On 04/12/20 at 10:48pm, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
>
> The free_area_init_node() is only used by x86 to initialize a memory-less
> nodes.
> Make its name reflect this and drop all the function parameters except node
> ID as they are anyway zero.
>
> Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
> ---
> arch/x86/mm/numa.c | 5 +----
> include/linux/mm.h | 9 +++------
> mm/page_alloc.c | 7 ++-----
> 3 files changed, 6 insertions(+), 15 deletions(-)
>
> diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
> index fe024b2ac796..8ee952038c80 100644
> --- a/arch/x86/mm/numa.c
> +++ b/arch/x86/mm/numa.c
> @@ -737,12 +737,9 @@ void __init x86_numa_init(void)
>
> static void __init init_memory_less_node(int nid)
> {
> - unsigned long zones_size[MAX_NR_ZONES] = {0};
> - unsigned long zholes_size[MAX_NR_ZONES] = {0};
> -
> /* Allocate and initialize node data. Memory-less node is now online.*/
> alloc_node_data(nid);
> - free_area_init_node(nid, zones_size, 0, zholes_size);
> + free_area_init_memoryless_node(nid);
>
> /*
> * All zonelists will be built later in start_kernel() after per cpu
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 1c2ecb42e043..27660f6cf26e 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -2272,8 +2272,7 @@ static inline spinlock_t *pud_lock(struct mm_struct *mm, pud_t *pud)
> }
>
> extern void __init pagecache_init(void);
> -extern void __init free_area_init_node(int nid, unsigned long * zones_size,
> - unsigned long zone_start_pfn, unsigned long *zholes_size);
> +extern void __init free_area_init_memoryless_node(int nid);
> extern void free_initmem(void);
>
> /*
> @@ -2345,10 +2344,8 @@ static inline unsigned long get_num_physpages(void)
>
> /*
> * Using memblock node mappings, an architecture may initialise its
> - * zones, allocate the backing mem_map and account for memory holes in a more
> - * architecture independent manner. This is a substitute for creating the
> - * zone_sizes[] and zholes_size[] arrays and passing them to
> - * free_area_init_node()
> + * zones, allocate the backing mem_map and account for memory holes in an
> + * architecture independent manner.
> *
> * An architecture is expected to register range of page frames backed by
> * physical memory with memblock_add[_node]() before calling
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 376434c7a78b..e46232ec4849 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -6979,12 +6979,9 @@ static void __init __free_area_init_node(int nid, unsigned long *zones_size,
> free_area_init_core(pgdat);
> }
>
> -void __init free_area_init_node(int nid, unsigned long *zones_size,
> - unsigned long node_start_pfn,
> - unsigned long *zholes_size)
> +void __init free_area_init_memoryless_node(int nid)
> {
> - __free_area_init_node(nid, zones_size, node_start_pfn, zholes_size,
> - true);
> + __free_area_init_node(nid, NULL, 0, NULL, false);
Can we move free_area_init_memoryless_node() definition into
arch/x86/mm/numa.c since there's only one caller there?
And I am also wondering if adding a wrapper
free_area_init_memoryless_node() is necessary if it's only called the
function free_area_init_node().
> }
>
> #if !defined(CONFIG_FLAT_NODE_MEM_MAP)
> --
> 2.25.1
>
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