From: Stephen Kitt <steve@sk2.org>
To: Jonathan Corbet <corbet@lwn.net>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Stephen Kitt <steve@sk2.org>
Subject: [PATCH v2 4/8] docs: add missing IPC documentation in sysctl/kernel.rst
Date: Tue, 18 Feb 2020 13:59:19 +0100 [thread overview]
Message-ID: <20200218125923.685-5-steve@sk2.org> (raw)
In-Reply-To: <20200218125923.685-1-steve@sk2.org>
This adds short descriptions of msgmax, msgmnb, msgmni, and shmmni,
which were previously listed in kernel.rst but not described.
Signed-off-by: Stephen Kitt <steve@sk2.org>
---
Documentation/admin-guide/sysctl/kernel.rst | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index d4fa06cab255..76ff10f6f63a 100644
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -409,6 +409,15 @@ to false. Generally used with the `kexec_load_disabled`_ toggle.
msgmax, msgmnb, and msgmni
==========================
+``msgmax`` is the maximum size of an IPC message, in bytes. 8192 by
+default (``MSGMAX``).
+
+``msgmnb`` is the maximum size of an IPC queue, in bytes. 16384 by
+default (``MSGMNB``).
+
+``msgmni`` is the maximum number of IPC queues. 32000 by default
+(``MSGMNI``).
+
msg_next_id, sem_next_id, and shm_next_id (System V IPC)
========================================================
@@ -957,6 +966,9 @@ kernel. This value defaults to ``SHMMAX``.
shmmni
======
+This value determines the maximum number of shared memory segments.
+4096 by default (``SHMMNI``).
+
shm_rmid_forced
===============
--
2.20.1
next prev parent reply other threads:[~2020-02-18 13:09 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-18 12:59 [PATCH v2 0/8] docs: sysctl/kernel.rst rework Stephen Kitt
2020-02-18 12:59 ` [PATCH v2 1/8] docs: pretty up sysctl/kernel.rst Stephen Kitt
2020-02-18 12:59 ` [PATCH v2 2/8] docs: merge debugging-modules.txt into sysctl/kernel.rst Stephen Kitt
2020-02-18 12:59 ` [PATCH v2 3/8] docs: drop l2cr from sysctl/kernel.rst Stephen Kitt
2020-02-18 12:59 ` Stephen Kitt [this message]
2020-02-18 12:59 ` [PATCH v2 5/8] docs: document stop-a in sysctl/kernel.rst Stephen Kitt
2020-02-18 12:59 ` [PATCH v2 6/8] docs: document panic fully " Stephen Kitt
2020-02-18 12:59 ` [PATCH v2 7/8] docs: add a script to check sysctl docs Stephen Kitt
2020-02-19 10:44 ` Jonathan Corbet
2020-02-19 15:25 ` Stephen Kitt
2020-02-19 17:33 ` Jonathan Corbet
2020-02-18 12:59 ` [PATCH v2 8/8] docs: sysctl/kernel: remove rtsig entries Stephen Kitt
2020-02-19 10:45 ` [PATCH v2 0/8] docs: sysctl/kernel.rst rework Jonathan Corbet
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