mm: convert printk(KERN_<LEVEL> to pr_<level>

Most of the mm subsystem uses pr_<level> so make it consistent.

Miscellanea:

 - Realign arguments
 - Add missing newline to format
 - kmemleak-test.c has a "kmemleak: " prefix added to the
   "Kmemleak testing" logging message via pr_fmt

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Tejun Heo <tj@kernel.org>	[percpu]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/percpu-km.c b/mm/percpu-km.c
index 10e3d0b..0db94b7 100644
--- a/mm/percpu-km.c
+++ b/mm/percpu-km.c
@@ -95,7 +95,7 @@
 
 	/* all units must be in a single group */
 	if (ai->nr_groups != 1) {
-		printk(KERN_CRIT "percpu: can't handle more than one groups\n");
+		pr_crit("percpu: can't handle more than one groups\n");
 		return -EINVAL;
 	}
 
@@ -103,8 +103,8 @@
 	alloc_pages = roundup_pow_of_two(nr_pages);
 
 	if (alloc_pages > nr_pages)
-		printk(KERN_WARNING "percpu: wasting %zu pages per chunk\n",
-		       alloc_pages - nr_pages);
+		pr_warn("percpu: wasting %zu pages per chunk\n",
+			alloc_pages - nr_pages);
 
 	return 0;
 }