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-rw-r--r--include/linux/vm_event_item.h2
-rw-r--r--mm/vmscan.c5
-rw-r--r--mm/vmstat.c2
3 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
index ae0dd1948c2b..a185cc75ff52 100644
--- a/include/linux/vm_event_item.h
+++ b/include/linux/vm_event_item.h
@@ -33,6 +33,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
PGREUSE,
PGSTEAL_KSWAPD,
PGSTEAL_DIRECT,
+ PGDEMOTE_KSWAPD,
+ PGDEMOTE_DIRECT,
PGSCAN_KSWAPD,
PGSCAN_DIRECT,
PGSCAN_DIRECT_THROTTLE,
diff --git a/mm/vmscan.c b/mm/vmscan.c
index f26b247f5daf..88593b82a8df 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1318,6 +1318,11 @@ static unsigned int demote_page_list(struct list_head *demote_pages,
target_nid, MIGRATE_ASYNC, MR_DEMOTION,
&nr_succeeded);
+ if (current_is_kswapd())
+ __count_vm_events(PGDEMOTE_KSWAPD, nr_succeeded);
+ else
+ __count_vm_events(PGDEMOTE_DIRECT, nr_succeeded);
+
return nr_succeeded;
}
diff --git a/mm/vmstat.c b/mm/vmstat.c
index b0534e068166..ec5a2e789dd2 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1217,6 +1217,8 @@ const char * const vmstat_text[] = {
"pgreuse",
"pgsteal_kswapd",
"pgsteal_direct",
+ "pgdemote_kswapd",
+ "pgdemote_direct",
"pgscan_kswapd",
"pgscan_direct",
"pgscan_direct_throttle",