[PATCH] lockdep: fix RT_HASH_LOCK_SZ

On lockdep we have a quite big spinlock_t, so keep the size down.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

net/ipv4/route.c

@@ -210,17 +210,22 @@ struct rt_hash_bucket {
 /*
  * Instead of using one spinlock for each rt_hash_bucket, we use a table of spinlocks
  * The size of this table is a power of two and depends on the number of CPUS.
+ * (on lockdep we have a quite big spinlock_t, so keep the size down there)
  */
-#if NR_CPUS >= 32
-#define RT_HASH_LOCK_SZ	4096
-#elif NR_CPUS >= 16
-#define RT_HASH_LOCK_SZ	2048
-#elif NR_CPUS >= 8
-#define RT_HASH_LOCK_SZ	1024
-#elif NR_CPUS >= 4
-#define RT_HASH_LOCK_SZ	512
+#ifdef CONFIG_LOCKDEP
+# define RT_HASH_LOCK_SZ	256
 #else
-#define RT_HASH_LOCK_SZ	256
+# if NR_CPUS >= 32
+#  define RT_HASH_LOCK_SZ	4096
+# elif NR_CPUS >= 16
+#  define RT_HASH_LOCK_SZ	2048
+# elif NR_CPUS >= 8
+#  define RT_HASH_LOCK_SZ	1024
+# elif NR_CPUS >= 4
+#  define RT_HASH_LOCK_SZ	512
+# else
+#  define RT_HASH_LOCK_SZ	256
+# endif
 #endif
 
 static spinlock_t	*rt_hash_locks;