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* [PATCH v4 0/5] Unify NUMA implementation between ARM64 & RISC-V
@ 2020-10-06  0:17 Atish Patra
  2020-10-06  0:17 ` [PATCH v4 1/5] numa: Move numa implementation to common code Atish Patra
                   ` (6 more replies)
  0 siblings, 7 replies; 20+ messages in thread
From: Atish Patra @ 2020-10-06  0:17 UTC (permalink / raw)
  To: linux-kernel
  Cc: Atish Patra, Jonathan Cameron, Albert Ou, Andrew Morton,
	Anshuman Khandual, Anup Patel, Arnd Bergmann, Catalin Marinas,
	David Hildenbrand, Greentime Hu, Greg Kroah-Hartman, Jia He,
	Kefeng Wang, linux-arch, linux-riscv, Mike Rapoport,
	Nicolas Saenz Julienne, Palmer Dabbelt, Paul Walmsley,
	Rafael J. Wysocki, Steven Price, Will Deacon, Zong Li,
	linux-arm-kernel

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@huawei.com>

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


^ permalink raw reply	[flat|nested] 20+ messages in thread

end of thread, other threads:[~2020-11-07  0:54 UTC | newest]

Thread overview: 20+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-10-06  0:17 [PATCH v4 0/5] Unify NUMA implementation between ARM64 & RISC-V Atish Patra
2020-10-06  0:17 ` [PATCH v4 1/5] numa: Move numa implementation to common code Atish Patra
2020-10-06  0:17 ` [PATCH v4 2/5] arm64, numa: Change the numa init functions name to be generic Atish Patra
2020-11-06 17:14   ` Catalin Marinas
2020-11-06 17:33     ` Atish Patra
2020-11-06 19:08       ` Catalin Marinas
2020-11-07  0:53         ` Atish Patra
2020-10-06  0:17 ` [PATCH v4 3/5] riscv: Separate memory init from paging init Atish Patra
2020-10-22  5:37   ` Anup Patel
2020-11-05 17:34   ` Palmer Dabbelt
2020-10-06  0:17 ` [PATCH v4 4/5] riscv: Add support pte_protnone and pmd_protnone if CONFIG_NUMA_BALANCING Atish Patra
2020-10-22  5:38   ` Anup Patel
2020-11-05 17:34   ` Palmer Dabbelt
2020-10-06  0:17 ` [PATCH v4 5/5] riscv: Add numa support for riscv64 platform Atish Patra
2020-10-22  5:40   ` Anup Patel
2020-11-05 17:34   ` Palmer Dabbelt
2020-10-13 20:19 ` [PATCH v4 0/5] Unify NUMA implementation between ARM64 & RISC-V Atish Patra
2020-10-19 21:29   ` Palmer Dabbelt
2020-11-05 18:07 ` Palmer Dabbelt
2020-11-06 17:18   ` Catalin Marinas

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