linux-kernel - [PATCH 2/2] doc, mm: clarify /proc/<pid>/oom

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Message-Id: <20200709062603.18480-2-mhocko@kernel.org>
Date:   Thu,  9 Jul 2020 08:26:03 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Jonathan Corbet <corbet@....net>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     David Rientjes <rientjes@...gle.com>,
        Yafang Shao <laoar.shao@...il.com>, <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Michal Hocko <mhocko@...e.com>
Subject: [PATCH 2/2] doc, mm: clarify /proc/<pid>/oom_score value range

From: Michal Hocko <mhocko@...e.com>

The exported value includes oom_score_adj so the range is no [0, 1000]
as described in the previous section but rather [0, 2000]. Mention that
fact explicitly.

Signed-off-by: Michal Hocko <mhocko@...e.com>
---
 Documentation/filesystems/proc.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
index 8e3b5dffcfa8..78a0dec323a3 100644
--- a/Documentation/filesystems/proc.rst
+++ b/Documentation/filesystems/proc.rst
@@ -1673,6 +1673,9 @@ requires CAP_SYS_RESOURCE.
 3.2 /proc/<pid>/oom_score - Display current oom-killer score
 -------------------------------------------------------------
 
+Please note that the exported value includes oom_score_adj so it is effectively
+in range [0,2000].
+
 This file can be used to check the current score used by the oom-killer is for
 any given <pid>. Use it together with /proc/<pid>/oom_score_adj to tune which
 process should be killed in an out-of-memory situation.
-- 
2.27.0