Re: [PATCH v2] mm: oom_kill: add trace logs in process_mrelease() system call

[Pratyush Brahma]

On 17-08-2022 21:32, Andrew Morton wrote:
> On Tue, 16 Aug 2022 11:30:17 +0530 Pratyush Brahma <pbrahma@xxxxxxxxxxxxxxxx> wrote:
>
> > From: Charan Teja Kalla <quic_charante@xxxxxxxxxxx>
> >
> > The process_mrelease() system call[1] is used to release the memory of
> > a dying process from the context of the caller, which is similar to and
> > uses the functions of the oom reaper logic. There exists trace logs for
> > a process when reaped by the oom reaper. Just extend the same to when
> > done by the process_mrelease() system call.
> >
> > ...
> >
> > +	pr_debug("process_mrelease: reaped process %d (%s), now anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB\n",
> > +						task_pid_nr(task), task->comm,
> > +						K(get_mm_counter(mm, MM_ANONPAGES)),
> > +						K(get_mm_counter(mm, MM_FILEPAGES)),
> > +						K(get_mm_counter(mm, MM_SHMEMPAGES)));
> This addition wasn't changelogged.  It's the only pr_debug in
> oom_kill.c.  Please explain?

The equivalent pr_info() message as in oom_reap_task_mm() is made 
pr_debug() here as per review comments in patch-set v1.

>