lkml.org 
[lkml]   [2024]   [Apr]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 5/5] mm: add per-order mTHP swpin_refault counter
Date
From: Barry Song <v-songbaohua@oppo.com>

Currently, we are handling the scenario where we've hit a
large folio in the swapcache, and the reclaiming process
for this large folio is still ongoing.

Signed-off-by: Barry Song <v-songbaohua@oppo.com>
---
include/linux/huge_mm.h | 1 +
mm/huge_memory.c | 2 ++
mm/memory.c | 1 +
3 files changed, 4 insertions(+)

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index c8256af83e33..b67294d5814f 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -269,6 +269,7 @@ enum mthp_stat_item {
MTHP_STAT_ANON_ALLOC_FALLBACK,
MTHP_STAT_ANON_SWPOUT,
MTHP_STAT_ANON_SWPOUT_FALLBACK,
+ MTHP_STAT_ANON_SWPIN_REFAULT,
__MTHP_STAT_COUNT
};

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index d8d2ed80b0bf..fb95345b0bde 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -556,12 +556,14 @@ DEFINE_MTHP_STAT_ATTR(anon_alloc, MTHP_STAT_ANON_ALLOC);
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);

static struct attribute *stats_attrs[] = {
&anon_alloc_attr.attr,
&anon_alloc_fallback_attr.attr,
&anon_swpout_attr.attr,
&anon_swpout_fallback_attr.attr,
+ &anon_swpin_refault_attr.attr,
NULL,
};

diff --git a/mm/memory.c b/mm/memory.c
index 9818dc1893c8..acc023795a4d 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4167,6 +4167,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
nr_pages = nr;
entry = folio->swap;
page = &folio->page;
+ count_mthp_stat(folio_order(folio), MTHP_STAT_ANON_SWPIN_REFAULT);
}

check_pte:
--
2.34.1

\
 
 \ /
  Last update: 2024-04-09 10:33    [W:0.341 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site