diff options
| author | Barry Song <v-songbaohua@oppo.com> | 2024-10-26 10:24:23 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-11-11 09:26:43 +0100 |
| commit | aaf2914aec0fa67395574f6fa6b726168b049e60 (patch) | |
| tree | a846684f09350cb15c237108e5c246b873ff90e9 /mm/huge_memory.c | |
| parent | mm: zswap: zswap_store_page() will initialize entry after adding to xarray. (diff) | |
| download | linux-aaf2914aec0fa67395574f6fa6b726168b049e60.tar.xz linux-aaf2914aec0fa67395574f6fa6b726168b049e60.zip | |
mm: add per-order mTHP swpin counters
This helps profile the sizes of folios being swapped in. Currently,
only mTHP swap-out is being counted.
The new interface can be found at:
/sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats
swpin
For example,
cat /sys/kernel/mm/transparent_hugepage/hugepages-64kB/stats/swpin
12809
cat /sys/kernel/mm/transparent_hugepage/hugepages-32kB/stats/swpin
4763
[v-songbaohua@oppo.com: add a blank line in doc]
Link: https://lkml.kernel.org/r/20241030233423.80759-1-21cnbao@gmail.com
Link: https://lkml.kernel.org/r/20241026082423.26298-1-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Yosry Ahmed <yosryahmed@google.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Kanchana P Sridhar <kanchana.p.sridhar@intel.com>
Cc: Usama Arif <usamaarif642@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index b26c6503e993..f92068864469 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -616,6 +616,7 @@ 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(swpin, MTHP_STAT_SWPIN); DEFINE_MTHP_STAT_ATTR(swpout, MTHP_STAT_SWPOUT); DEFINE_MTHP_STAT_ATTR(swpout_fallback, MTHP_STAT_SWPOUT_FALLBACK); #ifdef CONFIG_SHMEM @@ -635,6 +636,7 @@ static struct attribute *anon_stats_attrs[] = { &anon_fault_fallback_charge_attr.attr, #ifndef CONFIG_SHMEM &zswpout_attr.attr, + &swpin_attr.attr, &swpout_attr.attr, &swpout_fallback_attr.attr, #endif @@ -666,6 +668,7 @@ static struct attribute_group file_stats_attr_grp = { static struct attribute *any_stats_attrs[] = { #ifdef CONFIG_SHMEM &zswpout_attr.attr, + &swpin_attr.attr, &swpout_attr.attr, &swpout_fallback_attr.attr, #endif |