linux-kernel - [PATCH v1 0/4] Page counters optimizations

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Date: Fri,  3 May 2024 13:18:31 -0700
From: Roman Gushchin <roman.gushchin@...ux.dev>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Muchun Song <muchun.song@...ux.dev>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...nel.org>,
	Shakeel Butt <shakeel.butt@...ux.dev>,
	Frank van der Linden <fvdl@...gle.com>,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Roman Gushchin <roman.gushchin@...cruise.com>
Subject: [PATCH v1 0/4] Page counters optimizations

From: Roman Gushchin <roman.gushchin@...cruise.com>

This patchset reorganizes page_counter structures which helps to make
memory cgroup and hugetlb cgroup structures smaller (20%-35%) and
more cache-effective. It also eliminates useless tracking of protected
memory usage when it's not needed.

include/linux/hugetlb.h        |   4 +-
 include/linux/hugetlb_cgroup.h |   9 +---
 include/linux/memcontrol.h     |  15 ++----
 include/linux/page_counter.h   |  88 +++++++++++++++++++++++++-------
 mm/hugetlb.c                   |  14 +++--
 mm/hugetlb_cgroup.c            | 150 ++++++++++++++++++++----------------------------------
 mm/memcontrol.c                | 351 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------------------------------------------------------------------
 mm/page_counter.c              |  76 ++++++++++++++++++----------
 8 files changed, 340 insertions(+), 367 deletions(-)


Roman Gushchin (4):
  mm: memcg: convert enum res_type to mem_counter_type
  mm: memcg: merge multiple page_counters into a single structure
  mm: memcg: don't call propagate_protected_usage() needlessly
  mm: page_counters: initialize usage using ATOMIC_LONG_INIT() macro

 include/linux/hugetlb.h        |   4 +-
 include/linux/hugetlb_cgroup.h |   9 +-
 include/linux/memcontrol.h     |  15 +-
 include/linux/page_counter.h   |  88 +++++++--
 mm/hugetlb.c                   |  14 +-
 mm/hugetlb_cgroup.c            | 150 +++++---------
 mm/memcontrol.c                | 351 ++++++++++++++-------------------
 mm/page_counter.c              |  76 ++++---
 8 files changed, 340 insertions(+), 367 deletions(-)

-- 
2.43.2