The patch titled
Subject: thp, vmstats: add counters for huge file pages
has been added to the -mm tree. Its filename is
thp-vmstats-add-counters-for-huge-file-pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/thp-vmstats-add-counters-for-huge-file-pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/thp-vmstats-add-counters-for-huge-file-pages.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: thp, vmstats: add counters for huge file pages
THP_FILE_ALLOC: how many times huge page was allocated and put page
cache.
THP_FILE_MAPPED: how many times file huge page was mapped.
Link: http://lkml.kernel.org/r/1466021202-61880-13-git-send-email-kirill.shutemov@xxxxxxxxxxxxxxx
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/vm_event_item.h | 7 +++++++
mm/memory.c | 1 +
mm/vmstat.c | 2 ++
3 files changed, 10 insertions(+)
diff -puN include/linux/vm_event_item.h~thp-vmstats-add-counters-for-huge-file-pages include/linux/vm_event_item.h
--- a/include/linux/vm_event_item.h~thp-vmstats-add-counters-for-huge-file-pages
+++ a/include/linux/vm_event_item.h
@@ -70,6 +70,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PS
THP_FAULT_FALLBACK,
THP_COLLAPSE_ALLOC,
THP_COLLAPSE_ALLOC_FAILED,
+ THP_FILE_ALLOC,
+ THP_FILE_MAPPED,
THP_SPLIT_PAGE,
THP_SPLIT_PAGE_FAILED,
THP_DEFERRED_SPLIT_PAGE,
@@ -100,4 +102,9 @@ enum vm_event_item { PGPGIN, PGPGOUT, PS
NR_VM_EVENT_ITEMS
};
+#ifndef CONFIG_TRANSPARENT_HUGEPAGE
+#define THP_FILE_ALLOC ({ BUILD_BUG(); 0; })
+#define THP_FILE_MAPPED ({ BUILD_BUG(); 0; })
+#endif
+
#endif /* VM_EVENT_ITEM_H_INCLUDED */
diff -puN mm/memory.c~thp-vmstats-add-counters-for-huge-file-pages mm/memory.c
--- a/mm/memory.c~thp-vmstats-add-counters-for-huge-file-pages
+++ a/mm/memory.c
@@ -2969,6 +2969,7 @@ static int do_set_pmd(struct fault_env *
/* fault is handled */
ret = 0;
+ count_vm_event(THP_FILE_MAPPED);
out:
spin_unlock(fe->ptl);
return ret;
diff -puN mm/vmstat.c~thp-vmstats-add-counters-for-huge-file-pages mm/vmstat.c
--- a/mm/vmstat.c~thp-vmstats-add-counters-for-huge-file-pages
+++ a/mm/vmstat.c
@@ -817,6 +817,8 @@ const char * const vmstat_text[] = {
"thp_fault_fallback",
"thp_collapse_alloc",
"thp_collapse_alloc_failed",
+ "thp_file_alloc",
+ "thp_file_mapped",
"thp_split_page",
"thp_split_page_failed",
"thp_deferred_split_page",
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
revert-mm-make-faultaround-produce-old-ptes.patch
revert-mm-disable-fault-around-on-emulated-access-bit-architecture.patch
mm-make-swapin-readahead-to-improve-thp-collapse-rate-fix.patch
mm-make-swapin-readahead-to-improve-thp-collapse-rate-fix-2.patch
mm-make-swapin-readahead-to-improve-thp-collapse-rate-fix-3.patch
mm-thp-make-swapin-readahead-under-down_read-of-mmap_sem-fix.patch
khugepaged-recheck-pmd-after-mmap_sem-re-acquired.patch
thp-mlock-update-unevictable-lrutxt.patch
mm-do-not-pass-mm_struct-into-handle_mm_fault.patch
mm-introduce-fault_env.patch
mm-postpone-page-table-allocation-until-we-have-page-to-map.patch
rmap-support-file-thp.patch
mm-introduce-do_set_pmd.patch
thp-vmstats-add-counters-for-huge-file-pages.patch
thp-support-file-pages-in-zap_huge_pmd.patch
thp-handle-file-pages-in-split_huge_pmd.patch
thp-handle-file-cow-faults.patch
thp-skip-file-huge-pmd-on-copy_huge_pmd.patch
thp-prepare-change_huge_pmd-for-file-thp.patch
thp-run-vma_adjust_trans_huge-outside-i_mmap_rwsem.patch
thp-file-pages-support-for-split_huge_page.patch
thp-mlock-do-not-mlock-pte-mapped-file-huge-pages.patch
vmscan-split-file-huge-pages-before-paging-them-out.patch
page-flags-relax-policy-for-pg_mappedtodisk-and-pg_reclaim.patch
radix-tree-implement-radix_tree_maybe_preload_order.patch
filemap-prepare-find-and-delete-operations-for-huge-pages.patch
truncate-handle-file-thp.patch
mm-rmap-account-shmem-thp-pages.patch
shmem-prepare-huge=-mount-option-and-sysfs-knob.patch
shmem-add-huge-pages-support.patch
shmem-thp-respect-madv_nohugepage-for-file-mappings.patch
thp-extract-khugepaged-from-mm-huge_memoryc.patch
khugepaged-move-up_readmmap_sem-out-of-khugepaged_alloc_page.patch
shmem-make-shmem_inode_info-lock-irq-safe.patch
khugepaged-add-support-of-collapse-for-tmpfs-shmem-pages.patch
thp-introduce-config_transparent_huge_pagecache.patch
shmem-split-huge-pages-beyond-i_size-under-memory-pressure.patch
thp-update-documentation-vm-transhugefilesystems-proctxt.patch
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