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(-)
--
2.19.1.930.g4563a0d9d0-goog
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