linux-kernel - Re: [PATCH] mm: add per-order mTHP swpin counters

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Message-ID: <CAGsJ_4yv0CqAyiA1WaPdNm8HSUL5pda9frgT_1H31+FZt1fGjg@mail.gmail.com>
Date: Wed, 30 Oct 2024 17:33:46 +1300
From: Barry Song <21cnbao@...il.com>
To: "Huang, Ying" <ying.huang@...el.com>
Cc: akpm@...ux-foundation.org, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org, Barry Song <v-songbaohua@...o.com>, 
	David Hildenbrand <david@...hat.com>, Baolin Wang <baolin.wang@...ux.alibaba.com>, 
	Chris Li <chrisl@...nel.org>, Yosry Ahmed <yosryahmed@...gle.com>, 
	Kairui Song <kasong@...cent.com>, Ryan Roberts <ryan.roberts@....com>, 
	Kanchana P Sridhar <kanchana.p.sridhar@...el.com>, Usama Arif <usamaarif642@...il.com>
Subject: Re: [PATCH] mm: add per-order mTHP swpin counters

On Wed, Oct 30, 2024 at 4:45 PM Huang, Ying <ying.huang@...el.com> wrote:
>
> Barry Song <21cnbao@...il.com> writes:
>
> > From: Barry Song <v-songbaohua@...o.com>
> >
> > This helps profile the sizes of folios being swapped in. Currently,
> > only mTHP swap-out is being counted.
>
> Better to describe the user space interface in patch description?
>

Do you mean something as below?

The new interface can be found at:

/sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats
         swapin

> [snip]
>
> --
> Best Regards,
> Huang, Ying