[merged mm-stable] mm-swap-count-successful-large-folio-zswap-stores-in-hugepage-zswpout-stats.patch removed from -mm tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The quilt patch titled
     Subject: mm: swap: Count successful large folio zswap stores in hugepage zswpout stats
has been removed from the -mm tree.  Its filename was
     mm-swap-count-successful-large-folio-zswap-stores-in-hugepage-zswpout-stats.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Kanchana P Sridhar <kanchana.p.sridhar@xxxxxxxxx>
Subject: mm: swap: Count successful large folio zswap stores in hugepage zswpout stats
Date: Mon, 30 Sep 2024 22:32:22 -0700

Added a new MTHP_STAT_ZSWPOUT entry to the sysfs transparent_hugepage
stats so that successful large folio zswap stores can be accounted under
the per-order sysfs "zswpout" stats:

/sys/kernel/mm/transparent_hugepage/hugepages-*kB/stats/zswpout

Other non-zswap swap device swap-out events will be counted under
the existing sysfs "swpout" stats:

/sys/kernel/mm/transparent_hugepage/hugepages-*kB/stats/swpout

Also, added documentation for the newly added sysfs per-order hugepage
"zswpout" stats. The documentation clarifies that only non-zswap swapouts
will be accounted in the existing "swpout" stats.

Link: https://lkml.kernel.org/r/20241001053222.6944-8-kanchana.p.sridhar@xxxxxxxxx
Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@xxxxxxxxx>
Reviewed-by: Nhat Pham <nphamcs@xxxxxxxxx>
Cc: Chengming Zhou <chengming.zhou@xxxxxxxxx>
Cc: "Huang, Ying" <ying.huang@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Ryan Roberts <ryan.roberts@xxxxxxx>
Cc: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Cc: Usama Arif <usamaarif642@xxxxxxxxx>
Cc: Wajdi Feghali <wajdi.k.feghali@xxxxxxxxx>
Cc: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
Cc: "Zou, Nanhai" <nanhai.zou@xxxxxxxxx>
Cc: Barry Song <21cnbao@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 Documentation/admin-guide/mm/transhuge.rst |    8 ++++++--
 include/linux/huge_mm.h                    |    1 +
 mm/huge_memory.c                           |    3 +++
 mm/page_io.c                               |    1 +
 4 files changed, 11 insertions(+), 2 deletions(-)

--- a/Documentation/admin-guide/mm/transhuge.rst~mm-swap-count-successful-large-folio-zswap-stores-in-hugepage-zswpout-stats
+++ a/Documentation/admin-guide/mm/transhuge.rst
@@ -530,10 +530,14 @@ anon_fault_fallback_charge
 	instead falls back to using huge pages with lower orders or
 	small pages even though the allocation was successful.
 
-swpout
-	is incremented every time a huge page is swapped out in one
+zswpout
+	is incremented every time a huge page is swapped out to zswap in one
 	piece without splitting.
 
+swpout
+	is incremented every time a huge page is swapped out to a non-zswap
+	swap device in one piece without splitting.
+
 swpout_fallback
 	is incremented if a huge page has to be split before swapout.
 	Usually because failed to allocate some continuous swap space
--- a/include/linux/huge_mm.h~mm-swap-count-successful-large-folio-zswap-stores-in-hugepage-zswpout-stats
+++ a/include/linux/huge_mm.h
@@ -119,6 +119,7 @@ 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,
--- a/mm/huge_memory.c~mm-swap-count-successful-large-folio-zswap-stores-in-hugepage-zswpout-stats
+++ a/mm/huge_memory.c
@@ -600,6 +600,7 @@ static struct kobj_attribute _name##_att
 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
@@ -618,6 +619,7 @@ static struct attribute *anon_stats_attr
 	&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
@@ -648,6 +650,7 @@ static struct attribute_group file_stats
 
 static struct attribute *any_stats_attrs[] = {
 #ifdef CONFIG_SHMEM
+	&zswpout_attr.attr,
 	&swpout_attr.attr,
 	&swpout_fallback_attr.attr,
 #endif
--- a/mm/page_io.c~mm-swap-count-successful-large-folio-zswap-stores-in-hugepage-zswpout-stats
+++ a/mm/page_io.c
@@ -269,6 +269,7 @@ int swap_writepage(struct page *page, st
 		swap_zeromap_folio_clear(folio);
 	}
 	if (zswap_store(folio)) {
+		count_mthp_stat(folio_order(folio), MTHP_STAT_ZSWPOUT);
 		folio_unlock(folio);
 		return 0;
 	}
_

Patches currently in -mm which might be from kanchana.p.sridhar@xxxxxxxxx are






[Index of Archives]     [Kernel Archive]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]

  Powered by Linux