SLUB: Extract finish_bootstrap function for clean !SYSFS boot

Extract finish_bootstrap function from slab_sysfs_init. We can
call that function also if we do not have sysfs defined. This enabled
embedded SMP systems to have the periodic 30 second check for
unused per cpu slabs.

Signed-off-by: Christoph Lameter <clameter@sgi.com>

---
 mm/slub.c |   44 +++++++++++++++++++++++++++-----------------
 1 file changed, 27 insertions(+), 17 deletions(-)

Index: linux-2.6.21-rc6/mm/slub.c
===================================================================
--- linux-2.6.21-rc6.orig/mm/slub.c	2007-04-12 17:28:03.000000000 -0700
+++ linux-2.6.21-rc6/mm/slub.c	2007-04-12 17:28:43.000000000 -0700
@@ -1716,6 +1716,30 @@ static int calculate_sizes(struct kmem_c
 
 }
 
+static int __init finish_bootstrap(void)
+{
+	struct list_head *h;
+	int err;
+
+	slab_state = SYSFS;
+
+	list_for_each(h, &slab_caches) {
+		struct kmem_cache *s =
+			container_of(h, struct kmem_cache, list);
+
+		err = sysfs_slab_add(s);
+		BUG_ON(err);
+		/*
+		 * Start the periodic checks for inactive cpu slabs.
+		 * flush_all() will zero s->cpu_slabs which will cause
+		 * any allocation of a new cpu slab to schedule an event
+		 * via keventd to watch for inactive cpu slabs.
+		 */
+		flush_all(s);
+	}
+	return 0;
+}
+
 static int kmem_cache_open(struct kmem_cache *s, gfp_t gfpflags,
 		const char *name, size_t size,
 		size_t align, unsigned long flags,
@@ -3275,7 +3299,6 @@ static int sysfs_slab_alias(struct kmem_
 int __init slab_sysfs_init(void)
 {
 	int err;
-	struct list_head *h;
 
 	err = subsystem_register(&slab_subsys);
 	if (err) {
@@ -3283,15 +3306,7 @@ int __init slab_sysfs_init(void)
 		return -ENOSYS;
 	}
 
-	slab_state = SYSFS;
-
-	list_for_each(h, &slab_caches) {
-		struct kmem_cache *s =
-			container_of(h, struct kmem_cache, list);
-
-		err = sysfs_slab_add(s);
-		BUG_ON(err);
-	}
+	finish_bootstrap();
 
 	while (alias_list) {
 		struct saved_alias *al = alias_list;
@@ -3306,4 +3321,6 @@ int __init slab_sysfs_init(void)
 }
 
 __initcall(slab_sysfs_init);
+#else
+__initcall(finish_bootstrap);
 #endif