linux-kernel - [PATCH mm-unstable v3 0/4] mm/mglru: Kconfig cleanup

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Message-ID: <20231220040037.883811-1-kinseyho@google.com>
Date: Wed, 20 Dec 2023 04:00:33 +0000
From: Kinsey Ho <kinseyho@...gle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org, yuzhao@...gle.com, 
	Kinsey Ho <kinseyho@...gle.com>
Subject: [PATCH mm-unstable v3 0/4] mm/mglru: Kconfig cleanup

This series is the result of the following discussion:
https://lore.kernel.org/47066176-bd93-55dd-c2fa-002299d9e034@linux.ibm.com/

It mainly avoids building the code that walks page tables on CPUs that
use it, i.e., those don't support hardware accessed bit. Specifically,
it introduces a new Kconfig to guard some of functions added by
commit bd74fdaea146 ("mm: multi-gen LRU: support page table walks")
on CPUs like POWER9, on which the series was tested.


Kinsey Ho (4):
  mm/mglru: add CONFIG_ARCH_HAS_HW_PTE_YOUNG
  mm/mglru: add CONFIG_LRU_GEN_WALKS_MMU
  mm/mglru: remove CONFIG_MEMCG
  mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE

 arch/Kconfig                   |   8 +
 arch/arm64/Kconfig             |   1 +
 arch/x86/Kconfig               |   1 +
 arch/x86/include/asm/pgtable.h |   6 -
 include/linux/memcontrol.h     |   2 +-
 include/linux/mm_types.h       |  16 +-
 include/linux/mmzone.h         |  28 +---
 include/linux/pgtable.h        |   2 +-
 kernel/fork.c                  |   2 +-
 mm/Kconfig                     |   4 +
 mm/vmscan.c                    | 271 ++++++++++++++++++---------------
 11 files changed, 174 insertions(+), 167 deletions(-)

-- 
2.43.0.472.g3155946c3a-goog