rt_redirect_number __read_mostly	= 9;
+static int ip_rt_redirect_load __read_mostly	= HZ / 50;
+static int ip_rt_redirect_silence __read_mostly	= ((HZ / 50) << (9 + 1));
+static int ip_rt_error_cost __read_mostly	= HZ;
+static int ip_rt_error_burst __read_mostly	= 5 * HZ;
+static int ip_rt_gc_elasticity __read_mostly	= 8;
+static int ip_rt_mtu_expires __read_mostly	= 10 * 60 * HZ;
+static int ip_rt_min_pmtu __read_mostly		= 512 + 20 + 20;
+static int ip_rt_min_advmss __read_mostly	= 256;
+static int ip_rt_secret_interval __read_mostly	= 10 * 60 * HZ;
 
 static void rt_worker_func(struct work_struct *work);
 static DECLARE_DELAYED_WORK(expires_work, rt_worker_func);
@@ -252,10 +250,10 @@ static inline void rt_hash_lock_init(void)
 }
 #endif
 
-static struct rt_hash_bucket 	*rt_hash_table;
-static unsigned			rt_hash_mask;
-static unsigned int		rt_hash_log;
-static atomic_t			rt_genid;
+static struct rt_hash_bucket 	*rt_hash_table __read_mostly;
+static unsigned			rt_hash_mask __read_mostly;
+static unsigned int		rt_hash_log  __read_mostly;
+static atomic_t			rt_genid __read_mostly;
 
 static DEFINE_PER_CPU(struct rt_cache_stat, rt_cache_stat);
 #define RT_CACHE_STAT_INC(field) \