[v4,0/3] Add update_mmu_tlb_range() to simplify code

Message

Bang Li May 22, 2024, 6:12 a.m. UTC

This series of commits mainly adds the update_mmu_tlb_range() to
batch update tlb in an address range and implement update_mmu_tlb()
using update_mmu_tlb_range().

After the commit 19eaf44954df ("mm: thp: support allocation of anonymous
multi-size THP"), We may need to batch update tlb of a certain address
range by calling update_mmu_tlb() in a loop. Using the
update_mmu_tlb_range(), we can simplify the code and possibly reduce the
execution of some unnecessary code in some architectures.

Thanks,
Bang

Changes since v3 [3]:
 - Add acked-by from David Hildenbrand (patch #2 and patch #3) - thanks!
 - Add reviewed-by from Lance Yang (patch #3) - thanks!
 - Move the general architecture update_mmu_tlb_range() from patch #2 to
   patch #1 (per David)
 - Update patch #2 commit log (per David)

Changes since v2 [2]:
 - Use generic architecture to implement update_mmu_tlb() (per Ryan)

Changes since v1 [1]:
 - Add __HAVE_ARCH_UPDATE_MMU_TLB_RANGE macro (per Lance Yang)

[1] https://lore.kernel.org/linux-mm/[e-mail]/
[2] https://lore.kernel.org/linux-mm/[e-mail]/
[3] https://lore.kernel.org/linux-mm/[e-mail]/

Bang Li (3):
  mm: Add update_mmu_tlb_range()
  mm: implement update_mmu_tlb() using update_mmu_tlb_range()
  mm: Use update_mmu_tlb_range() to simplify code

 arch/loongarch/include/asm/pgtable.h |  4 ++--
 arch/mips/include/asm/pgtable.h      |  4 ++--
 arch/riscv/include/asm/pgtable.h     |  4 ++--
 arch/xtensa/include/asm/pgtable.h    |  6 +++---
 arch/xtensa/mm/tlb.c                 |  6 +++---
 include/linux/pgtable.h              | 11 ++++++++---
 mm/memory.c                          |  4 +---
 7 files changed, 21 insertions(+), 18 deletions(-)