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-rw-r--r--include/linux/vmstat.h3
-rw-r--r--mm/vmscan.c3
-rw-r--r--mm/vmstat.c3
3 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index ff4696c6dce..81a97cf8f0a 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -36,6 +36,9 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
FOR_ALL_ZONES(PGSTEAL),
FOR_ALL_ZONES(PGSCAN_KSWAPD),
FOR_ALL_ZONES(PGSCAN_DIRECT),
+#ifdef CONFIG_NUMA
+ PGSCAN_ZONE_RECLAIM_FAILED,
+#endif
PGINODESTEAL, SLABS_SCANNED, KSWAPD_STEAL, KSWAPD_INODESTEAL,
PAGEOUTRUN, ALLOCSTALL, PGROTATED,
#ifdef CONFIG_HUGETLB_PAGE
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 16c82a868e2..3018ad75613 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2519,6 +2519,9 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
ret = __zone_reclaim(zone, gfp_mask, order);
zone_clear_flag(zone, ZONE_RECLAIM_LOCKED);
+ if (!ret)
+ count_vm_event(PGSCAN_ZONE_RECLAIM_FAILED);
+
return ret;
}
#endif
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 1e3aa8139f2..138bed53706 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -673,6 +673,9 @@ static const char * const vmstat_text[] = {
TEXTS_FOR_ZONES("pgscan_kswapd")
TEXTS_FOR_ZONES("pgscan_direct")
+#ifdef CONFIG_NUMA
+ "zone_reclaim_failed",
+#endif
"pginodesteal",
"slabs_scanned",
"kswapd_steal",