Hi, Andrew
I saw you merged one related patch recently, not sure you would take these two?
On Mon, Mar 26, 2018 at 04:19:55PM +0800, Wei Yang wrote:
>In 'commit c4e1be9ec113 ("mm, sparsemem: break out of loops early")',
>__highest_present_section_nr is introduced to reduce the loop counts for
>present section. This is also helpful for usemap and memmap allocation.
>
>This patch uses __highest_present_section_nr + 1 to optimize the loop.
>
>Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
>---
> mm/sparse.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/mm/sparse.c b/mm/sparse.c
>index 7af5e7a92528..505050346249 100644
>--- a/mm/sparse.c
>+++ b/mm/sparse.c
>@@ -561,7 +561,7 @@ static void __init alloc_usemap_and_memmap(void (*alloc_func)
> map_count = 1;
> }
> /* ok, last chunk */
>- alloc_func(data, pnum_begin, NR_MEM_SECTIONS,
>+ alloc_func(data, pnum_begin, __highest_present_section_nr+1,
> map_count, nodeid_begin);
> }
>
>--
>2.15.1
--
Wei Yang
Help you, Help me
