linux-kernel - Re: [PATCH v5 2/5] mm: rename memmap_init() and memmap_init

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Date:   Fri, 22 Jan 2021 16:38:45 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Baoquan He <bhe@...hat.com>, linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, akpm@...ux-foundation.org, rppt@...nel.org,
        lkp@...el.com
Subject: Re: [PATCH v5 2/5] mm: rename memmap_init() and memmap_init_zone()

On 22.01.21 14:59, Baoquan He wrote:
> The current memmap_init_zone() only handles memory region inside one zone,
> actually memmap_init() does the memmap init of one zone. So rename both of
> them accordingly.
> 
> Signed-off-by: Baoquan He <bhe@...hat.com>
> ---
>  arch/ia64/mm/init.c | 6 +++---
>  include/linux/mm.h  | 4 ++--
>  mm/memory_hotplug.c | 2 +-
>  mm/page_alloc.c     | 8 ++++----
>  4 files changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
> index e76386a3479e..c8e68e92beb3 100644
> --- a/arch/ia64/mm/init.c
> +++ b/arch/ia64/mm/init.c
> @@ -535,18 +535,18 @@ virtual_memmap_init(u64 start, u64 end, void *arg)
>  		    / sizeof(struct page));
>  
>  	if (map_start < map_end)
> -		memmap_init_zone((unsigned long)(map_end - map_start),
> +		memmap_init_range((unsigned long)(map_end - map_start),
>  				 args->nid, args->zone, page_to_pfn(map_start), page_to_pfn(map_end),
>  				 MEMINIT_EARLY, NULL, MIGRATE_MOVABLE);
>  	return 0;
>  }
>  
>  void __meminit
> -memmap_init (unsigned long size, int nid, unsigned long zone,
> +memmap_init_zone(unsigned long size, int nid, unsigned long zone,
>  	     unsigned long start_pfn)
>  {
>  	if (!vmem_map) {
> -		memmap_init_zone(size, nid, zone, start_pfn, start_pfn + size,
> +		memmap_init_range(size, nid, zone, start_pfn, start_pfn + size,
>  				 MEMINIT_EARLY, NULL, MIGRATE_MOVABLE);
>  	} else {
>  		struct page *start;
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 3d82b4f7cabc..2395dc212221 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -2398,10 +2398,10 @@ extern int __meminit early_pfn_to_nid(unsigned long pfn);
>  #endif
>  
>  extern void set_dma_reserve(unsigned long new_dma_reserve);
> -extern void memmap_init_zone(unsigned long, int, unsigned long,
> +extern void memmap_init_range(unsigned long, int, unsigned long,
>  		unsigned long, unsigned long, enum meminit_context,
>  		struct vmem_altmap *, int migratetype);
> -extern void memmap_init(unsigned long size, int nid,
> +extern void memmap_init_zone(unsigned long size, int nid,
>  		unsigned long zone, unsigned long range_start_pfn);
>  extern void setup_per_zone_wmarks(void);
>  extern int __meminit init_per_zone_wmark_min(void);
> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
> index f9d57b9be8c7..ddcb1cd24c60 100644
> --- a/mm/memory_hotplug.c
> +++ b/mm/memory_hotplug.c
> @@ -713,7 +713,7 @@ void __ref move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn,
>  	 * expects the zone spans the pfn range. All the pages in the range
>  	 * are reserved so nobody should be touching them so we should be safe
>  	 */
> -	memmap_init_zone(nr_pages, nid, zone_idx(zone), start_pfn, 0,
> +	memmap_init_range(nr_pages, nid, zone_idx(zone), start_pfn, 0,
>  			 MEMINIT_HOTPLUG, altmap, migratetype);
>  
>  	set_zone_contiguous(zone);
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 44ec5594798d..42a1d2d2a87d 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -6117,7 +6117,7 @@ overlap_memmap_init(unsigned long zone, unsigned long *pfn)
>   * (usually MIGRATE_MOVABLE). Besides setting the migratetype, no related
>   * zone stats (e.g., nr_isolate_pageblock) are touched.
>   */
> -void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
> +void __meminit memmap_init_range(unsigned long size, int nid, unsigned long zone,
>  		unsigned long start_pfn, unsigned long zone_end_pfn,
>  		enum meminit_context context,
>  		struct vmem_altmap *altmap, int migratetype)
> @@ -6254,7 +6254,7 @@ static void __meminit zone_init_free_lists(struct zone *zone)
>  	}
>  }
>  
> -void __meminit __weak memmap_init(unsigned long size, int nid,
> +void __meminit __weak memmap_init_zone(unsigned long size, int nid,
>  				  unsigned long zone,
>  				  unsigned long range_start_pfn)
>  {
> @@ -6268,7 +6268,7 @@ void __meminit __weak memmap_init(unsigned long size, int nid,
>  
>  		if (end_pfn > start_pfn) {
>  			size = end_pfn - start_pfn;
> -			memmap_init_zone(size, nid, zone, start_pfn, range_end_pfn,
> +			memmap_init_range(size, nid, zone, start_pfn, range_end_pfn,
>  					 MEMINIT_EARLY, NULL, MIGRATE_MOVABLE);
>  		}
>  	}
> @@ -6978,7 +6978,7 @@ static void __init free_area_init_core(struct pglist_data *pgdat)
>  		set_pageblock_order();
>  		setup_usemap(pgdat, zone, zone_start_pfn, size);
>  		init_currently_empty_zone(zone, zone_start_pfn, size);
> -		memmap_init(size, nid, j, zone_start_pfn);
> +		memmap_init_zone(size, nid, j, zone_start_pfn);
>  	}
>  }
>  
> 

Reviewed-by: David Hildenbrand <david@...hat.com>

-- 
Thanks,

David / dhildenb