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-rw-r--r--Documentation/kernel-documentation.rst37
1 files changed, 31 insertions, 6 deletions
diff --git a/Documentation/kernel-documentation.rst b/Documentation/kernel-documentation.rst
index c4eb5049da39..10cc7ddb6235 100644
--- a/Documentation/kernel-documentation.rst
+++ b/Documentation/kernel-documentation.rst
@@ -107,6 +107,35 @@ Here are some specific guidelines for the kernel documentation:
the order as encountered."), having the higher levels the same overall makes
it easier to follow the documents.
+
+the C domain
+------------
+
+The `Sphinx C Domain`_ (name c) is suited for documentation of C API. E.g. a
+function prototype:
+
+.. code-block:: rst
+
+ .. c:function:: int ioctl( int fd, int request )
+
+The C domain of the kernel-doc has some additional features. E.g. you can
+*rename* the reference name of a function with a common name like ``open`` or
+``ioctl``:
+
+.. code-block:: rst
+
+ .. c:function:: int ioctl( int fd, int request )
+ :name: VIDIOC_LOG_STATUS
+
+The func-name (e.g. ioctl) remains in the output but the ref-name changed from
+``ioctl`` to ``VIDIOC_LOG_STATUS``. The index entry for this function is also
+changed to ``VIDIOC_LOG_STATUS`` and the function can now referenced by:
+
+.. code-block:: rst
+
+ :c:func:`VIDIOC_LOG_STATUS`
+
+
list tables
-----------
@@ -265,6 +294,8 @@ The kernel-doc extension is included in the kernel source tree, at
``scripts/kernel-doc`` script to extract the documentation comments from the
source.
+.. _kernel_doc:
+
Writing kernel-doc comments
===========================
@@ -366,8 +397,6 @@ Domain`_ references.
Cross-referencing from reStructuredText
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-.. highlight:: none
-
To cross-reference the functions and types defined in the kernel-doc comments
from reStructuredText documents, please use the `Sphinx C Domain`_
references. For example::
@@ -390,8 +419,6 @@ For further details, please refer to the `Sphinx C Domain`_ documentation.
Function documentation
----------------------
-.. highlight:: c
-
The general format of a function and function-like macro kernel-doc comment is::
/**
@@ -572,8 +599,6 @@ DocBook XML [DEPRECATED]
Converting DocBook to Sphinx
----------------------------
-.. highlight:: none
-
Over time, we expect all of the documents under ``Documentation/DocBook`` to be
converted to Sphinx and reStructuredText. For most DocBook XML documents, a good
enough solution is to use the simple ``Documentation/sphinx/tmplcvt`` script,