The patch titled
Subject: mm/buddy: get the allownodes for dump at once
has been added to the -mm tree. Its filename is
mm-buddy-get-the-allownodes-for-dump-at-once.patch
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------------------------------------------------------
From: Gavin Shan <shangw@xxxxxxxxxxxxxxxxxx>
Subject: mm/buddy: get the allownodes for dump at once
When dumping the statistics for zones in the allowed nodes in the function
show_free_areas(), skip_free_areas_node() got called for multiple times to
figure out the same information: the allowed nodes for dump. It's
reasonable to get the allowed nodes at once. That will also help to get
consistent dump information.
Signed-off-by: Gavin Shan <shangw@xxxxxxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Minchan Kim <minchan.kim@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff -puN mm/page_alloc.c~mm-buddy-get-the-allownodes-for-dump-at-once mm/page_alloc.c
--- a/mm/page_alloc.c~mm-buddy-get-the-allownodes-for-dump-at-once
+++ a/mm/page_alloc.c
@@ -2763,11 +2763,19 @@ out:
*/
void show_free_areas(unsigned int filter)
{
- int cpu;
+ int nid, cpu;
+ nodemask_t allownodes;
struct zone *zone;
+ /* Figure out the allowed nodes for dump */
+ nodes_clear(allownodes);
+ for_each_online_node(nid) {
+ if (!skip_free_areas_node(filter, nid))
+ node_set(nid, allownodes);
+ }
+
for_each_populated_zone(zone) {
- if (skip_free_areas_node(filter, zone_to_nid(zone)))
+ if (!node_isset(zone_to_nid(zone), allownodes))
continue;
show_node(zone);
printk("%s per-cpu:\n", zone->name);
@@ -2810,7 +2818,7 @@ void show_free_areas(unsigned int filter
for_each_populated_zone(zone) {
int i;
- if (skip_free_areas_node(filter, zone_to_nid(zone)))
+ if (!node_isset(zone_to_nid(zone), allownodes))
continue;
show_node(zone);
printk("%s"
@@ -2879,7 +2887,7 @@ void show_free_areas(unsigned int filter
for_each_populated_zone(zone) {
unsigned long nr[MAX_ORDER], flags, order, total = 0;
- if (skip_free_areas_node(filter, zone_to_nid(zone)))
+ if (!node_isset(zone_to_nid(zone), allownodes))
continue;
show_node(zone);
printk("%s: ", zone->name);
_
Subject: Subject: mm/buddy: get the allownodes for dump at once
Patches currently in -mm which might be from shangw@xxxxxxxxxxxxxxxxxx are
mm-slab-remove-duplicate-check.patch
mm-buddy-cleanup-on-should_fail_alloc_page.patch
mm-compaction-cleanup-on-compaction_deferred.patch
mm-buddy-get-the-allownodes-for-dump-at-once.patch
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