# Re: \[PATCH v3 8/9\] mm: replace CONFIG\_NEED\_MULTIPLE\_NODES with CONFIG\_NUMA

- From: Andrew Morton \<akpm@linux-foundation.org\>
- Date: 2021-06-09 00:26:06 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2021/06/1407746
- Thread: https://ratatoskr.run/kexec/2021/06/1406169/t.md

```text
On Tue,  8 Jun 2021 12:13:15 +0300 Mike Rapoport [ref] wrote:

> From: Mike Rapoport <redacted>
> 
> After removal of DISCINTIGMEM the NEED_MULTIPLE_NODES and NUMA
> configuration options are equivalent.
> 
> Drop CONFIG_NEED_MULTIPLE_NODES and use CONFIG_NUMA instead.
> 
> Done with
> 
> 	$ sed -i 's/CONFIG_NEED_MULTIPLE_NODES/CONFIG_NUMA/' \
> 		$(git grep -wl CONFIG_NEED_MULTIPLE_NODES)
> 	$ sed -i 's/NEED_MULTIPLE_NODES/NUMA/' \
> 		$(git grep -wl NEED_MULTIPLE_NODES)
> 
> with manual tweaks afterwards.
> 
> ...
>
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -987,7 +987,7 @@ extern int movable_zone;
>  #ifdef CONFIG_HIGHMEM
>  static inline int zone_movable_is_highmem(void)
>  {
> -#ifdef CONFIG_NEED_MULTIPLE_NODES
> +#ifdef CONFIG_NUMA
>  	return movable_zone == ZONE_HIGHMEM;
>  #else
>  	return (ZONE_MOVABLE - 1) == ZONE_HIGHMEM;

I dropped this hunk - your "mm/mmzone.h: simplify is_highmem_idx()"
removed zone_movable_is_highmem().  

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