On Tue, 13 Oct 2020 13:19:35 PDT (-0700), atishp@xxxxxxxxxxxxxx wrote:
On Mon, Oct 5, 2020 at 5:18 PM Atish Patra <atish.patra@xxxxxxx> 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/5.10_numa_unified_v4
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@xxxxxxxxxx>
There may be some minor conflicts with Mike's cleanup series [2] depending on the
order in which these two series are being accepted. I can rebase on top his series
if required.
[2] https://lkml.org/lkml/2020/8/18/754
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):
numa: Move numa implementation to common code
arm64, numa: Change the numa init functions name to be generic
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 | 45 +----------------
arch/arm64/kernel/acpi_numa.c | 13 -----
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 | 30 ++++++++++--
include/asm-generic/numa.h | 49 +++++++++++++++++++
17 files changed, 199 insertions(+), 71 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 (95%)
create mode 100644 include/asm-generic/numa.h
--
2.25.1
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Ping ?
This has been at the top of my inbox for a week or two now, I just haven't
gotten around to taking a look yet because of all the other fires going on.
Sorry.
