linux-riscv.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
* [RFT PATCH v3 0/5] Unify NUMA implementation between ARM64 & RISC-V
@ 2020-09-18 20:11 Atish Patra
  2020-09-18 20:11 ` [RFT PATCH v3 1/5] numa: Move numa implementation to common code Atish Patra
                   ` (5 more replies)
  0 siblings, 6 replies; 13+ messages in thread
From: Atish Patra @ 2020-09-18 20:11 UTC (permalink / raw)
  To: linux-kernel
  Cc: David Hildenbrand, Catalin Marinas, Jonathan Cameron,
	Atish Patra, Zong Li, linux-riscv, Will Deacon, linux-arch,
	Anup Patel, Rafael J. Wysocki, Steven Price, Greentime Hu,
	Albert Ou, Arnd Bergmann, Anshuman Khandual, Paul Walmsley,
	linux-arm-kernel, Greg Kroah-Hartman, Palmer Dabbelt,
	Mike Rapoport, Andrew Morton, Nicolas Saenz Julienne

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 

For RISC-V, the following qemu series is a pre-requisite(already available in upstream)
to test the patches in Qemu and 2 socket OmniXtend FPGA.

https://patchwork.kernel.org/project/qemu-devel/list/?series=303313

The patches are also available at

https://github.com/atishp04/linux/tree/5.10_numa_unified_v3

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 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     | 31 ++++++++++--
include/asm-generic/numa.h                    | 49 +++++++++++++++++++
17 files changed, 201 insertions(+), 70 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


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2020-10-01 22:03 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-09-18 20:11 [RFT PATCH v3 0/5] Unify NUMA implementation between ARM64 & RISC-V Atish Patra
2020-09-18 20:11 ` [RFT PATCH v3 1/5] numa: Move numa implementation to common code Atish Patra
2020-09-18 20:11 ` [RFT PATCH v3 2/5] arm64, numa: Change the numa init functions name to be generic Atish Patra
2020-09-21  9:01   ` Jonathan Cameron
2020-09-21 23:50     ` Atish Patra
2020-09-18 20:11 ` [RFT PATCH v3 3/5] riscv: Separate memory init from paging init Atish Patra
2020-09-18 20:11 ` [RFT PATCH v3 4/5] riscv: Add support pte_protnone and pmd_protnone if CONFIG_NUMA_BALANCING Atish Patra
2020-09-18 20:11 ` [RFT PATCH v3 5/5] riscv: Add numa support for riscv64 platform Atish Patra
2020-09-21 15:49 ` [RFT PATCH v3 0/5] Unify NUMA implementation between ARM64 & RISC-V Jonathan Cameron
2020-09-22  0:08   ` Atish Patra
2020-09-22 11:29     ` Jonathan Cameron
2020-09-22 21:04       ` Atish Patra
2020-10-01 22:02         ` Atish Patra

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).