On 2025/7/2 13:57, Nico Pache wrote:
From: Dev Jain <dev.jain@xxxxxxx>
Pass order to alloc_charge_folio() and update mTHP statistics.
Reviewed-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Co-developed-by: Nico Pache <npache@xxxxxxxxxx>
Signed-off-by: Nico Pache <npache@xxxxxxxxxx>
Signed-off-by: Dev Jain <dev.jain@xxxxxxx>
---
include/linux/huge_mm.h | 2 ++
mm/huge_memory.c | 4 ++++
mm/khugepaged.c | 17 +++++++++++------
3 files changed, 17 insertions(+), 6 deletions(-)
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 4d5bb67dc4ec..a6ea89fdaee6 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -125,6 +125,8 @@ enum mthp_stat_item {
MTHP_STAT_ANON_FAULT_ALLOC,
MTHP_STAT_ANON_FAULT_FALLBACK,
MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE,
+ MTHP_STAT_COLLAPSE_ALLOC,
+ MTHP_STAT_COLLAPSE_ALLOC_FAILED,
MTHP_STAT_ZSWPOUT,
MTHP_STAT_SWPIN,
MTHP_STAT_SWPIN_FALLBACK,
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index ce130225a8e5..69777a35e722 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -614,6 +614,8 @@ 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(collapse_alloc, MTHP_STAT_COLLAPSE_ALLOC);
+DEFINE_MTHP_STAT_ATTR(collapse_alloc_failed, MTHP_STAT_COLLAPSE_ALLOC_FAILED);
DEFINE_MTHP_STAT_ATTR(zswpout, MTHP_STAT_ZSWPOUT);
DEFINE_MTHP_STAT_ATTR(swpin, MTHP_STAT_SWPIN);
DEFINE_MTHP_STAT_ATTR(swpin_fallback, MTHP_STAT_SWPIN_FALLBACK);
@@ -679,6 +681,8 @@ static struct attribute *any_stats_attrs[] = {
#endif
&split_attr.attr,
&split_failed_attr.attr,
+ &collapse_alloc_attr.attr,
+ &collapse_alloc_failed_attr.attr,
NULL,
};
Sorry, I forgot to mention that you should update the
'Documentation/admin-guide/mm/transhuge.rst' file for these new statistics.
