From: Roman Gushchin <guro@fb.com>
To: <linux-mm@kvack.org>
Cc: Roman Gushchin <guro@fb.com>, Tejun Heo <tj@kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Li Zefan <lizefan@huawei.com>, Michal Hocko <mhocko@kernel.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
<kernel-team@fb.com>, <cgroups@vger.kernel.org>,
<linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [RFC PATCH v2 3/7] mm, oom: export oom_evaluate_task() and select_bad_process()
Date: Thu, 1 Jun 2017 19:35:11 +0100 [thread overview]
Message-ID: <1496342115-3974-4-git-send-email-guro@fb.com> (raw)
In-Reply-To: <1496342115-3974-1-git-send-email-guro@fb.com>
Export the oom_evaluate_task() and select_bad_process()
functions to reuse them for victim selection logic
in the cgroup-aware OOM killer.
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: kernel-team@fb.com
Cc: cgroups@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org
---
include/linux/oom.h | 3 +++
mm/oom_kill.c | 5 ++---
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/include/linux/oom.h b/include/linux/oom.h
index 47d9495..edf7a77 100644
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -80,6 +80,9 @@ extern void oom_killer_enable(void);
extern struct task_struct *find_lock_task_mm(struct task_struct *p);
extern void __oom_kill_process(struct task_struct *victim);
+extern int oom_evaluate_task(struct task_struct *task, void *arg);
+extern void select_bad_process(struct oom_control *oc,
+ struct mem_cgroup *memcg);
/* sysctls */
extern int sysctl_oom_dump_tasks;
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 11b60a5..8cf77fb 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -288,7 +288,7 @@ static enum oom_constraint constrained_alloc(struct oom_control *oc)
return CONSTRAINT_NONE;
}
-static int oom_evaluate_task(struct task_struct *task, void *arg)
+int oom_evaluate_task(struct task_struct *task, void *arg)
{
struct oom_control *oc = arg;
unsigned long points;
@@ -343,8 +343,7 @@ static int oom_evaluate_task(struct task_struct *task, void *arg)
* Simple selection loop. We choose the process with the highest number of
* 'points'. In case scan was aborted, oc->chosen is set to -1.
*/
-static void select_bad_process(struct oom_control *oc,
- struct mem_cgroup *memcg)
+void select_bad_process(struct oom_control *oc, struct mem_cgroup *memcg)
{
if (memcg)
mem_cgroup_scan_tasks(memcg, oom_evaluate_task, oc);
--
2.7.4
next prev parent reply other threads:[~2017-06-01 18:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1496342115-3974-1-git-send-email-guro@fb.com>
2017-06-01 18:35 ` [RFC PATCH v2 1/7] mm, oom: refactor select_bad_process() to take memcg as an argument Roman Gushchin
2017-06-04 19:25 ` Vladimir Davydov
2017-06-04 22:50 ` David Rientjes
2017-06-06 16:20 ` Roman Gushchin
2017-06-06 20:42 ` David Rientjes
2017-06-08 15:59 ` Roman Gushchin
2017-06-01 18:35 ` [RFC PATCH v2 2/7] mm, oom: split oom_kill_process() and export __oom_kill_process() Roman Gushchin
2017-06-01 18:35 ` Roman Gushchin [this message]
2017-06-01 18:35 ` [RFC PATCH v2 4/7] mm, oom: introduce oom_kill_all_tasks option for memory cgroups Roman Gushchin
2017-06-04 19:30 ` Vladimir Davydov
2017-06-01 18:35 ` [RFC PATCH v2 5/7] mm, oom: introduce oom_score_adj " Roman Gushchin
2017-06-04 19:39 ` Vladimir Davydov
2017-06-01 18:35 ` [RFC PATCH v2 6/7] mm, oom: cgroup-aware OOM killer Roman Gushchin
2017-06-04 20:43 ` Vladimir Davydov
2017-06-06 15:59 ` Roman Gushchin
2017-06-01 18:35 ` [RFC PATCH v2 7/7] mm,oom,docs: describe the " Roman Gushchin
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