Re: [PATCH v5 5/5] mm: page_alloc: reduce unnecessary binary search in early_pfn_valid()

[Jia He]

On 4/2/2018 3:00 PM, Ard Biesheuvel Wrote:
How much does it improve the performance? And in which cases?

I guess it improves boot time on systems with physical address spaces
that are sparsely populated with DRAM, but you really have to quantify
this if you want other people to care.
Yes, I write the performance in patch 0/5. I will write it in the patch 
description later.

--
Cheers,
Jia