[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>

diff --git a/mm/slob.c b/mm/slob.c
index 9bcc7e2..a68255b 100644 (file)
--- a/mm/slob.c
+++ b/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);