Add a new MTHP_STAT_ZSWPOUT entry to the sysfs mTHP stats so that
per-order mTHP folio ZSWAP stores can be accounted.
Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@xxxxxxxxx>
---
include/linux/huge_mm.h | 1 +
mm/huge_memory.c | 3 +++
2 files changed, 4 insertions(+)
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 4c32058cacfe..19d3e26eb276 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -118,6 +118,7 @@ enum mthp_stat_item {
MTHP_STAT_ANON_FAULT_ALLOC,
MTHP_STAT_ANON_FAULT_FALLBACK,
MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE,
+ MTHP_STAT_ZSWPOUT,
MTHP_STAT_SWPOUT,
MTHP_STAT_SWPOUT_FALLBACK,
MTHP_STAT_SHMEM_ALLOC,
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index cf8e34f62976..73b8ad255d8b 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -587,6 +587,7 @@ static struct kobj_attribute _name##_attr = __ATTR_RO(_name)
DEFINE_MTHP_STAT_ATTR(anon_fault_alloc, MTHP_STAT_ANON_FAULT_ALLOC);
DEFINE_MTHP_STAT_ATTR(anon_fault_fallback, MTHP_STAT_ANON_FAULT_FALLBACK);
DEFINE_MTHP_STAT_ATTR(anon_fault_fallback_charge, MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE);
+DEFINE_MTHP_STAT_ATTR(zswpout, MTHP_STAT_ZSWPOUT);
DEFINE_MTHP_STAT_ATTR(swpout, MTHP_STAT_SWPOUT);
DEFINE_MTHP_STAT_ATTR(swpout_fallback, MTHP_STAT_SWPOUT_FALLBACK);
#ifdef CONFIG_SHMEM
@@ -603,6 +604,7 @@ static struct attribute *anon_stats_attrs[] = {
&anon_fault_fallback_attr.attr,
&anon_fault_fallback_charge_attr.attr,
#ifndef CONFIG_SHMEM
+ &zswpout_attr.attr,
&swpout_attr.attr,
&swpout_fallback_attr.attr,
#endif
@@ -633,6 +635,7 @@ static struct attribute_group file_stats_attr_grp = {
static struct attribute *any_stats_attrs[] = {
#ifdef CONFIG_SHMEM
+ &zswpout_attr.attr,
&swpout_attr.attr,
&swpout_fallback_attr.attr,
#endif
--
2.27.0
