| From: |
| Lance Yang <ioworker0-AT-gmail.com> |
| To: |
| akpm-AT-linux-foundation.org |
| Subject: |
| [PATCH v3 0/2] mm: introduce per-order mTHP split counters |
| Date: |
| Thu, 04 Jul 2024 09:29:03 +0800 |
| Message-ID: |
| <20240704012905.42971-1-ioworker0@gmail.com> |
| Cc: |
| dj456119-AT-gmail.com, 21cnbao-AT-gmail.com, ryan.roberts-AT-arm.com, david-AT-redhat.com, shy828301-AT-gmail.com, ziy-AT-nvidia.com, libang.li-AT-antgroup.com, baolin.wang-AT-linux.alibaba.com, linux-kernel-AT-vger.kernel.org, linux-mm-AT-kvack.org, Lance Yang <ioworker0-AT-gmail.com> |
| Archive-link: |
| Article |
Hi all,
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
---
Changes since v2 [2]
====================
- mm: add per-order mTHP split counters
- Pick AB from Barry - thanks!
- Pick RB from Baolin - thanks!
- Pick RB from Ryan - thanks!
- Make things more readable (per Barry and Baolin)
- mm: add docs for per-order mTHP split counters
- Pick RB from Barry - thanks!
- Improve the doc as suggested by Ryan
- Remove the outdated note (per Ryan)
Changes since v1 [1]
====================
- mm: add per-order mTHP split counters
- Update the changelog
- Drop '_page' from mTHP split counter names (per David and Ryan)
- Store the order of the folio in a variable and reuse it later
(per Bang)
- mm: add docs for per-order mTHP split counters
- Improve the doc as suggested by Ryan
[1] https://lore.kernel.org/linux-mm/20240424135148.30422-1-i...
[2] https://lore.kernel.org/linux-mm/20240628130750.73097-1-i...
Lance Yang (2):
mm: add per-order mTHP split counters
mm: add docs for per-order mTHP split counters
Documentation/admin-guide/mm/transhuge.rst | 20 ++++++++++++++++----
include/linux/huge_mm.h | 3 +++
mm/huge_memory.c | 12 ++++++++++--
3 files changed, 29 insertions(+), 6 deletions(-)
base-commit: ec34ecf3924f09a694e5c7d8d7e785b82f67f9f0
--
2.45.2
