From: Suren Baghdasaryan <surenb@google.com>
To: Zi Yan <ziy@nvidia.com>
Cc: Yueyang Pan <pyyjason@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>, Michal Hocko <mhocko@suse.com>,
Brendan Jackman <jackmanb@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Vishal Moola <vishal.moola@gmail.com>,
Shakeel Butt <shakeel.butt@linux.dev>,
Usama Arif <usamaarif642@gmail.com>,
linux-mm@kvack.org, kernel-team@meta.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/2] mm/show_mem: Add trylock while printing alloc info
Date: Wed, 3 Sep 2025 10:08:26 -0700 [thread overview]
Message-ID: <CAJuCfpEUBFk6uHieHdsXoRFV+WxEgqW7LOvz1wKfrU=uKm-Uzw@mail.gmail.com> (raw)
In-Reply-To: <087C9FD8-BEDD-4CF8-82DB-E3B909FEE321@nvidia.com>
On Wed, Sep 3, 2025 at 9:30 AM Zi Yan <ziy@nvidia.com> wrote:
>
> On 3 Sep 2025, at 7:16, Yueyang Pan wrote:
>
> > In production, show_mem() can be called concurrently from two
> > different entities, for example one from oom_kill_process()
> > another from __alloc_pages_slowpath from another kthread. This
> > patch adds a spinlock and invokes trylock before printing out the
> > kernel alloc info in show_mem(). This way two alloc info won't
> > interleave with each other, which then makes parsing easier.
> >
> > Signed-off-by: Yueyang Pan <pyyjason@gmail.com>
> > ---
> > mm/show_mem.c | 5 ++++-
> > 1 file changed, 4 insertions(+), 1 deletion(-)
> >
>
> Acked-by: Zi Yan <ziy@nvidia.com>
Acked-by: Suren Baghdasaryan <surenb@google.com>
>
> Best Regards,
> Yan, Zi
next prev parent reply other threads:[~2025-09-03 17:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-03 11:16 [PATCH v3 0/2] mm/show_mem: Bug fix for print mem " Yueyang Pan
2025-09-03 11:16 ` [PATCH v3 1/2] mm/show_mem: Dump the status of the mem alloc profiling before printing Yueyang Pan
2025-09-03 15:49 ` Usama Arif
2025-09-03 16:10 ` Vlastimil Babka
2025-09-03 16:29 ` Zi Yan
2025-09-03 17:07 ` Suren Baghdasaryan
2025-09-03 19:07 ` Vishal Moola (Oracle)
2025-09-04 23:53 ` Shakeel Butt
2025-09-03 11:16 ` [PATCH v3 2/2] mm/show_mem: Add trylock while printing alloc info Yueyang Pan
2025-09-03 15:48 ` Usama Arif
2025-09-03 16:10 ` Vlastimil Babka
2025-09-03 16:30 ` Zi Yan
2025-09-03 17:08 ` Suren Baghdasaryan [this message]
2025-09-04 23:53 ` Shakeel Butt
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='CAJuCfpEUBFk6uHieHdsXoRFV+WxEgqW7LOvz1wKfrU=uKm-Uzw@mail.gmail.com' \
--to=surenb@google.com \
--cc=akpm@linux-foundation.org \
--cc=hannes@cmpxchg.org \
--cc=jackmanb@google.com \
--cc=kernel-team@meta.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@suse.com \
--cc=pyyjason@gmail.com \
--cc=shakeel.butt@linux.dev \
--cc=usamaarif642@gmail.com \
--cc=vbabka@suse.cz \
--cc=vishal.moola@gmail.com \
--cc=ziy@nvidia.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox