diff options
| author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2009-03-31 15:19:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-01 08:59:11 -0700 |
| commit | ee99c71c59f897436ec65debb99372b3146f9985 (patch) | |
| tree | 051f1c43b7c7658689d4b2c23b3d8585d6464a89 /mm/vmstat.c | |
| parent | a6dc60f8975ad96d162915e07703a4439c80dcf0 (diff) | |
| download | lwn-ee99c71c59f897436ec65debb99372b3146f9985.tar.gz lwn-ee99c71c59f897436ec65debb99372b3146f9985.zip | |
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.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 8cd81ea1ddc1..9826766f1274 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++) |