Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1303674
| From | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. |
| Date | 2016-01-07 16:40 +0100 |
| Message-ID | <qOkPo-1zT-17@gated-at.bofh.it> (permalink) |
| References | <qL2YH-1hA-9@gated-at.bofh.it> <qOeTE-65o-23@gated-at.bofh.it> <qOiXf-hG-5@gated-at.bofh.it> <qOkcH-137-25@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Michal Hocko wrote:
> @@ -333,6 +333,14 @@ static struct task_struct *select_bad_process(struct oom_control *oc,
> if (points == chosen_points && thread_group_leader(chosen))
> continue;
>
> + /*
> + * If the current major task is already ooom killed and this
> + * is sysrq+f request then we rather choose somebody else
> + * because the current oom victim might be stuck.
> + */
> + if (is_sysrq_oom(sc) && test_tsk_thread_flag(p, TIF_MEMDIE))
> + continue;
> +
> chosen = p;
> chosen_points = points;
> }
Do we want to require SysRq-f for each thread in a process?
If g has 1024 p, dump_tasks() will do
pr_info("[%5d] %5d %5d %8lu %8lu %7ld %7ld %8lu %5hd %s\n",
for 1024 times? I think one SysRq-f per one process is sufficient.
How can we guarantee that find_lock_task_mm() from oom_kill_process()
chooses !TIF_MEMDIE thread when try_to_sacrifice_child() somehow chose
!TIF_MEMDIE thread? I think choosing !TIF_MEMDIE thread at
find_lock_task_mm() is the simplest way.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Michal Hocko <mhocko@kernel.org> - 2016-01-07 10:20 +0100
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-07 14:40 +0100
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Michal Hocko <mhocko@kernel.org> - 2016-01-07 16:00 +0100
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-07 16:40 +0100
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Michal Hocko <mhocko@kernel.org> - 2016-01-11 16:20 +0100
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-12 12:40 +0100
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Michal Hocko <mhocko@kernel.org> - 2016-01-12 21:00 +0100
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-13 11:20 +0100
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Michal Hocko <mhocko@kernel.org> - 2016-01-13 16:30 +0100
Re: [PATCH] mm,oom: Exclude TIF_MEMDIE processes from candidates. Michal Hocko <mhocko@kernel.org> - 2016-01-07 16:50 +0100
Re: [PATCH v2] mm,oom: Exclude TIF_MEMDIE processes from candidates. Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-08 11:20 +0100
Re: [PATCH v2] mm,oom: Exclude TIF_MEMDIE processes from candidates. David Rientjes <rientjes@google.com> - 2016-01-13 01:40 +0100
Re: [PATCH v2] mm,oom: Exclude TIF_MEMDIE processes from candidates. Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-13 12:00 +0100
Re: [PATCH v2] mm,oom: Exclude TIF_MEMDIE processes from candidates. David Rientjes <rientjes@google.com> - 2016-01-14 02:00 +0100
Re: [PATCH v2] mm,oom: Exclude TIF_MEMDIE processes from candidates. Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-14 11:30 +0100
Re: [PATCH v2] mm,oom: Exclude TIF_MEMDIE processes from candidates. David Rientjes <rientjes@google.com> - 2016-01-14 23:00 +0100
Re: [PATCH v2] mm,oom: Exclude TIF_MEMDIE processes from candidates. Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-14 23:30 +0100
csiph-web