linux-kernel - Re: [PATCH] docs: kernel-parameters: mark numa=off is supported by a bundle of architectures

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Date:   Sat, 29 May 2021 15:45:02 -0700 (PDT)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     song.bao.hua@...ilicon.com
CC:     corbet@....net, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        Paul Walmsley <paul.walmsley@...ive.com>,
        aou@...s.berkeley.edu, will@...nel.org, catalin.marinas@....com,
        linux-arm-kernel@...ts.infradead.org, mpe@...erman.id.au,
        benh@...nel.crashing.org, paulus@...ba.org,
        linuxppc-dev@...ts.ozlabs.org, song.bao.hua@...ilicon.com
Subject:     Re: [PATCH] docs: kernel-parameters: mark numa=off is supported by a bundle of architectures

On Sun, 23 May 2021 22:17:15 PDT (-0700), song.bao.hua@...ilicon.com wrote:
> risc-v and arm64 support numa=off by common arch_numa_init()
> in drivers/base/arch_numa.c. x86, ppc, mips, sparc support it
> by arch-level early_param.
> numa=off is widely used in linux distributions. it is better
> to document it.
>
> Signed-off-by: Barry Song <song.bao.hua@...ilicon.com>
> ---
>  Documentation/admin-guide/kernel-parameters.txt | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index cb89dbdedc46..a388fbdaa2ec 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -3513,6 +3513,9 @@
>
>  	nr_uarts=	[SERIAL] maximum number of UARTs to be registered.
>
> +	numa=off 	[KNL, ARM64, PPC, RISCV, SPARC, X86] Disable NUMA, Only
> +			set up a single NUMA node spanning all memory.
> +
>  	numa_balancing=	[KNL,ARM64,PPC,RISCV,S390,X86] Enable or disable automatic
>  			NUMA balancing.
>  			Allowed values are enable and disable

Acked-by: Palmer Dabbelt <palmerdabbelt@...gle.com>

Thanks!