c-user: Sort configuration options alphabetically

Update #3836.

c-user/config/bdbuf.rst

@@ -35,31 +35,6 @@ NOTES:
     by the user with the configuration options below.  The Block Device Cache
     is used for example by the RFS and DOSFS file systems.
 
-.. index:: CONFIGURE_BDBUF_CACHE_MEMORY_SIZE
-
-.. _CONFIGURE_BDBUF_CACHE_MEMORY_SIZE:
-
-CONFIGURE_BDBUF_CACHE_MEMORY_SIZE
----------------------------------
-
-CONSTANT:
-    ``CONFIGURE_BDBUF_CACHE_MEMORY_SIZE``
-
-DATA TYPE:
-    Unsigned integer (``size_t``).
-
-RANGE:
-    Positive.
-
-DEFAULT VALUE:
-    The default value is 32768 bytes.
-
-DESCRIPTION:
-    Size of the cache memory in bytes.
-
-NOTES:
-    None.
-
 .. index:: CONFIGURE_BDBUF_BUFFER_MAX_SIZE
 
 .. _CONFIGURE_BDBUF_BUFFER_MAX_SIZE:
@@ -110,6 +85,31 @@ DESCRIPTION:
 NOTES:
     None.
 
+.. index:: CONFIGURE_BDBUF_CACHE_MEMORY_SIZE
+
+.. _CONFIGURE_BDBUF_CACHE_MEMORY_SIZE:
+
+CONFIGURE_BDBUF_CACHE_MEMORY_SIZE
+---------------------------------
+
+CONSTANT:
+    ``CONFIGURE_BDBUF_CACHE_MEMORY_SIZE``
+
+DATA TYPE:
+    Unsigned integer (``size_t``).
+
+RANGE:
+    Positive.
+
+DEFAULT VALUE:
+    The default value is 32768 bytes.
+
+DESCRIPTION:
+    Size of the cache memory in bytes.
+
+NOTES:
+    None.
+
 .. index:: CONFIGURE_BDBUF_MAX_READ_AHEAD_BLOCKS
 
 .. _CONFIGURE_BDBUF_MAX_READ_AHEAD_BLOCKS:

c-user/config/filesystem.rst

@@ -18,6 +18,8 @@ advanced application configuration.
 Features of the IMFS can be disabled and enabled with the following
 configuration options:
 
+* :ref:`CONFIGURE_IMFS_ENABLE_MKFIFO`
+
 * :ref:`CONFIGURE_IMFS_DISABLE_CHMOD`
 
 * :ref:`CONFIGURE_IMFS_DISABLE_CHOWN`
@@ -44,8 +46,6 @@ configuration options:
 
 * :ref:`CONFIGURE_IMFS_DISABLE_UTIME`
 
-* :ref:`CONFIGURE_IMFS_ENABLE_MKFIFO`
-
 .. index:: CONFIGURE_APPLICATION_DISABLE_FILESYSTEM
 
 .. _CONFIGURE_APPLICATION_DISABLE_FILESYSTEM:
@@ -74,29 +74,6 @@ DESCRIPTION:
 NOTES:
     None.
 
-.. index:: CONFIGURE_IMFS_ENABLE_MKFIFO
-
-.. _CONFIGURE_IMFS_ENABLE_MKFIFO:
-
-CONFIGURE_IMFS_ENABLE_MKFIFO
-----------------------------
-
-CONSTANT:
-    ``CONFIGURE_IMFS_ENABLE_MKFIFO``
-
-DATA TYPE:
-    Boolean feature macro.
-
-RANGE:
-    Defined or undefined.
-
-DEFAULT VALUE:
-    This is not defined by default.
-
-DESCRIPTION:
-    In case this configuration option is defined, then the support to make FIFOs
-    is enabled in the root IMFS.
-
 .. index:: CONFIGURE_IMFS_DISABLE_CHMOD
 
 .. _CONFIGURE_IMFS_DISABLE_CHMOD:
@@ -397,6 +374,29 @@ DESCRIPTION:
     In case this configuration option is defined, then the support to change
     times is disabled in the root IMFS.
 
+.. index:: CONFIGURE_IMFS_ENABLE_MKFIFO
+
+.. _CONFIGURE_IMFS_ENABLE_MKFIFO:
+
+CONFIGURE_IMFS_ENABLE_MKFIFO
+----------------------------
+
+CONSTANT:
+    ``CONFIGURE_IMFS_ENABLE_MKFIFO``
+
+DATA TYPE:
+    Boolean feature macro.
+
+RANGE:
+    Defined or undefined.
+
+DEFAULT VALUE:
+    This is not defined by default.
+
+DESCRIPTION:
+    In case this configuration option is defined, then the support to make FIFOs
+    is enabled in the root IMFS.
+
 .. index:: CONFIGURE_IMFS_MEMFILE_BYTES_PER_BLOCK
 
 .. _CONFIGURE_IMFS_MEMFILE_BYTES_PER_BLOCK:

c-user/config/posix-api.rst

@@ -155,35 +155,6 @@ NOTES:
     with ``sem_init()`` are not affected by this configuration option since the
     storage space for these semaphores is user-provided.
 
-.. index:: CONFIGURE_MAXIMUM_POSIX_TIMERS
-
-.. _CONFIGURE_MAXIMUM_POSIX_TIMERS:
-
-CONFIGURE_MAXIMUM_POSIX_TIMERS
-------------------------------
-
-CONSTANT:
-    ``CONFIGURE_MAXIMUM_POSIX_TIMERS``
-
-DATA TYPE:
-    Unsigned integer (``uint32_t``).
-
-RANGE:
-    Zero or positive.
-
-DEFAULT VALUE:
-    The default value is 0.
-
-DESCRIPTION:
-    ``CONFIGURE_MAXIMUM_POSIX_TIMERS`` is the maximum number of POSIX API
-    Timers that can be concurrently active.
-
-NOTES:
-    This object class can be configured in unlimited allocation mode.
-
-    Timers are only available if RTEMS was built with the
-    ``--enable-posix`` build configuration option.
-
 .. index:: CONFIGURE_MAXIMUM_POSIX_THREADS
 
 .. _CONFIGURE_MAXIMUM_POSIX_THREADS:
@@ -223,6 +194,35 @@ NOTES:
 
     All POSIX threads have floating point enabled.
 
+.. index:: CONFIGURE_MAXIMUM_POSIX_TIMERS
+
+.. _CONFIGURE_MAXIMUM_POSIX_TIMERS:
+
+CONFIGURE_MAXIMUM_POSIX_TIMERS
+------------------------------
+
+CONSTANT:
+    ``CONFIGURE_MAXIMUM_POSIX_TIMERS``
+
+DATA TYPE:
+    Unsigned integer (``uint32_t``).
+
+RANGE:
+    Zero or positive.
+
+DEFAULT VALUE:
+    The default value is 0.
+
+DESCRIPTION:
+    ``CONFIGURE_MAXIMUM_POSIX_TIMERS`` is the maximum number of POSIX API
+    Timers that can be concurrently active.
+
+NOTES:
+    This object class can be configured in unlimited allocation mode.
+
+    Timers are only available if RTEMS was built with the
+    ``--enable-posix`` build configuration option.
+
 .. index:: CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE
 .. index:: minimum POSIX thread stack size