[rtems-docs commit] c-user: Clarify CONFIGURE_MAXIMUM_SEMAPHORES

[Sebastian Huber]

Module:    rtems-docs
Branch:    master
Commit:    b12e82d3f9d92275c1a68396287dc34300043c12
Changeset: http://git.rtems.org/rtems-docs/commit/?id=b12e82d3f9d92275c1a68396287dc34300043c12

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Thu Dec 19 10:01:30 2019 +0100

c-user: Clarify CONFIGURE_MAXIMUM_SEMAPHORES

Close #3833.

---

 c-user/configuring_a_system.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/c-user/configuring_a_system.rst b/c-user/configuring_a_system.rst
index b385124..0f512df 100644
--- a/c-user/configuring_a_system.rst
+++ b/c-user/configuring_a_system.rst
@@ -1082,6 +1082,10 @@ DESCRIPTION:
 NOTES:
     This object class can be configured in unlimited allocation mode.
 
+    In SMP configurations, the size of a Semaphore Control Block depends on the
+    scheduler count (see :ref:`ConfigurationSchedulerTable`).  The semaphores
+    using the :ref:`MrsP` need a ceiling priority per scheduler.
+
 .. index:: CONFIGURE_MAXIMUM_MESSAGE_QUEUES
 
 .. _CONFIGURE_MAXIMUM_MESSAGE_QUEUES: