[PATCH] mm/slob.c: for_each_possible_cpu(), not NR_CPUS

Convert for-loops that explicitly reference "NR_CPUS" into the
potentially more efficient for_each_possible_cpu() construct.
Signed-off-by: John Hawkes <hawkes@sgi.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

mm/slob.c

@@ -354,9 +354,7 @@ void *__alloc_percpu(size_t size)
 	if (!pdata)
 		return NULL;
 
-	for (i = 0; i < NR_CPUS; i++) {
-		if (!cpu_possible(i))
-			continue;
+	for_each_possible_cpu(i) {
 		pdata->ptrs[i] = kmalloc(size, GFP_KERNEL);
 		if (!pdata->ptrs[i])
 			goto unwind_oom;
@@ -383,11 +381,9 @@ free_percpu(const void *objp)
 	int i;
 	struct percpu_data *p = (struct percpu_data *) (~(unsigned long) objp);
 
-	for (i = 0; i < NR_CPUS; i++) {
-		if (!cpu_possible(i))
-			continue;
+	for_each_possible_cpu(i)
 		kfree(p->ptrs[i]);
-	}
+
 	kfree(p);
 }
 EXPORT_SYMBOL(free_percpu);