The patch titled
Subject: mm/oom_kill: break evaluation when a task has been selected
has been added to the -mm mm-unstable branch. Its filename is
mm-oom_kill-break-evaluation-when-a-task-has-been-selected.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-oom_kill-break-evaluation-when-a-task-has-been-selected.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Zhaoyu Liu <zackary.liu.pro@xxxxxxxxx>
Subject: mm/oom_kill: break evaluation when a task has been selected
Date: Sat, 14 May 2022 15:52:28 +0800
oom points no longer need to be calculated if a task is oom_task_origin(),
so return 1 to stop the oom_evaluate_task().
Link: https://lkml.kernel.org/r/20220514075223.GA11384@pc
Signed-off-by: Zhaoyu Liu <zackary.liu.pro@xxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/oom_kill.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/oom_kill.c~mm-oom_kill-break-evaluation-when-a-task-has-been-selected
+++ a/mm/oom_kill.c
@@ -337,7 +337,7 @@ static enum oom_constraint constrained_a
static int oom_evaluate_task(struct task_struct *task, void *arg)
{
struct oom_control *oc = arg;
- long points;
+ long points = 0;
if (oom_unkillable_task(task))
goto next;
@@ -378,7 +378,7 @@ select:
oc->chosen = task;
oc->chosen_points = points;
next:
- return 0;
+ return points == LONG_MAX;
abort:
if (oc->chosen)
put_task_struct(oc->chosen);
_
Patches currently in -mm which might be from zackary.liu.pro@xxxxxxxxx are
mm-oom_kill-break-evaluation-when-a-task-has-been-selected.patch
