From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: linux-mm@kvack.org, akpm@linux-foundation.org,
mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org,
npiggin@gmail.com, christophe.leroy@csgroup.eu
Cc: Oscar Salvador <osalvador@suse.de>,
Mike Kravetz <mike.kravetz@oracle.com>,
Dan Williams <dan.j.williams@intel.com>,
Joao Martins <joao.m.martins@oracle.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Muchun Song <muchun.song@linux.dev>,
Will Deacon <will@kernel.org>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Subject: [PATCH v5 00/13] Add support for DAX vmemmap optimization for ppc64
Date: Tue, 18 Jul 2023 07:59:20 +0530 [thread overview]
Message-ID: <20230718022934.90447-1-aneesh.kumar@linux.ibm.com> (raw)
This patch series implements changes required to support DAX vmemmap
optimization for ppc64. The vmemmap optimization is only enabled with radix MMU
translation and 1GB PUD mapping with 64K page size. The patch series also split
hugetlb vmemmap optimization as a separate Kconfig variable so that
architectures can enable DAX vmemmap optimization without enabling hugetlb
vmemmap optimization. This should enable architectures like arm64 to enable DAX
vmemmap optimization while they can't enable hugetlb vmemmap optimization. More
details of the same are in patch "mm/vmemmap optimization: Split hugetlb and
devdax vmemmap optimization"
Changes from v4:
* Address review feedback
* Add the Reviewed-by:
Changes from v3:
* Rebase to latest linus tree
* Build fix with SPARSEMEM_VMEMMP disabled
* Add hash_pud_same outisde THP Kconfig
Changes from v2:
* Rebase to latest linus tree
* Address review feedback
Changes from V1:
* Fix make htmldocs warning
* Fix vmemmap allocation bugs with different alignment values.
* Correctly check for section validity to before we free vmemmap area
Aneesh Kumar K.V (13):
mm/hugepage pud: Allow arch-specific helper function to check huge
page pud support
mm: Change pudp_huge_get_and_clear_full take vm_area_struct as arg
mm/vmemmap: Improve vmemmap_can_optimize and allow architectures to
override
mm/vmemmap: Allow architectures to override how vmemmap optimization
works
mm: Add pud_same similar to __HAVE_ARCH_P4D_SAME
mm/huge pud: Use transparent huge pud helpers only with
CONFIG_TRANSPARENT_HUGEPAGE
mm/vmemmap optimization: Split hugetlb and devdax vmemmap optimization
powerpc/mm/trace: Convert trace event to trace event class
powerpc/book3s64/mm: Enable transparent pud hugepage
powerpc/book3s64/vmemmap: Switch radix to use a different vmemmap
handling function
powerpc/book3s64/radix: Add support for vmemmap optimization for radix
powerpc/book3s64/radix: Remove mmu_vmemmap_psize
powerpc/book3s64/radix: Add debug message to give more details of
vmemmap allocation
Documentation/mm/vmemmap_dedup.rst | 1 +
Documentation/powerpc/index.rst | 1 +
Documentation/powerpc/vmemmap_dedup.rst | 101 +++
arch/loongarch/Kconfig | 2 +-
arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/book3s/64/hash.h | 9 +
arch/powerpc/include/asm/book3s/64/pgtable.h | 155 ++++-
arch/powerpc/include/asm/book3s/64/radix.h | 47 ++
.../include/asm/book3s/64/tlbflush-radix.h | 2 +
arch/powerpc/include/asm/book3s/64/tlbflush.h | 8 +
arch/powerpc/include/asm/pgtable.h | 4 +
arch/powerpc/mm/book3s64/hash_pgtable.c | 2 +-
arch/powerpc/mm/book3s64/pgtable.c | 78 +++
arch/powerpc/mm/book3s64/radix_pgtable.c | 573 ++++++++++++++++--
arch/powerpc/mm/book3s64/radix_tlb.c | 7 +
arch/powerpc/mm/init_64.c | 37 +-
arch/powerpc/platforms/Kconfig.cputype | 1 +
arch/riscv/Kconfig | 2 +-
arch/s390/Kconfig | 2 +-
arch/x86/Kconfig | 3 +-
drivers/nvdimm/pfn_devs.c | 2 +-
fs/Kconfig | 2 +-
include/linux/mm.h | 29 +-
include/linux/pgtable.h | 12 +-
include/trace/events/thp.h | 33 +-
mm/Kconfig | 5 +-
mm/debug_vm_pgtable.c | 2 +-
mm/huge_memory.c | 2 +-
mm/mm_init.c | 2 +-
mm/mremap.c | 2 +-
mm/sparse-vmemmap.c | 3 +
31 files changed, 1048 insertions(+), 82 deletions(-)
create mode 100644 Documentation/powerpc/vmemmap_dedup.rst
--
2.41.0
next reply other threads:[~2023-07-18 2:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-18 2:29 Aneesh Kumar K.V [this message]
2023-07-18 2:29 ` [PATCH v5 01/13] mm/hugepage pud: Allow arch-specific helper function to check huge page pud support Aneesh Kumar K.V
2023-07-18 2:29 ` [PATCH v5 04/13] mm/vmemmap: Allow architectures to override how vmemmap optimization works Aneesh Kumar K.V
2023-07-18 2:29 ` [PATCH v5 05/13] mm: Add pud_same similar to __HAVE_ARCH_P4D_SAME Aneesh Kumar K.V
2023-07-18 2:29 ` [PATCH v5 07/13] mm/vmemmap optimization: Split hugetlb and devdax vmemmap optimization Aneesh Kumar K.V
2023-07-18 2:29 ` [PATCH v5 08/13] powerpc/mm/trace: Convert trace event to trace event class Aneesh Kumar K.V
2023-07-18 2:29 ` [PATCH v5 09/13] powerpc/book3s64/mm: Enable transparent pud hugepage Aneesh Kumar K.V
2023-07-18 2:29 ` [PATCH v5 10/13] powerpc/book3s64/vmemmap: Switch radix to use a different vmemmap handling function Aneesh Kumar K.V
2023-07-24 18:29 ` Aneesh Kumar K.V
2023-07-24 18:48 ` Andrew Morton
2023-07-18 2:29 ` [PATCH v5 11/13] powerpc/book3s64/radix: Add support for vmemmap optimization for radix Aneesh Kumar K.V
2023-07-18 2:29 ` [PATCH v5 12/13] powerpc/book3s64/radix: Remove mmu_vmemmap_psize Aneesh Kumar K.V
2023-07-18 2:29 ` [PATCH v5 13/13] powerpc/book3s64/radix: Add debug message to give more details of vmemmap allocation Aneesh Kumar K.V
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