The patch titled
mm, mem-hotplug: update pcp->stat_threshold when memory hotplug occur
has been added to the -mm tree. Its filename is
mm-mem-hotplug-update-pcp-stat_threshold-when-memory-hotplug-occur.patch
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------------------------------------------------------
Subject: mm, mem-hotplug: update pcp->stat_threshold when memory hotplug occur
From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Currently, cpu hotplug updates pcp->stat_threshold, but memory hotplug
doesn't. There is no reason for this.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Mel Gorman <mel@xxxxxxxxx>
Acked-by: Christoph Lameter <cl@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/vmstat.h | 1 +
mm/page_alloc.c | 2 ++
mm/vmstat.c | 3 +--
3 files changed, 4 insertions(+), 2 deletions(-)
diff -puN include/linux/vmstat.h~mm-mem-hotplug-update-pcp-stat_threshold-when-memory-hotplug-occur include/linux/vmstat.h
--- a/include/linux/vmstat.h~mm-mem-hotplug-update-pcp-stat_threshold-when-memory-hotplug-occur
+++ a/include/linux/vmstat.h
@@ -261,6 +261,7 @@ extern void dec_zone_state(struct zone *
extern void __dec_zone_state(struct zone *, enum zone_stat_item);
void refresh_cpu_vm_stats(int);
+void refresh_zone_stat_thresholds(void);
int calculate_pressure_threshold(struct zone *zone);
int calculate_normal_threshold(struct zone *zone);
diff -puN mm/page_alloc.c~mm-mem-hotplug-update-pcp-stat_threshold-when-memory-hotplug-occur mm/page_alloc.c
--- a/mm/page_alloc.c~mm-mem-hotplug-update-pcp-stat_threshold-when-memory-hotplug-occur
+++ a/mm/page_alloc.c
@@ -54,6 +54,7 @@
#include <trace/events/kmem.h>
#include <linux/ftrace_event.h>
#include <linux/memcontrol.h>
+#include <linux/vmstat.h>
#include <asm/tlbflush.h>
#include <asm/div64.h>
@@ -5124,6 +5125,7 @@ int __meminit init_per_zone_wmark_min(vo
if (min_free_kbytes > 65536)
min_free_kbytes = 65536;
setup_per_zone_wmarks();
+ refresh_zone_stat_thresholds();
setup_per_zone_lowmem_reserve();
setup_per_zone_inactive_ratio();
return 0;
diff -puN mm/vmstat.c~mm-mem-hotplug-update-pcp-stat_threshold-when-memory-hotplug-occur mm/vmstat.c
--- a/mm/vmstat.c~mm-mem-hotplug-update-pcp-stat_threshold-when-memory-hotplug-occur
+++ a/mm/vmstat.c
@@ -157,7 +157,7 @@ int calculate_normal_threshold(struct zo
/*
* Refresh the thresholds for each zone.
*/
-static void refresh_zone_stat_thresholds(void)
+void refresh_zone_stat_thresholds(void)
{
struct zone *zone;
int cpu;
@@ -1198,7 +1198,6 @@ static int __init setup_vmstat(void)
#ifdef CONFIG_SMP
int cpu;
- refresh_zone_stat_thresholds();
register_cpu_notifier(&vmstat_notifier);
for_each_online_cpu(cpu)
_
Patches currently in -mm which might be from kosaki.motohiro@xxxxxxxxxxxxxx are
memcg-fix-mem_cgroup_rotate_reclaimable_page.patch
mm-per-node-vmstat-show-proper-vmstats.patch
mm-per-node-vmstat-show-proper-vmstats-fix.patch
mm-increase-reclaim_distance-to-30.patch
mm-mem-hotplug-fix-section-mismatch-setup_per_zone_inactive_ratio-should-be-__meminit.patch
mm-mem-hotplug-recalculate-lowmem_reserve-when-memory-hotplug-occur.patch
mm-mem-hotplug-update-pcp-stat_threshold-when-memory-hotplug-occur.patch
mm-batch-activate_page-to-reduce-lock-contention.patch
mm-move-enum-vm_event_item-into-a-standalone-header-file.patch
memcg-count-the-soft_limit-reclaim-in-global-background-reclaim.patch
memcg-add-stats-to-monitor-soft_limit-reclaim.patch
add-the-pagefault-count-into-memcg-stats.patch
add-the-pagefault-count-into-memcg-stats-fix.patch
kexec-remove-kmsg_dump_kexec.patch
kexec-remove-kmsg_dump_kexec-fix.patch
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