diff options
| author | Lance Yang <[email protected]> | 2024-06-28 21:07:49 +0800 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2024-07-12 15:52:13 -0700 |
| commit | f216c845f3c772e54d27fe209fd300b10e7bf54a (patch) | |
| tree | dfd229f371f1e32a8dd636d1687131f85dd423c8 /include/linux | |
| parent | d468f1b8cb8e4c28ebb2282af2dd4021b60df7cb (diff) | |
mm: add per-order mTHP split counters
Patch series "mm: introduce per-order mTHP split counters", v3.
At present, the split counters in THP statistics no longer include
PTE-mapped mTHP. Therefore, we want to introduce per-order mTHP split
counters to monitor the frequency of mTHP splits. This will assist
developers in better analyzing and optimizing system performance.
/sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats
split
split_failed
split_deferred
This patch (of 2):
Currently, the split counters in THP statistics no longer include
PTE-mapped mTHP. Therefore, we propose introducing per-order mTHP split
counters to monitor the frequency of mTHP splits. This will help
developers better analyze and optimize system performance.
/sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats
split
split_failed
split_deferred
[[email protected]: make things more readable, per Barry and Baolin]
Link: https://lkml.kernel.org/r/[email protected]
[[email protected]: use == for `order' test, per David]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Mingzhe Yang <[email protected]>
Signed-off-by: Lance Yang <[email protected]>
Reviewed-by: Ryan Roberts <[email protected]>
Acked-by: Barry Song <[email protected]>
Reviewed-by: Baolin Wang <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Cc: Bang Li <[email protected]>
Cc: Yang Shi <[email protected]>
Cc: Zi Yan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/huge_mm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 212cca384d7e..cee3c5da8f0e 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -284,6 +284,9 @@ enum mthp_stat_item { MTHP_STAT_FILE_ALLOC, MTHP_STAT_FILE_FALLBACK, MTHP_STAT_FILE_FALLBACK_CHARGE, + MTHP_STAT_SPLIT, + MTHP_STAT_SPLIT_FAILED, + MTHP_STAT_SPLIT_DEFERRED, __MTHP_STAT_COUNT }; |