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Subject[RFC PATCH 5/5] mm: shmem: add anonymous share mTHP counters
Date
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
---
include/linux/huge_mm.h | 2 ++
mm/huge_memory.c | 4 ++++
mm/shmem.c | 5 ++++-
3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 26b6fa98d8ac..67b9c1acad31 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -270,6 +270,8 @@ enum mthp_stat_item {
MTHP_STAT_ANON_SWPOUT,
MTHP_STAT_ANON_SWPOUT_FALLBACK,
MTHP_STAT_ANON_SWPIN_REFAULT,
+ MTHP_STAT_SHMEM_ANON_ALLOC,
+ MTHP_STAT_SHMEM_ANON_ALLOC_FALLBACK,
__MTHP_STAT_COUNT
};

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 9e52c0db7580..dc15240c1ab3 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -557,6 +557,8 @@ DEFINE_MTHP_STAT_ATTR(anon_alloc_fallback, MTHP_STAT_ANON_ALLOC_FALLBACK);
DEFINE_MTHP_STAT_ATTR(anon_swpout, MTHP_STAT_ANON_SWPOUT);
DEFINE_MTHP_STAT_ATTR(anon_swpout_fallback, MTHP_STAT_ANON_SWPOUT_FALLBACK);
DEFINE_MTHP_STAT_ATTR(anon_swpin_refault, MTHP_STAT_ANON_SWPIN_REFAULT);
+DEFINE_MTHP_STAT_ATTR(shmem_anon_alloc, MTHP_STAT_SHMEM_ANON_ALLOC);
+DEFINE_MTHP_STAT_ATTR(shmem_anon_alloc_fallback, MTHP_STAT_SHMEM_ANON_ALLOC_FALLBACK);

static struct attribute *stats_attrs[] = {
&anon_alloc_attr.attr,
@@ -564,6 +566,8 @@ static struct attribute *stats_attrs[] = {
&anon_swpout_attr.attr,
&anon_swpout_fallback_attr.attr,
&anon_swpin_refault_attr.attr,
+ &shmem_anon_alloc_attr.attr,
+ &shmem_anon_alloc_fallback_attr.attr,
NULL,
};

diff --git a/mm/shmem.c b/mm/shmem.c
index 8b009e7040b2..4a0aa75ab29c 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1706,11 +1706,14 @@ static struct folio *shmem_alloc_and_add_folio(struct vm_fault *vmf,
pages = 1 << order;
index = round_down(index, pages);
folio = shmem_alloc_hugefolio(gfp, info, index, order);
- if (folio)
+ if (folio) {
+ count_mthp_stat(order, MTHP_STAT_SHMEM_ANON_ALLOC);
goto allocated;
+ }

if (pages == HPAGE_PMD_NR)
count_vm_event(THP_FILE_FALLBACK);
+ count_mthp_stat(order, MTHP_STAT_SHMEM_ANON_ALLOC_FALLBACK);
order = next_order(&orders, order);
}
} else {
--
2.39.3

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