| Message ID | 20201119003829.1282810-1-atish.patra@wdc.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Unify NUMA implementation between ARM64 & RISC-V | expand |
On Wed, Nov 18, 2020 at 4:39 PM Atish Patra <atish.patra@wdc.com> wrote: > > This series attempts to move the ARM64 numa implementation to common > code so that RISC-V can leverage that as well instead of reimplementing > it again. > > RISC-V specific bits are based on initial work done by Greentime Hu [1] but > modified to reuse the common implementation to avoid duplication. > > [1] https://lkml.org/lkml/2020/1/10/233 > > This series has been tested on qemu with numa enabled for both RISC-V & ARM64. > It would be great if somebody can test it on numa capable ARM64 hardware platforms. > This patch series doesn't modify the maintainers list for the common code (arch_numa) > as I am not sure if somebody from ARM64 community or Greg should take up the > maintainership. Ganapatrao was the original author of the arm64 version. > I would be happy to update that in the next revision once it is decided. > > # numactl --hardware > available: 2 nodes (0-1) > node 0 cpus: 0 1 2 3 > node 0 size: 486 MB > node 0 free: 470 MB > node 1 cpus: 4 5 6 7 > node 1 size: 424 MB > node 1 free: 408 MB > node distances: > node 0 1 > 0: 10 20 > 1: 20 10 > # numactl -show > policy: default > preferred node: current > physcpubind: 0 1 2 3 4 5 6 7 > cpubind: 0 1 > nodebind: 0 1 > membind: 0 1 > > The patches are also available at > https://github.com/atishp04/linux/tree/5.11_numa_unified_v5 > > For RISC-V, the following qemu series is a pre-requisite(already available in upstream) > https://patchwork.kernel.org/project/qemu-devel/list/?series=303313 > > Testing: > RISC-V: > Tested in Qemu and 2 socket OmniXtend FPGA. > > ARM64: > 2 socket kunpeng920 (4 nodes around 250G a node) > Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > > Changes from v4->v5: > 1. Added by Acked-by & Reviewed-by tags. > 2. Swapped patch 1 & 2 in v4 version. > > Changes from v3->v4: > 1. Removed redundant duplicate header. > 2. Added Reviewed-by tags. > > Changes from v2->v3: > 1. Added Acked-by/Reviewed-by tags. > 2. Replaced asm/acpi.h with linux/acpi.h > 3. Defined arch_acpi_numa_init as static. > > Changes from v1->v2: > 1. Replaced ARM64 specific compile time protection with ACPI specific ones. > 2. Dropped common pcibus_to_node changes. Added required changes in RISC-V. > 3. Fixed few typos. > > Atish Patra (4): > arm64, numa: Change the numa init functions name to be generic > numa: Move numa implementation to common code > riscv: Separate memory init from paging init > riscv: Add numa support for riscv64 platform > > Greentime Hu (1): > riscv: Add support pte_protnone and pmd_protnone if > CONFIG_NUMA_BALANCING > > arch/arm64/Kconfig | 1 + > arch/arm64/include/asm/numa.h | 48 +---------------- > arch/arm64/kernel/acpi_numa.c | 12 ----- > arch/arm64/mm/Makefile | 1 - > arch/arm64/mm/init.c | 4 +- > arch/riscv/Kconfig | 31 ++++++++++- > arch/riscv/include/asm/mmzone.h | 13 +++++ > arch/riscv/include/asm/numa.h | 8 +++ > arch/riscv/include/asm/pci.h | 14 +++++ > arch/riscv/include/asm/pgtable.h | 21 ++++++++ > arch/riscv/kernel/setup.c | 11 +++- > arch/riscv/kernel/smpboot.c | 12 ++++- > arch/riscv/mm/init.c | 10 +++- > drivers/base/Kconfig | 6 +++ > drivers/base/Makefile | 1 + > .../mm/numa.c => drivers/base/arch_numa.c | 27 ++++++++-- > include/asm-generic/numa.h | 52 +++++++++++++++++++ > 17 files changed, 200 insertions(+), 72 deletions(-) > create mode 100644 arch/riscv/include/asm/mmzone.h > create mode 100644 arch/riscv/include/asm/numa.h > rename arch/arm64/mm/numa.c => drivers/base/arch_numa.c (96%) > create mode 100644 include/asm-generic/numa.h > > -- > 2.25.1 > > > _______________________________________________ > linux-riscv mailing list > linux-riscv@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-riscv Hey Palmer, I did not see this series in for-next. Let me know if you need anything else to be done for this series.
On Sun, 13 Dec 2020 17:02:19 PST (-0800), atishp@atishpatra.org wrote: > On Wed, Nov 18, 2020 at 4:39 PM Atish Patra <atish.patra@wdc.com> wrote: >> >> This series attempts to move the ARM64 numa implementation to common >> code so that RISC-V can leverage that as well instead of reimplementing >> it again. >> >> RISC-V specific bits are based on initial work done by Greentime Hu [1] but >> modified to reuse the common implementation to avoid duplication. >> >> [1] https://lkml.org/lkml/2020/1/10/233 >> >> This series has been tested on qemu with numa enabled for both RISC-V & ARM64. >> It would be great if somebody can test it on numa capable ARM64 hardware platforms. >> This patch series doesn't modify the maintainers list for the common code (arch_numa) >> as I am not sure if somebody from ARM64 community or Greg should take up the >> maintainership. Ganapatrao was the original author of the arm64 version. >> I would be happy to update that in the next revision once it is decided. >> >> # numactl --hardware >> available: 2 nodes (0-1) >> node 0 cpus: 0 1 2 3 >> node 0 size: 486 MB >> node 0 free: 470 MB >> node 1 cpus: 4 5 6 7 >> node 1 size: 424 MB >> node 1 free: 408 MB >> node distances: >> node 0 1 >> 0: 10 20 >> 1: 20 10 >> # numactl -show >> policy: default >> preferred node: current >> physcpubind: 0 1 2 3 4 5 6 7 >> cpubind: 0 1 >> nodebind: 0 1 >> membind: 0 1 >> >> The patches are also available at >> https://github.com/atishp04/linux/tree/5.11_numa_unified_v5 >> >> For RISC-V, the following qemu series is a pre-requisite(already available in upstream) >> https://patchwork.kernel.org/project/qemu-devel/list/?series=303313 >> >> Testing: >> RISC-V: >> Tested in Qemu and 2 socket OmniXtend FPGA. >> >> ARM64: >> 2 socket kunpeng920 (4 nodes around 250G a node) >> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> >> >> Changes from v4->v5: >> 1. Added by Acked-by & Reviewed-by tags. >> 2. Swapped patch 1 & 2 in v4 version. >> >> Changes from v3->v4: >> 1. Removed redundant duplicate header. >> 2. Added Reviewed-by tags. >> >> Changes from v2->v3: >> 1. Added Acked-by/Reviewed-by tags. >> 2. Replaced asm/acpi.h with linux/acpi.h >> 3. Defined arch_acpi_numa_init as static. >> >> Changes from v1->v2: >> 1. Replaced ARM64 specific compile time protection with ACPI specific ones. >> 2. Dropped common pcibus_to_node changes. Added required changes in RISC-V. >> 3. Fixed few typos. >> >> Atish Patra (4): >> arm64, numa: Change the numa init functions name to be generic >> numa: Move numa implementation to common code >> riscv: Separate memory init from paging init >> riscv: Add numa support for riscv64 platform >> >> Greentime Hu (1): >> riscv: Add support pte_protnone and pmd_protnone if >> CONFIG_NUMA_BALANCING >> >> arch/arm64/Kconfig | 1 + >> arch/arm64/include/asm/numa.h | 48 +---------------- >> arch/arm64/kernel/acpi_numa.c | 12 ----- >> arch/arm64/mm/Makefile | 1 - >> arch/arm64/mm/init.c | 4 +- >> arch/riscv/Kconfig | 31 ++++++++++- >> arch/riscv/include/asm/mmzone.h | 13 +++++ >> arch/riscv/include/asm/numa.h | 8 +++ >> arch/riscv/include/asm/pci.h | 14 +++++ >> arch/riscv/include/asm/pgtable.h | 21 ++++++++ >> arch/riscv/kernel/setup.c | 11 +++- >> arch/riscv/kernel/smpboot.c | 12 ++++- >> arch/riscv/mm/init.c | 10 +++- >> drivers/base/Kconfig | 6 +++ >> drivers/base/Makefile | 1 + >> .../mm/numa.c => drivers/base/arch_numa.c | 27 ++++++++-- >> include/asm-generic/numa.h | 52 +++++++++++++++++++ >> 17 files changed, 200 insertions(+), 72 deletions(-) >> create mode 100644 arch/riscv/include/asm/mmzone.h >> create mode 100644 arch/riscv/include/asm/numa.h >> rename arch/arm64/mm/numa.c => drivers/base/arch_numa.c (96%) >> create mode 100644 include/asm-generic/numa.h >> >> -- >> 2.25.1 >> >> >> _______________________________________________ >> linux-riscv mailing list >> linux-riscv@lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/linux-riscv > > Hey Palmer, > I did not see this series in for-next. Let me know if you need > anything else to be done for this series. Sorry about that. It's on for-next, with Randy's comment addressed. There was one merge conflict: we don't have resource_init() in for-next yet (which I think means I missed something else). IDK if that's necessary for the NUMA stuff, I just dropped it. I haven't tested this yet.
On Sat, Jan 9, 2021 at 12:51 PM Palmer Dabbelt <palmer@dabbelt.com> wrote: > > On Sun, 13 Dec 2020 17:02:19 PST (-0800), atishp@atishpatra.org wrote: > > On Wed, Nov 18, 2020 at 4:39 PM Atish Patra <atish.patra@wdc.com> wrote: > >> > >> This series attempts to move the ARM64 numa implementation to common > >> code so that RISC-V can leverage that as well instead of reimplementing > >> it again. > >> > >> RISC-V specific bits are based on initial work done by Greentime Hu [1] but > >> modified to reuse the common implementation to avoid duplication. > >> > >> [1] https://lkml.org/lkml/2020/1/10/233 > >> > >> This series has been tested on qemu with numa enabled for both RISC-V & ARM64. > >> It would be great if somebody can test it on numa capable ARM64 hardware platforms. > >> This patch series doesn't modify the maintainers list for the common code (arch_numa) > >> as I am not sure if somebody from ARM64 community or Greg should take up the > >> maintainership. Ganapatrao was the original author of the arm64 version. > >> I would be happy to update that in the next revision once it is decided. > >> > >> # numactl --hardware > >> available: 2 nodes (0-1) > >> node 0 cpus: 0 1 2 3 > >> node 0 size: 486 MB > >> node 0 free: 470 MB > >> node 1 cpus: 4 5 6 7 > >> node 1 size: 424 MB > >> node 1 free: 408 MB > >> node distances: > >> node 0 1 > >> 0: 10 20 > >> 1: 20 10 > >> # numactl -show > >> policy: default > >> preferred node: current > >> physcpubind: 0 1 2 3 4 5 6 7 > >> cpubind: 0 1 > >> nodebind: 0 1 > >> membind: 0 1 > >> > >> The patches are also available at > >> https://github.com/atishp04/linux/tree/5.11_numa_unified_v5 > >> > >> For RISC-V, the following qemu series is a pre-requisite(already available in upstream) > >> https://patchwork.kernel.org/project/qemu-devel/list/?series=303313 > >> > >> Testing: > >> RISC-V: > >> Tested in Qemu and 2 socket OmniXtend FPGA. > >> > >> ARM64: > >> 2 socket kunpeng920 (4 nodes around 250G a node) > >> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > >> > >> Changes from v4->v5: > >> 1. Added by Acked-by & Reviewed-by tags. > >> 2. Swapped patch 1 & 2 in v4 version. > >> > >> Changes from v3->v4: > >> 1. Removed redundant duplicate header. > >> 2. Added Reviewed-by tags. > >> > >> Changes from v2->v3: > >> 1. Added Acked-by/Reviewed-by tags. > >> 2. Replaced asm/acpi.h with linux/acpi.h > >> 3. Defined arch_acpi_numa_init as static. > >> > >> Changes from v1->v2: > >> 1. Replaced ARM64 specific compile time protection with ACPI specific ones. > >> 2. Dropped common pcibus_to_node changes. Added required changes in RISC-V. > >> 3. Fixed few typos. > >> > >> Atish Patra (4): > >> arm64, numa: Change the numa init functions name to be generic > >> numa: Move numa implementation to common code > >> riscv: Separate memory init from paging init > >> riscv: Add numa support for riscv64 platform > >> > >> Greentime Hu (1): > >> riscv: Add support pte_protnone and pmd_protnone if > >> CONFIG_NUMA_BALANCING > >> > >> arch/arm64/Kconfig | 1 + > >> arch/arm64/include/asm/numa.h | 48 +---------------- > >> arch/arm64/kernel/acpi_numa.c | 12 ----- > >> arch/arm64/mm/Makefile | 1 - > >> arch/arm64/mm/init.c | 4 +- > >> arch/riscv/Kconfig | 31 ++++++++++- > >> arch/riscv/include/asm/mmzone.h | 13 +++++ > >> arch/riscv/include/asm/numa.h | 8 +++ > >> arch/riscv/include/asm/pci.h | 14 +++++ > >> arch/riscv/include/asm/pgtable.h | 21 ++++++++ > >> arch/riscv/kernel/setup.c | 11 +++- > >> arch/riscv/kernel/smpboot.c | 12 ++++- > >> arch/riscv/mm/init.c | 10 +++- > >> drivers/base/Kconfig | 6 +++ > >> drivers/base/Makefile | 1 + > >> .../mm/numa.c => drivers/base/arch_numa.c | 27 ++++++++-- > >> include/asm-generic/numa.h | 52 +++++++++++++++++++ > >> 17 files changed, 200 insertions(+), 72 deletions(-) > >> create mode 100644 arch/riscv/include/asm/mmzone.h > >> create mode 100644 arch/riscv/include/asm/numa.h > >> rename arch/arm64/mm/numa.c => drivers/base/arch_numa.c (96%) > >> create mode 100644 include/asm-generic/numa.h > >> > >> -- > >> 2.25.1 > >> > >> > >> _______________________________________________ > >> linux-riscv mailing list > >> linux-riscv@lists.infradead.org > >> http://lists.infradead.org/mailman/listinfo/linux-riscv > > > > Hey Palmer, > > I did not see this series in for-next. Let me know if you need > > anything else to be done for this series. > > Sorry about that. It's on for-next, with Randy's comment addressed. There was > one merge conflict: we don't have resource_init() in for-next yet (which I > think means I missed something else). resource_init is changed to init_resource and moved to setup.c in the following patch which was merged in 5.11 MW. 00ab027a3b82 RISC-V: Add kernel image sections to the resource tree IDK if that's necessary for the NUMA > stuff, I just dropped it. I haven't tested this yet.
On Mon, 11 Jan 2021 11:31:11 PST (-0800), atishp@atishpatra.org wrote: > On Sat, Jan 9, 2021 at 12:51 PM Palmer Dabbelt <palmer@dabbelt.com> wrote: >> >> On Sun, 13 Dec 2020 17:02:19 PST (-0800), atishp@atishpatra.org wrote: >> > On Wed, Nov 18, 2020 at 4:39 PM Atish Patra <atish.patra@wdc.com> wrote: >> >> >> >> This series attempts to move the ARM64 numa implementation to common >> >> code so that RISC-V can leverage that as well instead of reimplementing >> >> it again. >> >> >> >> RISC-V specific bits are based on initial work done by Greentime Hu [1] but >> >> modified to reuse the common implementation to avoid duplication. >> >> >> >> [1] https://lkml.org/lkml/2020/1/10/233 >> >> >> >> This series has been tested on qemu with numa enabled for both RISC-V & ARM64. >> >> It would be great if somebody can test it on numa capable ARM64 hardware platforms. >> >> This patch series doesn't modify the maintainers list for the common code (arch_numa) >> >> as I am not sure if somebody from ARM64 community or Greg should take up the >> >> maintainership. Ganapatrao was the original author of the arm64 version. >> >> I would be happy to update that in the next revision once it is decided. >> >> >> >> # numactl --hardware >> >> available: 2 nodes (0-1) >> >> node 0 cpus: 0 1 2 3 >> >> node 0 size: 486 MB >> >> node 0 free: 470 MB >> >> node 1 cpus: 4 5 6 7 >> >> node 1 size: 424 MB >> >> node 1 free: 408 MB >> >> node distances: >> >> node 0 1 >> >> 0: 10 20 >> >> 1: 20 10 >> >> # numactl -show >> >> policy: default >> >> preferred node: current >> >> physcpubind: 0 1 2 3 4 5 6 7 >> >> cpubind: 0 1 >> >> nodebind: 0 1 >> >> membind: 0 1 >> >> >> >> The patches are also available at >> >> https://github.com/atishp04/linux/tree/5.11_numa_unified_v5 >> >> >> >> For RISC-V, the following qemu series is a pre-requisite(already available in upstream) >> >> https://patchwork.kernel.org/project/qemu-devel/list/?series=303313 >> >> >> >> Testing: >> >> RISC-V: >> >> Tested in Qemu and 2 socket OmniXtend FPGA. >> >> >> >> ARM64: >> >> 2 socket kunpeng920 (4 nodes around 250G a node) >> >> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> >> >> >> >> Changes from v4->v5: >> >> 1. Added by Acked-by & Reviewed-by tags. >> >> 2. Swapped patch 1 & 2 in v4 version. >> >> >> >> Changes from v3->v4: >> >> 1. Removed redundant duplicate header. >> >> 2. Added Reviewed-by tags. >> >> >> >> Changes from v2->v3: >> >> 1. Added Acked-by/Reviewed-by tags. >> >> 2. Replaced asm/acpi.h with linux/acpi.h >> >> 3. Defined arch_acpi_numa_init as static. >> >> >> >> Changes from v1->v2: >> >> 1. Replaced ARM64 specific compile time protection with ACPI specific ones. >> >> 2. Dropped common pcibus_to_node changes. Added required changes in RISC-V. >> >> 3. Fixed few typos. >> >> >> >> Atish Patra (4): >> >> arm64, numa: Change the numa init functions name to be generic >> >> numa: Move numa implementation to common code >> >> riscv: Separate memory init from paging init >> >> riscv: Add numa support for riscv64 platform >> >> >> >> Greentime Hu (1): >> >> riscv: Add support pte_protnone and pmd_protnone if >> >> CONFIG_NUMA_BALANCING >> >> >> >> arch/arm64/Kconfig | 1 + >> >> arch/arm64/include/asm/numa.h | 48 +---------------- >> >> arch/arm64/kernel/acpi_numa.c | 12 ----- >> >> arch/arm64/mm/Makefile | 1 - >> >> arch/arm64/mm/init.c | 4 +- >> >> arch/riscv/Kconfig | 31 ++++++++++- >> >> arch/riscv/include/asm/mmzone.h | 13 +++++ >> >> arch/riscv/include/asm/numa.h | 8 +++ >> >> arch/riscv/include/asm/pci.h | 14 +++++ >> >> arch/riscv/include/asm/pgtable.h | 21 ++++++++ >> >> arch/riscv/kernel/setup.c | 11 +++- >> >> arch/riscv/kernel/smpboot.c | 12 ++++- >> >> arch/riscv/mm/init.c | 10 +++- >> >> drivers/base/Kconfig | 6 +++ >> >> drivers/base/Makefile | 1 + >> >> .../mm/numa.c => drivers/base/arch_numa.c | 27 ++++++++-- >> >> include/asm-generic/numa.h | 52 +++++++++++++++++++ >> >> 17 files changed, 200 insertions(+), 72 deletions(-) >> >> create mode 100644 arch/riscv/include/asm/mmzone.h >> >> create mode 100644 arch/riscv/include/asm/numa.h >> >> rename arch/arm64/mm/numa.c => drivers/base/arch_numa.c (96%) >> >> create mode 100644 include/asm-generic/numa.h >> >> >> >> -- >> >> 2.25.1 >> >> >> >> >> >> _______________________________________________ >> >> linux-riscv mailing list >> >> linux-riscv@lists.infradead.org >> >> http://lists.infradead.org/mailman/listinfo/linux-riscv >> > >> > Hey Palmer, >> > I did not see this series in for-next. Let me know if you need >> > anything else to be done for this series. >> >> Sorry about that. It's on for-next, with Randy's comment addressed. There was >> one merge conflict: we don't have resource_init() in for-next yet (which I >> think means I missed something else). > > resource_init is changed to init_resource and moved to setup.c in the > following patch which was merged in 5.11 MW. > 00ab027a3b82 RISC-V: Add kernel image sections to the resource tree Ah, great, for some reason I thought we hadn't merged those yet. >> IDK if that's necessary for the NUMA >> stuff, I just dropped it. I haven't tested this yet.
This series attempts to move the ARM64 numa implementation to common code so that RISC-V can leverage that as well instead of reimplementing it again. RISC-V specific bits are based on initial work done by Greentime Hu [1] but modified to reuse the common implementation to avoid duplication. [1] https://lkml.org/lkml/2020/1/10/233 This series has been tested on qemu with numa enabled for both RISC-V & ARM64. It would be great if somebody can test it on numa capable ARM64 hardware platforms. This patch series doesn't modify the maintainers list for the common code (arch_numa) as I am not sure if somebody from ARM64 community or Greg should take up the maintainership. Ganapatrao was the original author of the arm64 version. I would be happy to update that in the next revision once it is decided. # numactl --hardware available: 2 nodes (0-1) node 0 cpus: 0 1 2 3 node 0 size: 486 MB node 0 free: 470 MB node 1 cpus: 4 5 6 7 node 1 size: 424 MB node 1 free: 408 MB node distances: node 0 1 0: 10 20 1: 20 10 # numactl -show policy: default preferred node: current physcpubind: 0 1 2 3 4 5 6 7 cpubind: 0 1 nodebind: 0 1 membind: 0 1 The patches are also available at https://github.com/atishp04/linux/tree/5.11_numa_unified_v5 For RISC-V, the following qemu series is a pre-requisite(already available in upstream) https://patchwork.kernel.org/project/qemu-devel/list/?series=303313 Testing: RISC-V: Tested in Qemu and 2 socket OmniXtend FPGA. ARM64: 2 socket kunpeng920 (4 nodes around 250G a node) Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Changes from v4->v5: 1. Added by Acked-by & Reviewed-by tags. 2. Swapped patch 1 & 2 in v4 version. Changes from v3->v4: 1. Removed redundant duplicate header. 2. Added Reviewed-by tags. Changes from v2->v3: 1. Added Acked-by/Reviewed-by tags. 2. Replaced asm/acpi.h with linux/acpi.h 3. Defined arch_acpi_numa_init as static. Changes from v1->v2: 1. Replaced ARM64 specific compile time protection with ACPI specific ones. 2. Dropped common pcibus_to_node changes. Added required changes in RISC-V. 3. Fixed few typos. Atish Patra (4): arm64, numa: Change the numa init functions name to be generic numa: Move numa implementation to common code riscv: Separate memory init from paging init riscv: Add numa support for riscv64 platform Greentime Hu (1): riscv: Add support pte_protnone and pmd_protnone if CONFIG_NUMA_BALANCING arch/arm64/Kconfig | 1 + arch/arm64/include/asm/numa.h | 48 +---------------- arch/arm64/kernel/acpi_numa.c | 12 ----- arch/arm64/mm/Makefile | 1 - arch/arm64/mm/init.c | 4 +- arch/riscv/Kconfig | 31 ++++++++++- arch/riscv/include/asm/mmzone.h | 13 +++++ arch/riscv/include/asm/numa.h | 8 +++ arch/riscv/include/asm/pci.h | 14 +++++ arch/riscv/include/asm/pgtable.h | 21 ++++++++ arch/riscv/kernel/setup.c | 11 +++- arch/riscv/kernel/smpboot.c | 12 ++++- arch/riscv/mm/init.c | 10 +++- drivers/base/Kconfig | 6 +++ drivers/base/Makefile | 1 + .../mm/numa.c => drivers/base/arch_numa.c | 27 ++++++++-- include/asm-generic/numa.h | 52 +++++++++++++++++++ 17 files changed, 200 insertions(+), 72 deletions(-) create mode 100644 arch/riscv/include/asm/mmzone.h create mode 100644 arch/riscv/include/asm/numa.h rename arch/arm64/mm/numa.c => drivers/base/arch_numa.c (96%) create mode 100644 include/asm-generic/numa.h -- 2.25.1