linux-kernel - Re: [PATCH] mm: introduce entrance for root_mem

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Date:   Thu, 2 Feb 2023 14:36:55 +0800
From:   Zhaoyang Huang <huangzhaoyang@...il.com>
To:     Shakeel Butt <shakeelb@...gle.com>
Cc:     "zhaoyang.huang" <zhaoyang.huang@...soc.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        ke.wang@...soc.com
Subject: Re: [PATCH] mm: introduce entrance for root_mem_cgroup's current

On Thu, Feb 2, 2023 at 2:30 PM Shakeel Butt <shakeelb@...gle.com> wrote:
>
> On Wed, Feb 1, 2023 at 8:34 PM zhaoyang.huang <zhaoyang.huang@...soc.com> wrote:
> >
> > From: Zhaoyang Huang <zhaoyang.huang@...soc.com>
> >
> > Introducing memory.root_current for the memory charges on root_mem_cgroup.
>
> Why and how are you planning to use it?
root_mem_cgroup is lack of such statistic entry for debug purpose,
which is the counterpart of memory.current within other memcgs