linux-kernel - [PATCH v3 0/3] Add update_mmu_tlb

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Date: Sat, 18 May 2024 15:49:11 +0800
From: "Bang Li" <libang.li@...group.com>
To: akpm@...ux-foundation.org,
	chenhuacai@...nel.org,
	tsbogend@...ha.franken.de,
	paul.walmsley@...ive.com,
	palmer@...belt.com,
	chris@...kel.net,
	jcmvbkbc@...il.com
Cc:  <linux-kernel@...r.kernel.org>,
   <linux-mm@...ck.org>,
   <loongarch@...ts.linux.dev>,
   <linux-riscv@...ts.infradead.org>,
   <david@...hat.com>,
   <ryan.roberts@....com>,
   <ioworker0@...il.com>,
   <libang.linux@...il.com>,
  "Bang Li" <libang.li@...group.com>
Subject: [PATCH v3 0/3] Add update_mmu_tlb_range() to simplify code

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

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 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/20240429103346.59115-1-libang.li@antgroup.com/
[2] https://lore.kernel.org/linux-mm/20240506155120.83105-1-libang.li@antgroup.com/

Bang Li (3):
  mm: Add update_mmu_tlb_range()
  mm: Refactor update_mmu_tlb()
  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(-)

-- 
2.19.1.6.gb485710b