linux-kernel - Re: [PATCH v2 1/2] mm: memcg: refactor page state unit helpers

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 3 Oct 2023 20:11:03 +0200
From:   Michal Koutný <mkoutny@...e.com>
To:     Yosry Ahmed <yosryahmed@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Muchun Song <muchun.song@...ux.dev>, linux-mm@...ck.org,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] mm: memcg: refactor page state unit helpers

On Fri, Sep 22, 2023 at 05:57:39PM +0000, Yosry Ahmed <yosryahmed@...gle.com> wrote:
> memcg_page_state_unit() is currently used to identify the unit of a
> memcg state item so that all stats in memory.stat are in bytes. However,
> it lies about the units of WORKINGSET_* stats. These stats actually
> represent pages, but we present them to userspace as a scalar number of
> events. In retrospect, maybe those stats should have been memcg "events"
> rather than memcg "state".

Why isn't it possible to move WORKINGSET_* stats under the events now?
(Instead of using internal and external units.)

Thanks,
Michal

Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)