aboutsummaryrefslogtreecommitdiff
path: root/mm/vmstat.c
diff options
context:
space:
mode:
authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2009-03-31 15:19:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-01 08:59:11 -0700
commitee99c71c59f897436ec65debb99372b3146f9985 (patch)
tree051f1c43b7c7658689d4b2c23b3d8585d6464a89 /mm/vmstat.c
parenta6dc60f8975ad96d162915e07703a4439c80dcf0 (diff)
downloadvexpress-lsk-ee99c71c59f897436ec65debb99372b3146f9985.tar.gz
mm: introduce for_each_populated_zone() macro
Impact: cleanup In almost cases, for_each_zone() is used with populated_zone(). It's because almost function doesn't need memoryless node information. Therefore, for_each_populated_zone() can help to make code simplify. This patch has no functional change. [akpm@linux-foundation.org: small cleanup] Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
-rw-r--r--mm/vmstat.c11
1 files changed, 2 insertions, 9 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 8cd81ea1ddc..9826766f127 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -135,11 +135,7 @@ static void refresh_zone_stat_thresholds(void)
int cpu;
int threshold;
- for_each_zone(zone) {
-
- if (!zone->present_pages)
- continue;
-
+ for_each_populated_zone(zone) {
threshold = calculate_threshold(zone);
for_each_online_cpu(cpu)
@@ -301,12 +297,9 @@ void refresh_cpu_vm_stats(int cpu)
int i;
int global_diff[NR_VM_ZONE_STAT_ITEMS] = { 0, };
- for_each_zone(zone) {
+ for_each_populated_zone(zone) {
struct per_cpu_pageset *p;
- if (!populated_zone(zone))
- continue;
-
p = zone_pcp(zone, cpu);
for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)