From: Michal Hocko <mhocko@kernel.org>
To: David Rientjes <rientjes@google.com>
Cc: "Andrew Morton" <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, "David (ChunMing) Zhou" <David1.Zhou@amd.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Alex Deucher" <alexander.deucher@amd.com>,
"David Airlie" <airlied@linux.ie>,
"Jani Nikula" <jani.nikula@linux.intel.com>,
"Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>,
"Rodrigo Vivi" <rodrigo.vivi@intel.com>,
"Doug Ledford" <dledford@redhat.com>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Mike Marciniszyn" <mike.marciniszyn@intel.com>,
"Dennis Dalessandro" <dennis.dalessandro@intel.com>,
"Sudeep Dutt" <sudeep.dutt@intel.com>,
"Ashutosh Dixit" <ashutosh.dixit@intel.com>,
"Dimitri Sivanich" <sivanich@sgi.com>,
"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
"Juergen Gross" <jgross@suse.com>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Andrea Arcangeli" <aarcange@redhat.com>,
"Felix Kuehling" <felix.kuehling@amd.com>,
kvm@vger.kernel.org, amd-gfx@lists.freedesktop.org,
dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
linux-rdma@vger.kernel.org, xen-devel@lists.xenproject.org,
"Christian König" <christian.koenig@amd.com>,
"Leon Romanovsky" <leonro@mellanox.com>
Subject: Re: [PATCH] mm, oom: distinguish blockable mode for mmu notifiers
Date: Wed, 25 Jul 2018 08:13:55 +0200 [thread overview]
Message-ID: <20180725061355.GS28386@dhcp22.suse.cz> (raw)
In-Reply-To: <alpine.DEB.2.21.1807241405450.191477@chino.kir.corp.google.com>
On Tue 24-07-18 14:07:49, David Rientjes wrote:
[...]
> mm/oom_kill.c: clean up oom_reap_task_mm() fix
>
> indicate reaping has been partially skipped so we can expect future skips
> or another start before finish.
But we are not skipping. This is essentially the same case as mmap_sem
trylock fail. Maybe we can add a bool parameter to trace_finish_task_reaping
to denote partial success?
> Signed-off-by: David Rientjes <rientjes@google.com>
> ---
> mm/oom_kill.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/mm/oom_kill.c b/mm/oom_kill.c
> --- a/mm/oom_kill.c
> +++ b/mm/oom_kill.c
> @@ -569,10 +569,12 @@ static bool oom_reap_task_mm(struct task_struct *tsk, struct mm_struct *mm)
>
> trace_start_task_reaping(tsk->pid);
>
> - /* failed to reap part of the address space. Try again later */
> ret = __oom_reap_task_mm(mm);
> - if (!ret)
> + if (!ret) {
> + /* Failed to reap part of the address space. Try again later */
> + trace_skip_task_reaping(tsk->pid);
> goto out_finish;
> + }
>
> pr_info("oom_reaper: reaped process %d (%s), now anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB\n",
> task_pid_nr(tsk), tsk->comm,
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2018-07-25 6:14 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-16 11:50 [PATCH] mm, oom: distinguish blockable mode for mmu notifiers Michal Hocko
2018-07-16 23:12 ` Andrew Morton
2018-07-17 4:03 ` Leon Romanovsky
2018-07-17 8:12 ` Michal Hocko
2018-07-20 23:01 ` Andrew Morton
2018-07-23 8:43 ` Michal Hocko
2018-07-19 9:12 ` Michal Hocko
2018-07-21 0:09 ` Andrew Morton
2018-07-23 7:03 ` Michal Hocko
2018-07-23 7:11 ` Michal Hocko
2018-07-23 8:11 ` Michal Hocko
2018-07-24 14:17 ` Michal Hocko
2018-07-24 19:53 ` Andrew Morton
2018-07-25 6:17 ` Michal Hocko
2018-07-24 21:07 ` David Rientjes
2018-07-25 6:13 ` Michal Hocko [this message]
2018-08-24 10:54 ` Tetsuo Handa
2018-08-24 11:32 ` Michal Hocko
2018-08-24 11:43 ` Christian König
2018-08-24 11:52 ` Michal Hocko
2018-08-24 11:57 ` Christian König
2018-08-24 12:03 ` Michal Hocko
2018-08-24 12:18 ` Christian König
2018-08-24 12:33 ` Michal Hocko
2018-08-24 12:52 ` Christian König
2018-08-24 13:01 ` Michal Hocko
2018-08-24 13:10 ` Christian König
2018-08-24 13:24 ` Michal Hocko
2018-08-24 13:28 ` Christian König
2018-08-24 13:40 ` Michal Hocko
2018-08-24 13:44 ` Christian König
2018-08-24 13:52 ` Michal Hocko
2018-08-26 8:40 ` Tetsuo Handa
2018-08-27 7:41 ` Christian König
2018-09-06 22:46 ` Tetsuo Handa
2018-08-24 15:08 ` Jerome Glisse
2018-08-24 11:36 ` Michal Hocko
2018-08-24 13:02 ` Tetsuo Handa
2018-08-24 13:32 ` Michal Hocko
2018-08-24 14:52 ` Tetsuo Handa
2018-08-24 15:12 ` Jerome Glisse
2018-08-24 16:40 ` Michal Hocko
2018-08-24 17:33 ` Jerome Glisse
2018-08-24 16:38 ` Michal Hocko
2018-08-24 14:40 ` Jerome Glisse
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