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| author | Bang Li <libang.li@antgroup.com> | 2024-05-22 08:12:02 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-04 04:29:57 +0200 |
| commit | 23b1b44e6c61295084284aa7d87db863a7802b92 (patch) | |
| tree | 19c45a5f26010f36d96ef58c00787e8ad2b89344 /arch/xtensa | |
| parent | selftests/mm: va_high_addr_switch: dynamically initialize testcases to enable... (diff) | |
| download | linux-23b1b44e6c61295084284aa7d87db863a7802b92.tar.xz linux-23b1b44e6c61295084284aa7d87db863a7802b92.zip | |
mm: add update_mmu_tlb_range()
Patch series "Add update_mmu_tlb_range() to simplify code", v4.
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 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.
This patch (of 3):
Add update_mmu_tlb_range(), we can batch update tlb of an address range.
Link: https://lkml.kernel.org/r/20240522061204.117421-1-libang.li@antgroup.com
Link: https://lkml.kernel.org/r/20240522061204.117421-2-libang.li@antgroup.com
Signed-off-by: Bang Li <libang.li@antgroup.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/include/asm/pgtable.h | 3 | ||||
| -rw-r--r-- | arch/xtensa/mm/tlb.c | 6 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h index 9a7e5e57ee9a..436158bd9030 100644 --- a/arch/xtensa/include/asm/pgtable.h +++ b/arch/xtensa/include/asm/pgtable.h @@ -413,6 +413,9 @@ typedef pte_t *pte_addr_t; void update_mmu_tlb(struct vm_area_struct *vma, unsigned long address, pte_t *ptep); #define __HAVE_ARCH_UPDATE_MMU_TLB +void update_mmu_tlb_range(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep, unsigned int nr); +#define update_mmu_tlb_range update_mmu_tlb_range #endif /* !defined (__ASSEMBLY__) */ diff --git a/arch/xtensa/mm/tlb.c b/arch/xtensa/mm/tlb.c index d8b60d6e50a8..05efba86b870 100644 --- a/arch/xtensa/mm/tlb.c +++ b/arch/xtensa/mm/tlb.c @@ -169,6 +169,12 @@ void update_mmu_tlb(struct vm_area_struct *vma, local_flush_tlb_page(vma, address); } +void update_mmu_tlb_range(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep, unsigned int nr) +{ + local_flush_tlb_range(vma, address, address + PAGE_SIZE * nr); +} + #ifdef CONFIG_DEBUG_TLB_SANITY static unsigned get_pte_for_vaddr(unsigned vaddr) |