[PATCH v2 0/2] mm: collect the number of anon mTHP
From: Barry Song
Date: Sun Aug 11 2024 - 18:50:05 EST
From: Barry Song <v-songbaohua@xxxxxxxx>
Knowing the number of anon mTHPs in the system is crucial for performance
analysis. It helps in understanding the ratio and distribution of
mTHPs versus small folios throughout the system.
Additionally, partial unmapping by userspace can lead to significant waste
of mTHPs over time and increase memory reclamation pressure. We need this
information for comprehensive system tuning.
-v2:
* don't rely on rmap to implement - 1, uses folio_free, split etc.
Thanks for David's comment;
* rename sys counters and refine doc. Thanks for Ryan's comment;
-v1:
https://lore.kernel.org/all/20240808010457.228753-1-21cnbao@xxxxxxxxx/
Barry Song (2):
mm: collect the number of anon large folios
mm: collect the number of anon large folios on split_deferred list
Documentation/admin-guide/mm/transhuge.rst | 10 ++++++++++
include/linux/huge_mm.h | 16 ++++++++++++++--
mm/huge_memory.c | 19 ++++++++++++++++---
mm/migrate.c | 4 ++++
mm/page_alloc.c | 5 ++++-
mm/rmap.c | 1 +
6 files changed, 49 insertions(+), 6 deletions(-)
--
2.34.1