lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 9 Aug 2022 17:35:44 -0600 From: Yu Zhao <yuzhao@...gle.com> To: "Alex Zhu (Kernel)" <alexlzhu@...com> Cc: Yang Shi <shy828301@...il.com>, Rik van Riel <riel@...com>, Kernel Team <Kernel-team@...com>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "willy@...radead.org" <willy@...radead.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>, Ning Zhang <ningzhang@...ux.alibaba.com> Subject: Re: [PATCH v3] mm: add thp_utilization metrics to /proc/thp_utilization On Tue, Aug 9, 2022 at 11:16 AM Alex Zhu (Kernel) <alexlzhu@...com> wrote: > > > > 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. FYI. This series does it: https://lore.kernel.org/r/20210731063938.1391602-1-yuzhao@google.com/ And this one: https://lore.kernel.org/r/1635422215-99394-1-git-send-email-ningzhang@linux.alibaba.com/
Powered by blists - more mailing lists