linux-kernel - Re: [RFC PATCH 1/3] cgroup: list all subsystem states in debugfs files

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Date:   Wed, 13 Sep 2023 12:33:21 +0200
From:   Dmitry Yakunin <zeil@...ius.com>
To:     "tj@...nel.org" <tj@...nel.org>
Cc:     "cgroups@...r.kernel.org" <cgroups@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        NB-Core Team <NB-CoreTeam@...ius.com>,
        "hannes@...xchg.org" <hannes@...xchg.org>,
        "mhocko@...nel.org" <mhocko@...nel.org>,
        Konstantin Khlebnikov <khlebnikov@...dex-team.ru>,
        Andrey Ryabinin <arbn@...dex-team.com>
Subject: Re: [RFC PATCH 1/3] cgroup: list all subsystem states in debugfs
 files

Thank you for pointing out to drgn scripts in kernel source tree, didn't 
know about them, I will take a look.

On 11.09.2023 20:55, tj@...nel.org wrote:
> On Mon, Sep 11, 2023 at 07:55:15AM +0000, Yakunin, Dmitry (Nebius) wrote:
>> +static void mem_cgroup_css_dump(struct cgroup_subsys_state *css,
>> +                             struct seq_file *m)
>> +{
>> +     struct mem_cgroup *memcg = mem_cgroup_from_css(css);
>> +
>> +     seq_printf(m, "mem_id=%u memory=%lu memsw=%lu kmem=%lu tcpmem=%lu shmem=%lu",
>> +                mem_cgroup_id(memcg),
>> +                page_counter_read(&memcg->memory),
>> +                page_counter_read(&memcg->memsw),
>> +                page_counter_read(&memcg->kmem),
>> +                page_counter_read(&memcg->tcpmem),
>> +                memcg_page_state(memcg, NR_SHMEM));
>> +}
> Can you please take a look at drgn (https://github.com/osandov/drgn) and see
> whether that satifies your needs? We can easily add drgn scripts under tools
> directory too (e.g. iocost already does that).
>
> Thanks.
>
> --
> tejun