From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
Minchan Kim <minchan@kernel.org>,
linux-mm@kvack.org, cgroups@vger.kernel.org
Subject: Re: [rfc][patch 2/3] mm, oom: introduce helper function to process threads during scan
Date: Tue, 26 Jun 2012 02:05:04 -0400 [thread overview]
Message-ID: <CAHGf_=pOvakOtZA9fWRGchgSb8k80O0Y8D-yUrmFWuoQOqkePQ@mail.gmail.com> (raw)
In-Reply-To: <4FE92AF9.4050309@jp.fujitsu.com>
On Mon, Jun 25, 2012 at 11:22 PM, Kamezawa Hiroyuki
<kamezawa.hiroyu@jp.fujitsu.com> wrote:
> (2012/06/26 10:47), David Rientjes wrote:
>>
>> This patch introduces a helper function to process each thread during the
>> iteration over the tasklist. A new return type, enum oom_scan_t, is
>> defined to determine the future behavior of the iteration:
>>
>> - OOM_SCAN_OK: continue scanning the thread and find its badness,
>>
>> - OOM_SCAN_CONTINUE: do not consider this thread for oom kill, it's
>> ineligible,
>>
>> - OOM_SCAN_ABORT: abort the iteration and return, or
>>
>> - OOM_SCAN_SELECT: always select this thread with the highest badness
>> possible.
>>
>> There is no functional change with this patch. This new helper function
>> will be used in the next patch in the memory controller.
>>
>> Signed-off-by: David Rientjes <rientjes@google.com>
>
>
> I like this.
>
> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
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next prev parent reply other threads:[~2012-06-26 6:05 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-26 1:47 [patch 1/3] mm, oom: move declaration for mem_cgroup_out_of_memory to oom.h David Rientjes
2012-06-26 1:47 ` David Rientjes
2012-06-26 1:47 ` [rfc][patch 2/3] mm, oom: introduce helper function to process threads during scan David Rientjes
2012-06-26 1:47 ` David Rientjes
2012-06-26 3:22 ` Kamezawa Hiroyuki
2012-06-26 3:22 ` Kamezawa Hiroyuki
2012-06-26 6:05 ` KOSAKI Motohiro [this message]
2012-06-26 8:48 ` Michal Hocko
2012-06-26 8:48 ` Michal Hocko
2012-06-26 1:47 ` [rfc][patch 3/3] mm, memcg: introduce own oom handler to iterate only over its own threads David Rientjes
2012-06-26 1:47 ` David Rientjes
2012-06-26 5:32 ` Kamezawa Hiroyuki
2012-06-26 5:32 ` Kamezawa Hiroyuki
2012-06-26 20:38 ` David Rientjes
2012-06-27 5:35 ` David Rientjes
2012-06-27 5:35 ` David Rientjes
2012-06-28 1:43 ` David Rientjes
2012-06-28 1:43 ` David Rientjes
2012-06-28 17:16 ` Oleg Nesterov
2012-06-29 20:37 ` David Rientjes
2012-06-28 8:55 ` Kamezawa Hiroyuki
2012-06-28 8:55 ` Kamezawa Hiroyuki
2012-06-29 20:30 ` David Rientjes
2012-06-29 20:30 ` David Rientjes
2012-07-03 17:56 ` Oleg Nesterov
2012-06-28 8:52 ` Kamezawa Hiroyuki
2012-06-26 9:58 ` Michal Hocko
2012-06-26 9:58 ` Michal Hocko
2012-06-26 3:12 ` [patch 1/3] mm, oom: move declaration for mem_cgroup_out_of_memory to oom.h Kamezawa Hiroyuki
2012-06-26 6:04 ` KOSAKI Motohiro
2012-06-26 6:04 ` KOSAKI Motohiro
2012-06-26 8:34 ` Michal Hocko
2012-06-26 8:34 ` Michal Hocko
2012-06-29 21:06 ` [patch 1/5] " David Rientjes
2012-06-29 21:06 ` [patch 2/5] mm, oom: introduce helper function to process threads during scan David Rientjes
2012-06-29 21:06 ` David Rientjes
2012-07-12 7:18 ` Sha Zhengju
2012-07-12 7:18 ` Sha Zhengju
2012-06-29 21:06 ` [patch 3/5] mm, memcg: introduce own oom handler to iterate only over its own threads David Rientjes
2012-06-29 21:06 ` David Rientjes
2012-07-10 21:19 ` Andrew Morton
2012-07-10 21:19 ` Andrew Morton
2012-07-10 23:24 ` David Rientjes
2012-07-12 14:50 ` Sha Zhengju
2012-07-12 14:50 ` Sha Zhengju
2012-06-29 21:06 ` [patch 4/5] mm, oom: reduce dependency on tasklist_lock David Rientjes
2012-07-03 18:17 ` Oleg Nesterov
2012-07-03 18:17 ` Oleg Nesterov
2012-07-10 21:04 ` David Rientjes
2012-07-13 14:32 ` Michal Hocko
2012-07-13 14:32 ` Michal Hocko
2012-07-16 7:42 ` [PATCH mmotm] mm, oom: reduce dependency on tasklist_lock: fix Hugh Dickins
2012-07-16 7:42 ` Hugh Dickins
2012-07-16 8:06 ` Michal Hocko
2012-07-16 8:06 ` Michal Hocko
2012-07-16 9:01 ` Hugh Dickins
2012-07-16 9:27 ` Michal Hocko
2012-07-19 10:11 ` Kamezawa Hiroyuki
2012-07-19 10:11 ` Kamezawa Hiroyuki
2012-06-29 21:07 ` [patch 5/5] mm, memcg: move all oom handling to memcontrol.c David Rientjes
2012-06-29 21:07 ` David Rientjes
2012-07-04 5:51 ` Kamezawa Hiroyuki
2012-07-04 5:51 ` Kamezawa Hiroyuki
2012-07-13 14:34 ` Michal Hocko
2012-07-10 21:05 ` [patch 1/5] mm, oom: move declaration for mem_cgroup_out_of_memory to oom.h David Rientjes
2012-07-10 21:05 ` David Rientjes
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