From: "Alex Zhu (Kernel)" <alexlzhu@fb.com>
To: Yang Shi <shy828301@gmail.com>
Cc: Rik van Riel <riel@fb.com>, Kernel Team <Kernel-team@fb.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"willy@infradead.org" <willy@infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>
Subject: Re: [PATCH v3] mm: add thp_utilization metrics to /proc/thp_utilization
Date: Tue, 9 Aug 2022 17:15:47 +0000 [thread overview]
Message-ID: <1F8B9D85-A735-4832-AD58-CA4BD474248D@fb.com> (raw)
In-Reply-To: <CAHbLzkqpn2ExBJuPD8sYJrEDCUU9=FE3GFh8kL3Bmax0KytKPw@mail.gmail.com>
> OK, it is hard to tell what it looks like now. But the THPs on the
> deferred split list may be on the "low utilization split" list too?
> IIUC the major difference is to replace zero-filled subpage to special
> zero page, so you implemented another THP split function to handle it?
>
> Anyway the code should answer the most questions.
They can indeed end up on both lists. This did have to be handled when
implementing the shrinker.
We free the zero filled subpages, while modifying the existing split_huge_page()
function. Will follow up that change in another patch.
next prev parent reply other threads:[~2022-08-09 17:16 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-05 18:40 alexlzhu
2022-08-05 18:50 ` Matthew Wilcox
2022-08-05 19:04 ` Rik van Riel
2022-08-05 19:24 ` Matthew Wilcox
2022-08-05 19:51 ` Alex Zhu (Kernel)
2022-08-08 17:55 ` Yang Shi
2022-08-08 18:35 ` Rik van Riel
2022-08-09 17:11 ` Yang Shi
2022-08-09 17:15 ` Alex Zhu (Kernel) [this message]
2022-08-09 23:35 ` Yu Zhao
2022-08-10 17:07 ` Yang Shi
2022-08-10 17:14 ` Alex Zhu (Kernel)
2022-08-10 17:54 ` Yu Zhao
2022-08-10 21:39 ` Alex Zhu (Kernel)
2022-08-10 21:56 ` Yu Zhao
2022-08-11 0:00 ` Alex Zhu (Kernel)
2022-08-11 1:15 ` Yu Zhao
2022-08-11 2:08 ` Alex Zhu (Kernel)
2022-08-11 19:20 ` Alex Zhu (Kernel)
2022-08-11 21:55 ` Yu Zhao
2022-08-11 22:12 ` Yang Shi
2022-08-11 22:59 ` Yu Zhao
2022-08-07 6:03 ` kernel test robot
2022-08-07 6:44 ` kernel test robot
2022-08-07 6:55 ` kernel test robot
2022-08-08 17:52 ` Yang Shi
2022-08-05 20:28 William Kucharski
2022-08-05 21:14 William Kucharski
2022-08-05 21:46 ` Alex Zhu (Kernel)
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