Hi Arnd,
I like this cleanup, but arch/tile (which is afaik Orphaned but still in the gate) has:
HAVE_ARCH_ALLOC_REMAP set to yes:
arch/tile/Kconfig
config HAVE_ARCH_ALLOC_REMAP
def_bool y
Define in arch/tile/kernel/setup.c:
void *__init alloc_remap(int nid, unsigned long size)
{
int pages = node_end_pfn[nid] - node_start_pfn[nid];
void *map = pfn_to_kaddr(node_memmap_pfn[nid]);
BUG_ON(size != pages * sizeof(struct page));
memset(map, 0, size);
return map;
}
Thank you,
Pavel
On 03/14/2018 10:39 AM, Arnd Bergmann wrote:
> Tile was the only remaining architecture to implement alloc_remap(),
> and since that is being removed, there is no point in keeping this
> function.
>
> Removing all callers simplifies the mem_map handling.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> include/linux/bootmem.h | 9 ---------
> mm/page_alloc.c | 5 +----
> mm/sparse.c | 15 ---------------
> 3 files changed, 1 insertion(+), 28 deletions(-)
>
> diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
> index a53063e9d7d8..7942a96b1a9d 100644
> --- a/include/linux/bootmem.h
> +++ b/include/linux/bootmem.h
> @@ -364,15 +364,6 @@ static inline void __init memblock_free_late(
> }
> #endif /* defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) */
>
> -#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
> -extern void *alloc_remap(int nid, unsigned long size);
> -#else
> -static inline void *alloc_remap(int nid, unsigned long size)
> -{
> - return NULL;
> -}
> -#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */
> -
> extern void *alloc_large_system_hash(const char *tablename,
> unsigned long bucketsize,
> unsigned long numentries,
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index cb416723538f..484e21062228 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -6199,10 +6199,7 @@ static void __ref alloc_node_mem_map(struct pglist_data *pgdat)
> end = pgdat_end_pfn(pgdat);
> end = ALIGN(end, MAX_ORDER_NR_PAGES);
> size = (end - start) * sizeof(struct page);
> - map = alloc_remap(pgdat->node_id, size);
> - if (!map)
> - map = memblock_virt_alloc_node_nopanic(size,
> - pgdat->node_id);
> + map = memblock_virt_alloc_node_nopanic(size, pgdat->node_id);
> pgdat->node_mem_map = map + offset;
> }
> pr_debug("%s: node %d, pgdat %08lx, node_mem_map %08lx\n",
> diff --git a/mm/sparse.c b/mm/sparse.c
> index 7af5e7a92528..65bb52599f90 100644
> --- a/mm/sparse.c
> +++ b/mm/sparse.c
> @@ -427,10 +427,6 @@ struct page __init *sparse_mem_map_populate(unsigned long pnum, int nid,
> struct page *map;
> unsigned long size;
>
> - map = alloc_remap(nid, sizeof(struct page) * PAGES_PER_SECTION);
> - if (map)
> - return map;
> -
> size = PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION);
> map = memblock_virt_alloc_try_nid(size,
> PAGE_SIZE, __pa(MAX_DMA_ADDRESS),
> @@ -446,17 +442,6 @@ void __init sparse_mem_maps_populate_node(struct page **map_map,
> unsigned long pnum;
> unsigned long size = sizeof(struct page) * PAGES_PER_SECTION;
>
> - map = alloc_remap(nodeid, size * map_count);
> - if (map) {
> - for (pnum = pnum_begin; pnum < pnum_end; pnum++) {
> - if (!present_section_nr(pnum))
> - continue;
> - map_map[pnum] = map;
> - map += size;
> - }
> - return;
> - }
> -
> size = PAGE_ALIGN(size);
> map = memblock_virt_alloc_try_nid_raw(size * map_count,
> PAGE_SIZE, __pa(MAX_DMA_ADDRESS),
>
