This is a prepare to improve the demotion profiling in the later
patches.
Per-node demotion stats help users to quickly identify which
node is in hige stree, and take some special operations if needed.
Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxx>
---
include/linux/mmzone.h | 4 ++++
include/linux/vm_event_item.h | 3 ---
mm/vmscan.c | 3 ++-
mm/vmstat.c | 6 +++---
4 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 4106fbc5b4b3..ad0309eea850 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -206,6 +206,10 @@ enum node_stat_item {
#ifdef CONFIG_NUMA_BALANCING
PGPROMOTE_SUCCESS, /* promote successfully */
PGPROMOTE_CANDIDATE, /* candidate pages to promote */
+ /* PGDEMOTE_*: pages demoted */
+ PGDEMOTE_KSWAPD,
+ PGDEMOTE_DIRECT,
+ PGDEMOTE_KHUGEPAGED,
#endif
NR_VM_NODE_STAT_ITEMS
};
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
index 8abfa1240040..d1b847502f09 100644
--- a/include/linux/vm_event_item.h
+++ b/include/linux/vm_event_item.h
@@ -41,9 +41,6 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
PGSTEAL_KSWAPD,
PGSTEAL_DIRECT,
PGSTEAL_KHUGEPAGED,
- PGDEMOTE_KSWAPD,
- PGDEMOTE_DIRECT,
- PGDEMOTE_KHUGEPAGED,
PGSCAN_KSWAPD,
PGSCAN_DIRECT,
PGSCAN_KHUGEPAGED,
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 6f13394b112e..2f1fb4ec3235 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1678,7 +1678,8 @@ static unsigned int demote_folio_list(struct list_head *demote_folios,
(unsigned long)&mtc, MIGRATE_ASYNC, MR_DEMOTION,
&nr_succeeded);
- __count_vm_events(PGDEMOTE_KSWAPD + reclaimer_offset(), nr_succeeded);
+ mod_node_page_state(NODE_DATA(target_nid),
+ PGDEMOTE_KSWAPD + reclaimer_offset(), nr_succeeded);
return nr_succeeded;
}
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 00e81e99c6ee..f141c48c39e4 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1244,6 +1244,9 @@ const char * const vmstat_text[] = {
#ifdef CONFIG_NUMA_BALANCING
"pgpromote_success",
"pgpromote_candidate",
+ "pgdemote_kswapd",
+ "pgdemote_direct",
+ "pgdemote_khugepaged",
#endif
/* enum writeback_stat_item counters */
@@ -1275,9 +1278,6 @@ const char * const vmstat_text[] = {
"pgsteal_kswapd",
"pgsteal_direct",
"pgsteal_khugepaged",
- "pgdemote_kswapd",
- "pgdemote_direct",
- "pgdemote_khugepaged",
"pgscan_kswapd",
"pgscan_direct",
"pgscan_khugepaged",
--
2.29.2
