[PATCH 0/8] per-memcg-per-node kmem accounting

[Alexandre Ghiti <alex@ghiti.fr>]

This series pursues the work initiated by Joshua [1]. We need kernel  
memory to be accounted on a per-node basis in order to be able to  
know the memcg and physical memory association.  
  
This series takes advantage of the recent introduction of per-node  
obj_cgroup [2] and makes those obj_cgroup tied to their numa node.  
  
The bulk of the series is percpu per-node accounting: percpu  
"precharges" the memcg before we know the actual location of the pages  
it uses, so charging and accounting had to be split. All other kmem 
users (slab, zswap, __memcg_kmem_charge_page) are straightforward 
conversions (zswap support is limited in this series because Joshua 
is working on it in parallel [3]). 
 
Thanks Joshua for your early feedbacks! 
  
[1] https://lore.kernel.org/linux-mm/20260404033844.1892595-1-joshua.hahnjy@gmail.com/  
[2] https://lore.kernel.org/linux-mm/56c04b1c5d54f75ccdc12896df6c1ca35403ecc3.1772711148.git.zhengqi.arch@bytedance.com/  
[3] https://lore.kernel.org/linux-mm/20260311195153.4013476-1-joshua.hahnjy@gmail.com/

Alexandre Ghiti (8):
  mm: memcontrol: propagate NMI slab stats to memcg vmstats
  mm: percpu: charge obj_exts allocation with __GFP_ACCOUNT
  mm: percpu: Split memcg charging and kmem accounting
  mm: memcontrol: track MEMCG_KMEM per NUMA node
  mm: memcontrol: per-node kmem accounting for page charges
  mm: slab: per-node kmem accounting for slab
  mm: percpu: per-node kmem accounting using local credit
  mm: zswap: per-node kmem accounting for zswap/zsmalloc

 include/linux/memcontrol.h |  27 +++++--
 include/linux/mmzone.h     |   1 +
 include/linux/zsmalloc.h   |   2 +
 mm/memcontrol.c            | 150 ++++++++++++++++++++++++++++---------
 mm/percpu-internal.h       |  16 +---
 mm/percpu.c                |  90 ++++++++++++++++++++--
 mm/vmstat.c                |   1 +
 mm/zsmalloc.c              |  11 +++
 mm/zswap.c                 |   9 ++-
 9 files changed, 242 insertions(+), 65 deletions(-)

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2.54.0