[PATCH mm-unstable v4 0/5] mm/mglru: Kconfig cleanup

[Kinsey Ho]

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

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.
---
v4: fix kernel build bot error by adding dummy pmd_dirty()

v3: https://lore.kernel.org/20231220040037.883811-1-kinseyho@xxxxxxxxxx/


Kinsey Ho (5):
  mm/mglru: add CONFIG_ARCH_HAS_HW_PTE_YOUNG
  mm/mglru: add CONFIG_LRU_GEN_WALKS_MMU
  mm/mglru: remove CONFIG_MEMCG
  mm/mglru: add dummy pmd_dirty()
  mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE

 arch/Kconfig                         |   8 +
 arch/arm64/Kconfig                   |   1 +
 arch/loongarch/include/asm/pgtable.h |   1 +
 arch/mips/include/asm/pgtable.h      |   1 +
 arch/riscv/include/asm/pgtable.h     |   1 +
 arch/s390/include/asm/pgtable.h      |   1 +
 arch/sparc/include/asm/pgtable_64.h  |   1 +
 arch/x86/Kconfig                     |   1 +
 arch/x86/include/asm/pgtable.h       |   7 +-
 include/linux/memcontrol.h           |   2 +-
 include/linux/mm_types.h             |  16 +-
 include/linux/mmzone.h               |  28 +--
 include/linux/pgtable.h              |   9 +-
 kernel/fork.c                        |   2 +-
 mm/Kconfig                           |   4 +
 mm/vmscan.c                          | 271 ++++++++++++++-------------
 16 files changed, 187 insertions(+), 167 deletions(-)

-- 
2.43.0.472.g3155946c3a-goog