Add support for fast mremap
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b4 am [email protected]Versions newest first
- v1 Latest3 patches 7 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | mm: treewide: remove unused address argument from pte_alloc functions (v2)arch/ arch/ arch/ +41 more | +97 | 1 reply | |
| 2/3 | mm: speed up mremap by 20x on large regions (v4)arch/ mm/ | +65 | 0 replies | |
| 3/3 | mm: select HAVE_MOVE_PMD in x86 for faster mremaparch/ | +1 | 0 replies |
Reviews trailers per patch
All 3 patches have a Reviewed-by or Acked-by.
| Patch | Kirill A. Shutemov |
|---|---|
| 1/3 | A-b |
| 2/3 | A-b |
| 3/3 | A-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH -next 0/3] Add support for fast mremap
Hi,
Here is the latest "fast mremap" series. This just a repost with Kirill's Acked-bys added. I would like this to be considered for linux -next. I also dropped the CONFIG enablement patch for arm64 since I am yet to test it with the new TLB flushing code that is in very recent kernel releases. (None of my arm64 devices run mainline right now.) so I will post the arm64 enablement once I get to that. The performance numbers in the series are for x86.
List of patches in series:
(1) mm: select HAVE_MOVE_PMD in x86 for faster mremap
(2) mm: speed up mremap by 20x on large regions (v4) v1->v2: Added support for per-arch enablement (Kirill Shutemov) v2->v3: Updated commit message to state the optimization may also run for non-thp type of systems (Daniel Col).v3->v4: Remove useless pmd_lock check (Kirill Shutemov)
Rebased ontop of Linus's master, updated perf results based on x86 testing. Added Kirill's Acks.
(3) mm: treewide: remove unused address argument from pte_alloc functions (v2) v1->v2: fix arch/um/ prototype which was missed in v1 (Anton Ivanov) update changelog with manual fixups for m68k and microblaze.
not included - (4) mm: select HAVE_MOVE_PMD in arm64 for faster mremap
This patch is dropped since last posting pending further performance testing on arm64 with new TLB gather updates. See notes in patch titled "mm: speed up mremap by 500x on large regions" for more details.
Joel Fernandes (Google) (3):
mm: treewide: remove unused address argument from pte_alloc functions
(v2)
mm: speed up mremap by 20x on large regions (v4)
mm: select HAVE_MOVE_PMD in x86 for faster mremap
arch/Kconfig | 5 ++ arch/alpha/include/asm/pgalloc.h | 6 +- arch/arc/include/asm/pgalloc.h | 5 +- arch/arm/include/asm/pgalloc.h | 4 +- arch/arm64/include/asm/pgalloc.h | 4 +- arch/hexagon/include/asm/pgalloc.h | 6 +- arch/ia64/include/asm/pgalloc.h | 5 +- arch/m68k/include/asm/mcf_pgalloc.h | 8 +-- arch/m68k/include/asm/motorola_pgalloc.h | 4 +- arch/m68k/include/asm/sun3_pgalloc.h | 6 +- arch/microblaze/include/asm/pgalloc.h | 19 +----- arch/microblaze/mm/pgtable.c | 3 +- arch/mips/include/asm/pgalloc.h | 6 +- arch/nds32/include/asm/pgalloc.h | 5 +- arch/nios2/include/asm/pgalloc.h | 6 +- arch/openrisc/include/asm/pgalloc.h | 5 +- arch/openrisc/mm/ioremap.c | 3 +- arch/parisc/include/asm/pgalloc.h | 4 +- arch/powerpc/include/asm/book3s/32/pgalloc.h | 4 +- arch/powerpc/include/asm/book3s/64/pgalloc.h | 12 ++-- arch/powerpc/include/asm/nohash/32/pgalloc.h | 4 +- arch/powerpc/include/asm/nohash/64/pgalloc.h | 6 +- arch/powerpc/mm/pgtable-book3s64.c | 2 +- arch/powerpc/mm/pgtable_32.c | 4 +- arch/riscv/include/asm/pgalloc.h | 6 +- arch/s390/include/asm/pgalloc.h | 4 +- arch/sh/include/asm/pgalloc.h | 6 +- arch/sparc/include/asm/pgalloc_32.h | 5 +- arch/sparc/include/asm/pgalloc_64.h | 6 +- arch/sparc/mm/init_64.c | 6 +- arch/sparc/mm/srmmu.c | 4 +- arch/um/include/asm/pgalloc.h | 4 +- arch/um/kernel/mem.c | 4 +- arch/unicore32/include/asm/pgalloc.h | 4 +- arch/x86/Kconfig | 1 + arch/x86/include/asm/pgalloc.h | 4 +- arch/x86/mm/pgtable.c | 4 +- arch/xtensa/include/asm/pgalloc.h | 8 +-- include/linux/mm.h | 13 ++-- mm/huge_memory.c | 8 +-- mm/kasan/kasan_init.c | 2 +- mm/memory.c | 17 +++--- mm/migrate.c | 2 +- mm/mremap.c | 62 +++++++++++++++++++- mm/userfaultfd.c | 2 +- virt/kvm/arm/mmu.c | 2 +- 46 files changed, 163 insertions(+), 147 deletions(-)
Signature · 1 line
2.19.1.930.g4563a0d9d0-goog