lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20240822224015.93186-1-21cnbao@gmail.com>
Date: Fri, 23 Aug 2024 10:40:13 +1200
From: Barry Song <21cnbao@...il.com>
To: akpm@...ux-foundation.org,
	linux-mm@...ck.org
Cc: baolin.wang@...ux.alibaba.com,
	chrisl@...nel.org,
	david@...hat.com,
	hanchuanhua@...o.com,
	ioworker0@...il.com,
	kaleshsingh@...gle.com,
	kasong@...cent.com,
	linux-kernel@...r.kernel.org,
	ryan.roberts@....com,
	v-songbaohua@...o.com,
	yuanshuai@...o.com,
	ziy@...dia.com,
	usamaarif642@...il.com
Subject: [PATCH v3 0/2] mm: collect the number of anon mTHP

From: Barry Song <v-songbaohua@...o.com>

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.

-v3:
 * collect David's acked-by, thanks!
 * rename nr_split_deferred to meaningful name - nr_anon_partially_mapped,
   per David. Ryan, I assume you will like it after you come back :-)

-v2:
 https://lore.kernel.org/linux-mm/20240811224940.39876-1-21cnbao@gmail.com/
 * 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@gmail.com/

Barry Song (2):
  mm: collect the number of anon large folios
  mm: collect the number of anon large folios partially mapped

 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(-)

-- 
2.39.3 (Apple Git-146)


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ