Re: [PATCH v3 1/2] mm: Optimize the ARCH_NEEDS_WEAK_PER_CPU logic for s390/alpha architectures

[Matthew Wilcox]

On Mon, Jun 16, 2025 at 10:29:17AM +0800, Hao Ge wrote:
> +++ b/mm/Kconfig
> @@ -929,6 +929,10 @@ config ARCH_SUPPORTS_PUD_PFNMAP
>  	def_bool y
>  	depends on ARCH_SUPPORTS_HUGE_PFNMAP && HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
>  
> +# s390 and alpha should be enabled,see comments for DECLARE_PER_CPU_SECTION

This comment is inappropriate and should be removed.

> +config ARCH_NEEDS_WEAK_PER_CPU
> +       bool
> +
>  #
>  # UP and nommu archs use km based percpu allocator
>  #
> -- 
> 2.25.1
> 
>