linux-kernel - Re: [PATCH RFC 1/4] mm: percpu: Generalize percpu related config

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Date:   Fri, 3 Dec 2021 18:54:38 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:     dennis@...nel.org, akpm@...ux-foundation.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org, tj@...nel.org,
        gregkh@...uxfoundation.org, cl@...ux.com, will@...nel.org,
        tsbogend@...ha.franken.de, mpe@...erman.id.au,
        benh@...nel.crashing.org, paulus@...ba.org,
        paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, davem@...emloft.net, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        hpa@...or.com, linux-arm-kernel@...ts.infradead.org,
        linux-ia64@...r.kernel.org, linux-mips@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
        sparclinux@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH RFC 1/4] mm: percpu: Generalize percpu related config

On Sun, Nov 21, 2021 at 05:35:54PM +0800, Kefeng Wang wrote:
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index c4207cf9bb17..4ff73299f8a9 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -1135,6 +1135,10 @@ config NUMA
>  	select GENERIC_ARCH_NUMA
>  	select ACPI_NUMA if ACPI
>  	select OF_NUMA
> +	select HAVE_SETUP_PER_CPU_AREA
> +	select NEED_PER_CPU_EMBED_FIRST_CHUNK
> +	select NEED_PER_CPU_PAGE_FIRST_CHUNK
> +	select USE_PERCPU_NUMA_NODE_ID
>  	help
>  	  Enable NUMA (Non-Uniform Memory Access) support.
>  
> @@ -1151,22 +1155,6 @@ config NODES_SHIFT
>  	  Specify the maximum number of NUMA Nodes available on the target
>  	  system.  Increases memory reserved to accommodate various tables.
>  
> -config USE_PERCPU_NUMA_NODE_ID
> -	def_bool y
> -	depends on NUMA
> -
> -config HAVE_SETUP_PER_CPU_AREA
> -	def_bool y
> -	depends on NUMA
> -
> -config NEED_PER_CPU_EMBED_FIRST_CHUNK
> -	def_bool y
> -	depends on NUMA
> -
> -config NEED_PER_CPU_PAGE_FIRST_CHUNK
> -	def_bool y
> -	depends on NUMA
> -
>  source "kernel/Kconfig.hz"
>  
>  config ARCH_SPARSEMEM_ENABLE

For arm64:

Acked-by: Catalin Marinas <catalin.marinas@....com>