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

From: Pratyush Brahma
Date: Thu Aug 18 2022 - 00:46:16 EST



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.