[PATCH v2 0/6] Account page tables at all levels

[Kevin Brodsky]

v1: https://lore.kernel.org/linux-mm/20241219164425.2277022-1-kevin.brodsky@arm.com/

This series should be considered in conjunction with Qi's series [1].
Together, they ensure that page table ctor/dtor are called at all levels
(PTE to PGD) and all architectures, where page tables are regular pages.
Besides the improvement in accounting and general cleanup, this also
create a single place where construction/destruction hooks can be called
for all page tables, namely the now-generic pagetable_dtor() introduced
by Qi, and __pagetable_ctor() introduced in this series.

v2 is essentially v1 rebased on top of mm-unstable, which includes Qi's
v4 series. A number of patches from v1 were dropped:

* v1 patch 4 is superseded by patch 6 in Qi's series.
* v1 patch 5 and 6 moved to Qi's series from v3 onwards.
* v1 patch 7 is superseded by patch 4 in Qi's series.

Changes from v1 in the remaining patches:

* Patch 1 only introduces __pagetable_ctor() as there is now a single
  generic pagetable_dtor(). 

* Patch 3 and 6: in arch/m68k/mm/motorola.c, free_pointer_table() can
  now unconditionally call pagetable_dtor() since it is the same for all
  levels.

* Patch 6 just uses pagetable_dtor() instead of introducing
  pagetable_pgd_dtor().

* Added Dave Hansen's Acked-by to all patches.

- Kevin

[1] https://lore.kernel.org/linux-mm/cover.1735549103.git.zhengqi.arch@bytedance.com/
---
Cc: Andrew Morton <akpm at linux-foundation.org>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Dave Hansen <dave.hansen at linux.intel.com>
Cc: Linus Walleij <linus.walleij at linaro.org>
Cc: Andy Lutomirski <luto at kernel.org>
Cc: Peter Zijlstra <peterz at infradead.org>
Cc: "Mike Rapoport (IBM)" <rppt at kernel.org>
Cc: Ryan Roberts <ryan.roberts at arm.com>
Cc: Thomas Gleixner <tglx at linutronix.de>
Cc: Will Deacon <will at kernel.org>
Cc: Matthew Wilcox <willy at infradead.org>
Cc: Qi Zheng <zhengqi.arch at bytedance.com>
Cc: linux-alpha at vger.kernel.org
Cc: linux-arch at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-csky at vger.kernel.org
Cc: linux-hexagon at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
Cc: linux-m68k at lists.linux-m68k.org
Cc: linux-mips at vger.kernel.org
Cc: linux-openrisc at vger.kernel.org
Cc: linux-parisc at vger.kernel.org
Cc: linux-riscv at lists.infradead.org
Cc: linux-s390 at vger.kernel.org
Cc: linux-snps-arc at lists.infradead.org
Cc: linux-um at lists.infradead.org
Cc: loongarch at lists.linux.dev
Cc: x86 at kernel.org
---
Kevin Brodsky (6):
  mm: Move common part of pagetable_*_ctor to helper
  parisc: mm: Ensure pagetable_pmd_[cd]tor are called
  m68k: mm: Add calls to pagetable_pmd_[cd]tor
  ARM: mm: Rename PGD helpers
  asm-generic: pgalloc: Provide generic __pgd_{alloc,free}
  mm: Introduce ctor/dtor at PGD level

 arch/alpha/mm/init.c                     |  2 +-
 arch/arc/include/asm/pgalloc.h           |  9 ++----
 arch/arm/mm/pgd.c                        | 16 +++++-----
 arch/arm64/mm/pgd.c                      |  4 +--
 arch/csky/include/asm/pgalloc.h          |  2 +-
 arch/hexagon/include/asm/pgalloc.h       |  2 +-
 arch/loongarch/mm/pgtable.c              |  7 ++---
 arch/m68k/include/asm/mcf_pgalloc.h      |  3 +-
 arch/m68k/include/asm/motorola_pgalloc.h |  6 ++--
 arch/m68k/include/asm/sun3_pgalloc.h     |  2 +-
 arch/m68k/mm/motorola.c                  | 21 +++++++++----
 arch/microblaze/include/asm/pgalloc.h    |  7 +----
 arch/mips/include/asm/pgalloc.h          |  6 ----
 arch/mips/mm/pgtable.c                   |  8 ++---
 arch/nios2/mm/pgtable.c                  |  3 +-
 arch/openrisc/include/asm/pgalloc.h      |  6 ++--
 arch/parisc/include/asm/pgalloc.h        | 39 ++++++++----------------
 arch/riscv/include/asm/pgalloc.h         |  3 +-
 arch/s390/include/asm/pgalloc.h          |  9 +++++-
 arch/um/kernel/mem.c                     |  7 ++---
 arch/x86/mm/pgtable.c                    | 24 +++++++--------
 arch/xtensa/include/asm/pgalloc.h        |  2 +-
 include/asm-generic/pgalloc.h            | 28 ++++++++++++++++-
 include/linux/mm.h                       | 31 ++++++++++---------
 24 files changed, 126 insertions(+), 121 deletions(-)


base-commit: e2ce19225db5818f5dc22864cd225f8c425c3775
-- 
2.47.0