From: David Rientjes <rientjes@google.com>
To: Rodrigo Freire <rfreire@redhat.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: be more informative in OOM task list
Date: Tue, 3 Jul 2018 18:34:48 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.21.1807031832540.110853@chino.kir.corp.google.com> (raw)
In-Reply-To: <7de14c6cac4a486c04149f37948e3a76028f3fa5.1530461087.git.rfreire@redhat.com>
On Sun, 1 Jul 2018, Rodrigo Freire wrote:
> The default page memory unit of OOM task dump events might not be
> intuitive for the non-initiated when debugging OOM events. Add
> a small printk prior to the task dump informing that the memory
> units are actually memory _pages_.
>
> Signed-off-by: Rodrigo Freire <rfreire@redhat.com>
> ---
> mm/oom_kill.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/mm/oom_kill.c b/mm/oom_kill.c
> index 84081e7..b4d9557 100644
> --- a/mm/oom_kill.c
> +++ b/mm/oom_kill.c
> @@ -392,6 +392,7 @@ static void dump_tasks(struct mem_cgroup *memcg, const nodemask_t *nodemask)
> struct task_struct *p;
> struct task_struct *task;
>
> + pr_info("Tasks state (memory values in pages):\n");
> pr_info("[ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name\n");
> rcu_read_lock();
> for_each_process(p) {
As the author of dump_tasks(), and having seen these values misinterpreted
on more than one occassion, I think this is a valuable addition.
Could you also expand out the "pid" field to allow for seven digits
instead of five? I think everything else is aligned.
Feel free to add
Acked-by: David Rientjes <rientjes@google.com>
to a v2.
next prev parent reply other threads:[~2018-07-04 1:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-01 16:09 [PATCH] mm: be more informative in OOM task list Rodrigo Freire
2018-07-02 9:30 ` Michal Hocko
2018-07-02 11:22 ` Rodrigo Freire
2018-07-02 11:29 ` Michal Hocko
2018-07-02 11:39 ` Rodrigo Freire
2018-07-04 1:34 ` David Rientjes [this message]
2018-07-04 14:36 ` Rafael Aquini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=alpine.DEB.2.21.1807031832540.110853@chino.kir.corp.google.com \
--to=rientjes@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=rfreire@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.