The patch titled
Subject: mm: memcontrol: add file_thp, shmem_thp to memory.stat
has been removed from the -mm tree. Its filename was
mm-memcontrol-add-file_thp-shmem_thp-to-memorystat.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: memcontrol: add file_thp, shmem_thp to memory.stat
As huge page usage in the page cache and for shmem files proliferates in
our production environment, the performance monitoring team has asked for
per-cgroup stats on those pages.
We already track and export anon_thp per cgroup. We already track file
THP and shmem THP per node, so making them per-cgroup is only a matter of
switching from node to lruvec counters. All callsites are in places where
the pages are charged and locked, so page->memcg is stable.
[hannes@xxxxxxxxxxx: add documentation]
Link: https://lkml.kernel.org/r/20201026174029.GC548555@xxxxxxxxxxx
Link: https://lkml.kernel.org/r/20201022151844.489337-1-hannes@xxxxxxxxxxx
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reviewed-by: Rik van Riel <riel@xxxxxxxxxxx>
Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Acked-by: Song Liu <songliubraving@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/cgroup-v2.rst | 8 ++++++++
mm/filemap.c | 4 ++--
mm/huge_memory.c | 4 ++--
mm/khugepaged.c | 4 ++--
mm/memcontrol.c | 6 +++++-
mm/shmem.c | 2 +-
6 files changed, 20 insertions(+), 8 deletions(-)
--- a/Documentation/admin-guide/cgroup-v2.rst~mm-memcontrol-add-file_thp-shmem_thp-to-memorystat
+++ a/Documentation/admin-guide/cgroup-v2.rst
@@ -1300,6 +1300,14 @@ PAGE_SIZE multiple when read back.
Amount of memory used in anonymous mappings backed by
transparent hugepages
+ file_thp
+ Amount of cached filesystem data backed by transparent
+ hugepages
+
+ shmem_thp
+ Amount of shm, tmpfs, shared anonymous mmap()s backed by
+ transparent hugepages
+
inactive_anon, active_anon, inactive_file, active_file, unevictable
Amount of memory, swap-backed and filesystem-backed,
on the internal memory management lists used by the
--- a/mm/filemap.c~mm-memcontrol-add-file_thp-shmem_thp-to-memorystat
+++ a/mm/filemap.c
@@ -204,9 +204,9 @@ static void unaccount_page_cache_page(st
if (PageSwapBacked(page)) {
__mod_lruvec_page_state(page, NR_SHMEM, -nr);
if (PageTransHuge(page))
- __dec_node_page_state(page, NR_SHMEM_THPS);
+ __dec_lruvec_page_state(page, NR_SHMEM_THPS);
} else if (PageTransHuge(page)) {
- __dec_node_page_state(page, NR_FILE_THPS);
+ __dec_lruvec_page_state(page, NR_FILE_THPS);
filemap_nr_thps_dec(mapping);
}
--- a/mm/huge_memory.c~mm-memcontrol-add-file_thp-shmem_thp-to-memorystat
+++ a/mm/huge_memory.c
@@ -2710,9 +2710,9 @@ int split_huge_page_to_list(struct page
spin_unlock(&ds_queue->split_queue_lock);
if (mapping) {
if (PageSwapBacked(head))
- __dec_node_page_state(head, NR_SHMEM_THPS);
+ __dec_lruvec_page_state(head, NR_SHMEM_THPS);
else
- __dec_node_page_state(head, NR_FILE_THPS);
+ __dec_lruvec_page_state(head, NR_FILE_THPS);
}
__split_huge_page(page, list, end, flags);
--- a/mm/khugepaged.c~mm-memcontrol-add-file_thp-shmem_thp-to-memorystat
+++ a/mm/khugepaged.c
@@ -1845,9 +1845,9 @@ out_unlock:
}
if (is_shmem)
- __inc_node_page_state(new_page, NR_SHMEM_THPS);
+ __inc_lruvec_page_state(new_page, NR_SHMEM_THPS);
else {
- __inc_node_page_state(new_page, NR_FILE_THPS);
+ __inc_lruvec_page_state(new_page, NR_FILE_THPS);
filemap_nr_thps_inc(mapping);
}
--- a/mm/memcontrol.c~mm-memcontrol-add-file_thp-shmem_thp-to-memorystat
+++ a/mm/memcontrol.c
@@ -1512,6 +1512,8 @@ static struct memory_stat memory_stats[]
* constant(e.g. powerpc).
*/
{ "anon_thp", 0, NR_ANON_THPS },
+ { "file_thp", 0, NR_FILE_THPS },
+ { "shmem_thp", 0, NR_SHMEM_THPS },
#endif
{ "inactive_anon", PAGE_SIZE, NR_INACTIVE_ANON },
{ "active_anon", PAGE_SIZE, NR_ACTIVE_ANON },
@@ -1542,7 +1544,9 @@ static int __init memory_stats_init(void
for (i = 0; i < ARRAY_SIZE(memory_stats); i++) {
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
- if (memory_stats[i].idx == NR_ANON_THPS)
+ if (memory_stats[i].idx == NR_ANON_THPS ||
+ memory_stats[i].idx == NR_FILE_THPS ||
+ memory_stats[i].idx == NR_SHMEM_THPS)
memory_stats[i].ratio = HPAGE_PMD_SIZE;
#endif
VM_BUG_ON(!memory_stats[i].ratio);
--- a/mm/shmem.c~mm-memcontrol-add-file_thp-shmem_thp-to-memorystat
+++ a/mm/shmem.c
@@ -713,7 +713,7 @@ next:
}
if (PageTransHuge(page)) {
count_vm_event(THP_FILE_ALLOC);
- __inc_node_page_state(page, NR_SHMEM_THPS);
+ __inc_lruvec_page_state(page, NR_SHMEM_THPS);
}
mapping->nrpages += nr;
__mod_lruvec_page_state(page, NR_FILE_PAGES, nr);
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
