linux-kernel - [PATCH] mm: be more informative in OOM task list

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Message-Id: <7de14c6cac4a486c04149f37948e3a76028f3fa5.1530461087.git.rfreire@redhat.com>
Date:   Sun,  1 Jul 2018 13:09:40 -0300
From:   Rodrigo Freire <rfreire@...hat.com>
To:     linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] mm: be more informative in OOM task list

The default page memory unit of OOM task dump events might not be
intuitive for the non-initiated when debugging OOM events. Add
a small printk prior to the task dump informing that the memory
units are actually memory _pages_.

Signed-off-by: Rodrigo Freire <rfreire@...hat.com>
---
 mm/oom_kill.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 84081e7..b4d9557 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -392,6 +392,7 @@ static void dump_tasks(struct mem_cgroup *memcg, const nodemask_t *nodemask)
 	struct task_struct *p;
 	struct task_struct *task;
 
+	pr_info("Tasks state (memory values in pages):\n");
 	pr_info("[ pid ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name\n");
 	rcu_read_lock();
 	for_each_process(p) {
-- 
1.8.3.1