diff --git a/Documentation/conf.py b/Documentation/conf.py
index b691af4..6a76729 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -16,6 +16,8 @@
 import os
 import sphinx
 
+from subprocess import check_output
+
 # Get Sphinx version
 major, minor, patch = sphinx.version_info[:3]
 
@@ -34,10 +36,92 @@
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = ['kerneldoc', 'rstFlatTable', 'kernel_include', 'cdomain', 'kfigure', 'sphinx.ext.ifconfig']
+extensions = ['kerneldoc', 'rstFlatTable', 'kernel_include',
+              'kfigure', 'sphinx.ext.ifconfig', 'automarkup',
+              'maintainers_include', 'sphinx.ext.autosectionlabel',
+              'kernel_abi', 'kernel_feat']
+
+#
+# cdomain is badly broken in Sphinx 3+.  Leaving it out generates *most*
+# of the docs correctly, but not all.  Scream bloody murder but allow
+# the process to proceed; hopefully somebody will fix this properly soon.
+#
+if major >= 3:
+    sys.stderr.write('''WARNING: The kernel documentation build process
+        support for Sphinx v3.0 and above is brand new. Be prepared for
+        possible issues in the generated output.
+        ''')
+    if (major > 3) or (minor > 0 or patch >= 2):
+        # Sphinx c function parser is more pedantic with regards to type
+        # checking. Due to that, having macros at c:function cause problems.
+        # Those needed to be scaped by using c_id_attributes[] array
+        c_id_attributes = [
+            # GCC Compiler types not parsed by Sphinx:
+            "__restrict__",
+
+            # include/linux/compiler_types.h:
+            "__iomem",
+            "__kernel",
+            "noinstr",
+            "notrace",
+            "__percpu",
+            "__rcu",
+            "__user",
+
+            # include/linux/compiler_attributes.h:
+            "__alias",
+            "__aligned",
+            "__aligned_largest",
+            "__always_inline",
+            "__assume_aligned",
+            "__cold",
+            "__attribute_const__",
+            "__copy",
+            "__pure",
+            "__designated_init",
+            "__visible",
+            "__printf",
+            "__scanf",
+            "__gnu_inline",
+            "__malloc",
+            "__mode",
+            "__no_caller_saved_registers",
+            "__noclone",
+            "__nonstring",
+            "__noreturn",
+            "__packed",
+            "__pure",
+            "__section",
+            "__always_unused",
+            "__maybe_unused",
+            "__used",
+            "__weak",
+            "noinline",
+
+            # include/linux/memblock.h:
+            "__init_memblock",
+            "__meminit",
+
+            # include/linux/init.h:
+            "__init",
+            "__ref",
+
+            # include/linux/linkage.h:
+            "asmlinkage",
+        ]
+
+else:
+    extensions.append('cdomain')
+    if major == 1 and minor < 7:
+        sys.stderr.write('WARNING: Sphinx 1.7 or greater will be required as of '
+                         'the 5.12 release\n')
+
+# Ensure that autosectionlabel will produce unique names
+autosectionlabel_prefix_document = True
+autosectionlabel_maxdepth = 2
 
 # The name of the math extension changed on Sphinx 1.4
-if major == 1 and minor > 3:
+if (major == 1 and minor > 3) or (major > 1):
     extensions.append("sphinx.ext.imgmath")
 else:
     extensions.append("sphinx.ext.pngmath")
@@ -200,7 +284,7 @@
 
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.
-#html_use_smartypants = True
+html_use_smartypants = False
 
 # Custom sidebar templates, maps document names to template names.
 #html_sidebars = {}
@@ -259,7 +343,7 @@
 'papersize': 'a4paper',
 
 # The font size ('10pt', '11pt' or '12pt').
-'pointsize': '8pt',
+'pointsize': '11pt',
 
 # Latex figure (float) alignment
 #'figure_align': 'htbp',
@@ -272,13 +356,24 @@
     'preamble': '''
 	% Use some font with UTF-8 support with XeLaTeX
         \\usepackage{fontspec}
-        \\setsansfont{DejaVu Serif}
-        \\setromanfont{DejaVu Sans}
+        \\setsansfont{DejaVu Sans}
+        \\setromanfont{DejaVu Serif}
         \\setmonofont{DejaVu Sans Mono}
-
      '''
 }
 
+# At least one book (translations) may have Asian characters
+# with are only displayed if xeCJK is used
+
+cjk_cmd = check_output(['fc-list', '--format="%{family[0]}\n"']).decode('utf-8', 'ignore')
+if cjk_cmd.find("Noto Sans CJK SC") >= 0:
+    print ("enabling CJK for LaTeX builder")
+    latex_elements['preamble']  += '''
+	% This is needed for translations
+        \\usepackage{xeCJK}
+        \\setCJKmainfont{Noto Sans CJK SC}
+     '''
+
 # Fix reference escape troubles with Sphinx 1.4.x
 if major == 1 and minor > 3:
     latex_elements['preamble']  += '\\renewcommand*{\\DUrole}[2]{ #2 }\n'
@@ -369,42 +464,23 @@
 #  author, documentclass [howto, manual, or own class]).
 # Sorted in alphabetical order
 latex_documents = [
-    ('admin-guide/index', 'linux-user.tex', 'Linux Kernel User Documentation',
-     'The kernel development community', 'manual'),
-    ('core-api/index', 'core-api.tex', 'The kernel core API manual',
-     'The kernel development community', 'manual'),
-    ('crypto/index', 'crypto-api.tex', 'Linux Kernel Crypto API manual',
-     'The kernel development community', 'manual'),
-    ('dev-tools/index', 'dev-tools.tex', 'Development tools for the Kernel',
-     'The kernel development community', 'manual'),
-    ('doc-guide/index', 'kernel-doc-guide.tex', 'Linux Kernel Documentation Guide',
-     'The kernel development community', 'manual'),
-    ('driver-api/index', 'driver-api.tex', 'The kernel driver API manual',
-     'The kernel development community', 'manual'),
-    ('filesystems/index', 'filesystems.tex', 'Linux Filesystems API',
-     'The kernel development community', 'manual'),
-    ('gpu/index', 'gpu.tex', 'Linux GPU Driver Developer\'s Guide',
-     'The kernel development community', 'manual'),
-    ('input/index', 'linux-input.tex', 'The Linux input driver subsystem',
-     'The kernel development community', 'manual'),
-    ('kernel-hacking/index', 'kernel-hacking.tex', 'Unreliable Guide To Hacking The Linux Kernel',
-     'The kernel development community', 'manual'),
-    ('media/index', 'media.tex', 'Linux Media Subsystem Documentation',
-     'The kernel development community', 'manual'),
-    ('networking/index', 'networking.tex', 'Linux Networking Documentation',
-     'The kernel development community', 'manual'),
-    ('process/index', 'development-process.tex', 'Linux Kernel Development Documentation',
-     'The kernel development community', 'manual'),
-    ('security/index', 'security.tex', 'The kernel security subsystem manual',
-     'The kernel development community', 'manual'),
-    ('sh/index', 'sh.tex', 'SuperH architecture implementation manual',
-     'The kernel development community', 'manual'),
-    ('sound/index', 'sound.tex', 'Linux Sound Subsystem Documentation',
-     'The kernel development community', 'manual'),
-    ('userspace-api/index', 'userspace-api.tex', 'The Linux kernel user-space API guide',
-     'The kernel development community', 'manual'),
 ]
 
+# Add all other index files from Documentation/ subdirectories
+for fn in os.listdir('.'):
+    doc = os.path.join(fn, "index")
+    if os.path.exists(doc + ".rst"):
+        has = False
+        for l in latex_documents:
+            if l[0] == doc:
+                has = True
+                break
+        if not has:
+            latex_documents.append((doc, fn + '.tex',
+                                    'Linux %s Documentation' % fn.capitalize(),
+                                    'The kernel development community',
+                                    'manual'))
+
 # The name of an image file (relative to this directory) to place at the top of
 # the title page.
 #latex_logo = None
@@ -538,7 +614,7 @@
 # Grouping the document tree into PDF files. List of tuples
 # (source start file, target name, title, author, options).
 #
-# See the Sphinx chapter of http://ralsina.me/static/manual.pdf
+# See the Sphinx chapter of https://ralsina.me/static/manual.pdf
 #
 # FIXME: Do not add the index file here; the result will be too big. Adding
 # multiple PDF files here actually tries to get the cross-referencing right
diff --git a/Documentation/sphinx/automarkup.py b/Documentation/sphinx/automarkup.py
new file mode 100644
index 0000000..953b24b
--- /dev/null
+++ b/Documentation/sphinx/automarkup.py
@@ -0,0 +1,290 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright 2019 Jonathan Corbet <corbet@lwn.net>
+#
+# Apply kernel-specific tweaks after the initial document processing
+# has been done.
+#
+from docutils import nodes
+import sphinx
+from sphinx import addnodes
+if sphinx.version_info[0] < 2 or \
+   sphinx.version_info[0] == 2 and sphinx.version_info[1] < 1:
+    from sphinx.environment import NoUri
+else:
+    from sphinx.errors import NoUri
+import re
+from itertools import chain
+
+#
+# Python 2 lacks re.ASCII...
+#
+try:
+    ascii_p3 = re.ASCII
+except AttributeError:
+    ascii_p3 = 0
+
+#
+# Regex nastiness.  Of course.
+# Try to identify "function()" that's not already marked up some
+# other way.  Sphinx doesn't like a lot of stuff right after a
+# :c:func: block (i.e. ":c:func:`mmap()`s" flakes out), so the last
+# bit tries to restrict matches to things that won't create trouble.
+#
+RE_function = re.compile(r'\b(([a-zA-Z_]\w+)\(\))', flags=ascii_p3)
+
+#
+# Sphinx 2 uses the same :c:type role for struct, union, enum and typedef
+#
+RE_generic_type = re.compile(r'\b(struct|union|enum|typedef)\s+([a-zA-Z_]\w+)',
+                             flags=ascii_p3)
+
+#
+# Sphinx 3 uses a different C role for each one of struct, union, enum and
+# typedef
+#
+RE_struct = re.compile(r'\b(struct)\s+([a-zA-Z_]\w+)', flags=ascii_p3)
+RE_union = re.compile(r'\b(union)\s+([a-zA-Z_]\w+)', flags=ascii_p3)
+RE_enum = re.compile(r'\b(enum)\s+([a-zA-Z_]\w+)', flags=ascii_p3)
+RE_typedef = re.compile(r'\b(typedef)\s+([a-zA-Z_]\w+)', flags=ascii_p3)
+
+#
+# Detects a reference to a documentation page of the form Documentation/... with
+# an optional extension
+#
+RE_doc = re.compile(r'\bDocumentation(/[\w\-_/]+)(\.\w+)*')
+
+RE_namespace = re.compile(r'^\s*..\s*c:namespace::\s*(\S+)\s*$')
+
+#
+# Reserved C words that we should skip when cross-referencing
+#
+Skipnames = [ 'for', 'if', 'register', 'sizeof', 'struct', 'unsigned' ]
+
+
+#
+# Many places in the docs refer to common system calls.  It is
+# pointless to try to cross-reference them and, as has been known
+# to happen, somebody defining a function by these names can lead
+# to the creation of incorrect and confusing cross references.  So
+# just don't even try with these names.
+#
+Skipfuncs = [ 'open', 'close', 'read', 'write', 'fcntl', 'mmap',
+              'select', 'poll', 'fork', 'execve', 'clone', 'ioctl',
+              'socket' ]
+
+c_namespace = ''
+
+def markup_refs(docname, app, node):
+    t = node.astext()
+    done = 0
+    repl = [ ]
+    #
+    # Associate each regex with the function that will markup its matches
+    #
+    markup_func_sphinx2 = {RE_doc: markup_doc_ref,
+                           RE_function: markup_c_ref,
+                           RE_generic_type: markup_c_ref}
+
+    markup_func_sphinx3 = {RE_doc: markup_doc_ref,
+                           RE_function: markup_func_ref_sphinx3,
+                           RE_struct: markup_c_ref,
+                           RE_union: markup_c_ref,
+                           RE_enum: markup_c_ref,
+                           RE_typedef: markup_c_ref}
+
+    if sphinx.version_info[0] >= 3:
+        markup_func = markup_func_sphinx3
+    else:
+        markup_func = markup_func_sphinx2
+
+    match_iterators = [regex.finditer(t) for regex in markup_func]
+    #
+    # Sort all references by the starting position in text
+    #
+    sorted_matches = sorted(chain(*match_iterators), key=lambda m: m.start())
+    for m in sorted_matches:
+        #
+        # Include any text prior to match as a normal text node.
+        #
+        if m.start() > done:
+            repl.append(nodes.Text(t[done:m.start()]))
+
+        #
+        # Call the function associated with the regex that matched this text and
+        # append its return to the text
+        #
+        repl.append(markup_func[m.re](docname, app, m))
+
+        done = m.end()
+    if done < len(t):
+        repl.append(nodes.Text(t[done:]))
+    return repl
+
+#
+# In sphinx3 we can cross-reference to C macro and function, each one with its
+# own C role, but both match the same regex, so we try both.
+#
+def markup_func_ref_sphinx3(docname, app, match):
+    class_str = ['c-func', 'c-macro']
+    reftype_str = ['function', 'macro']
+
+    cdom = app.env.domains['c']
+    #
+    # Go through the dance of getting an xref out of the C domain
+    #
+    base_target = match.group(2)
+    target_text = nodes.Text(match.group(0))
+    xref = None
+    possible_targets = [base_target]
+    # Check if this document has a namespace, and if so, try
+    # cross-referencing inside it first.
+    if c_namespace:
+        possible_targets.insert(0, c_namespace + "." + base_target)
+
+    if base_target not in Skipnames:
+        for target in possible_targets:
+            if target not in Skipfuncs:
+                for class_s, reftype_s in zip(class_str, reftype_str):
+                    lit_text = nodes.literal(classes=['xref', 'c', class_s])
+                    lit_text += target_text
+                    pxref = addnodes.pending_xref('', refdomain = 'c',
+                                                  reftype = reftype_s,
+                                                  reftarget = target, modname = None,
+                                                  classname = None)
+                    #
+                    # XXX The Latex builder will throw NoUri exceptions here,
+                    # work around that by ignoring them.
+                    #
+                    try:
+                        xref = cdom.resolve_xref(app.env, docname, app.builder,
+                                                 reftype_s, target, pxref,
+                                                 lit_text)
+                    except NoUri:
+                        xref = None
+
+                    if xref:
+                        return xref
+
+    return target_text
+
+def markup_c_ref(docname, app, match):
+    class_str = {# Sphinx 2 only
+                 RE_function: 'c-func',
+                 RE_generic_type: 'c-type',
+                 # Sphinx 3+ only
+                 RE_struct: 'c-struct',
+                 RE_union: 'c-union',
+                 RE_enum: 'c-enum',
+                 RE_typedef: 'c-type',
+                 }
+    reftype_str = {# Sphinx 2 only
+                   RE_function: 'function',
+                   RE_generic_type: 'type',
+                   # Sphinx 3+ only
+                   RE_struct: 'struct',
+                   RE_union: 'union',
+                   RE_enum: 'enum',
+                   RE_typedef: 'type',
+                   }
+
+    cdom = app.env.domains['c']
+    #
+    # Go through the dance of getting an xref out of the C domain
+    #
+    base_target = match.group(2)
+    target_text = nodes.Text(match.group(0))
+    xref = None
+    possible_targets = [base_target]
+    # Check if this document has a namespace, and if so, try
+    # cross-referencing inside it first.
+    if c_namespace:
+        possible_targets.insert(0, c_namespace + "." + base_target)
+
+    if base_target not in Skipnames:
+        for target in possible_targets:
+            if not (match.re == RE_function and target in Skipfuncs):
+                lit_text = nodes.literal(classes=['xref', 'c', class_str[match.re]])
+                lit_text += target_text
+                pxref = addnodes.pending_xref('', refdomain = 'c',
+                                              reftype = reftype_str[match.re],
+                                              reftarget = target, modname = None,
+                                              classname = None)
+                #
+                # XXX The Latex builder will throw NoUri exceptions here,
+                # work around that by ignoring them.
+                #
+                try:
+                    xref = cdom.resolve_xref(app.env, docname, app.builder,
+                                             reftype_str[match.re], target, pxref,
+                                             lit_text)
+                except NoUri:
+                    xref = None
+
+                if xref:
+                    return xref
+
+    return target_text
+
+#
+# Try to replace a documentation reference of the form Documentation/... with a
+# cross reference to that page
+#
+def markup_doc_ref(docname, app, match):
+    stddom = app.env.domains['std']
+    #
+    # Go through the dance of getting an xref out of the std domain
+    #
+    target = match.group(1)
+    xref = None
+    pxref = addnodes.pending_xref('', refdomain = 'std', reftype = 'doc',
+                                  reftarget = target, modname = None,
+                                  classname = None, refexplicit = False)
+    #
+    # XXX The Latex builder will throw NoUri exceptions here,
+    # work around that by ignoring them.
+    #
+    try:
+        xref = stddom.resolve_xref(app.env, docname, app.builder, 'doc',
+                                   target, pxref, None)
+    except NoUri:
+        xref = None
+    #
+    # Return the xref if we got it; otherwise just return the plain text.
+    #
+    if xref:
+        return xref
+    else:
+        return nodes.Text(match.group(0))
+
+def get_c_namespace(app, docname):
+    source = app.env.doc2path(docname)
+    with open(source) as f:
+        for l in f:
+            match = RE_namespace.search(l)
+            if match:
+                return match.group(1)
+    return ''
+
+def auto_markup(app, doctree, name):
+    global c_namespace
+    c_namespace = get_c_namespace(app, name)
+    #
+    # This loop could eventually be improved on.  Someday maybe we
+    # want a proper tree traversal with a lot of awareness of which
+    # kinds of nodes to prune.  But this works well for now.
+    #
+    # The nodes.literal test catches ``literal text``, its purpose is to
+    # avoid adding cross-references to functions that have been explicitly
+    # marked with cc:func:.
+    #
+    for para in doctree.traverse(nodes.paragraph):
+        for node in para.traverse(nodes.Text):
+            if not isinstance(node.parent, nodes.literal):
+                node.parent.replace(node, markup_refs(name, app, node))
+
+def setup(app):
+    app.connect('doctree-resolved', auto_markup)
+    return {
+        'parallel_read_safe': True,
+        'parallel_write_safe': True,
+        }
diff --git a/Documentation/sphinx/cdomain.py b/Documentation/sphinx/cdomain.py
index cf13ff3..014a522 100644
--- a/Documentation/sphinx/cdomain.py
+++ b/Documentation/sphinx/cdomain.py
@@ -40,15 +40,98 @@
 from sphinx.domains.c import c_funcptr_sig_re, c_sig_re
 from sphinx.domains.c import CObject as Base_CObject
 from sphinx.domains.c import CDomain as Base_CDomain
+from itertools import chain
+import re
 
-__version__  = '1.0'
+__version__  = '1.1'
 
 # Get Sphinx version
 major, minor, patch = sphinx.version_info[:3]
 
+# Namespace to be prepended to the full name
+namespace = None
+
+#
+# Handle trivial newer c domain tags that are part of Sphinx 3.1 c domain tags
+# - Store the namespace if ".. c:namespace::" tag is found
+#
+RE_namespace = re.compile(r'^\s*..\s*c:namespace::\s*(\S+)\s*$')
+
+def markup_namespace(match):
+    global namespace
+
+    namespace = match.group(1)
+
+    return ""
+
+#
+# Handle c:macro for function-style declaration
+#
+RE_macro = re.compile(r'^\s*..\s*c:macro::\s*(\S+)\s+(\S.*)\s*$')
+def markup_macro(match):
+    return ".. c:function:: " + match.group(1) + ' ' + match.group(2)
+
+#
+# Handle newer c domain tags that are evaluated as .. c:type: for
+# backward-compatibility with Sphinx < 3.0
+#
+RE_ctype = re.compile(r'^\s*..\s*c:(struct|union|enum|enumerator|alias)::\s*(.*)$')
+
+def markup_ctype(match):
+    return ".. c:type:: " + match.group(2)
+
+#
+# Handle newer c domain tags that are evaluated as :c:type: for
+# backward-compatibility with Sphinx < 3.0
+#
+RE_ctype_refs = re.compile(r':c:(var|struct|union|enum|enumerator)::`([^\`]+)`')
+def markup_ctype_refs(match):
+    return ":c:type:`" + match.group(2) + '`'
+
+#
+# Simply convert :c:expr: and :c:texpr: into a literal block.
+#
+RE_expr = re.compile(r':c:(expr|texpr):`([^\`]+)`')
+def markup_c_expr(match):
+    return '\ ``' + match.group(2) + '``\ '
+
+#
+# Parse Sphinx 3.x C markups, replacing them by backward-compatible ones
+#
+def c_markups(app, docname, source):
+    result = ""
+    markup_func = {
+        RE_namespace: markup_namespace,
+        RE_expr: markup_c_expr,
+        RE_macro: markup_macro,
+        RE_ctype: markup_ctype,
+        RE_ctype_refs: markup_ctype_refs,
+    }
+
+    lines = iter(source[0].splitlines(True))
+    for n in lines:
+        match_iterators = [regex.finditer(n) for regex in markup_func]
+        matches = sorted(chain(*match_iterators), key=lambda m: m.start())
+        for m in matches:
+            n = n[:m.start()] + markup_func[m.re](m) + n[m.end():]
+
+        result = result + n
+
+    source[0] = result
+
+#
+# Now implements support for the cdomain namespacing logic
+#
+
 def setup(app):
 
-    app.override_domain(CDomain)
+    # Handle easy Sphinx 3.1+ simple new tags: :c:expr and .. c:namespace::
+    app.connect('source-read', c_markups)
+
+    if (major == 1 and minor < 8):
+        app.override_domain(CDomain)
+    else:
+        app.add_domain(CDomain, override=True)
 
     return dict(
         version = __version__,
@@ -72,6 +155,8 @@
         function-like macro, the name of the macro is returned. Otherwise
         ``False`` is returned.  """
 
+        global namespace
+
         if not self.objtype == 'function':
             return False
 
@@ -104,11 +189,16 @@
             param += nodes.emphasis(argname, argname)
             paramlist += param
 
+        if namespace:
+            fullname = namespace + "." + fullname
+
         return fullname
 
     def handle_signature(self, sig, signode):
         """Transform a C signature into RST nodes."""
 
+        global namespace
+
         fullname = self.handle_func_like_macro(sig, signode)
         if not fullname:
             fullname = super(CObject, self).handle_signature(sig, signode)
@@ -119,6 +209,10 @@
             else:
                 # FIXME: handle :name: value of other declaration types?
                 pass
+        else:
+            if namespace:
+                fullname = namespace + "." + fullname
+
         return fullname
 
     def add_target_and_index(self, name, sig, signode):
diff --git a/Documentation/sphinx/kernel_abi.py b/Documentation/sphinx/kernel_abi.py
new file mode 100644
index 0000000..f3da859c
--- /dev/null
+++ b/Documentation/sphinx/kernel_abi.py
@@ -0,0 +1,194 @@
+# -*- coding: utf-8; mode: python -*-
+# coding=utf-8
+# SPDX-License-Identifier: GPL-2.0
+#
+u"""
+    kernel-abi
+    ~~~~~~~~~~
+
+    Implementation of the ``kernel-abi`` reST-directive.
+
+    :copyright:  Copyright (C) 2016  Markus Heiser
+    :copyright:  Copyright (C) 2016-2020  Mauro Carvalho Chehab
+    :maintained-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+    :license:    GPL Version 2, June 1991 see Linux/COPYING for details.
+
+    The ``kernel-abi`` (:py:class:`KernelCmd`) directive calls the
+    scripts/get_abi.pl script to parse the Kernel ABI files.
+
+    Overview of directive's argument and options.
+
+    .. code-block:: rst
+
+        .. kernel-abi:: <ABI directory location>
+            :debug:
+
+    The argument ``<ABI directory location>`` is required. It contains the
+    location of the ABI files to be parsed.
+
+    ``debug``
+      Inserts a code-block with the *raw* reST. Sometimes it is helpful to see
+      what reST is generated.
+
+"""
+
+import codecs
+import os
+import subprocess
+import sys
+import re
+import kernellog
+
+from os import path
+
+from docutils import nodes, statemachine
+from docutils.statemachine import ViewList
+from docutils.parsers.rst import directives, Directive
+from docutils.utils.error_reporting import ErrorString
+
+#
+# AutodocReporter is only good up to Sphinx 1.7
+#
+import sphinx
+
+Use_SSI = sphinx.__version__[:3] >= '1.7'
+if Use_SSI:
+    from sphinx.util.docutils import switch_source_input
+else:
+    from sphinx.ext.autodoc import AutodocReporter
+
+__version__  = '1.0'
+
+def setup(app):
+
+    app.add_directive("kernel-abi", KernelCmd)
+    return dict(
+        version = __version__
+        , parallel_read_safe = True
+        , parallel_write_safe = True
+    )
+
+class KernelCmd(Directive):
+
+    u"""KernelABI (``kernel-abi``) directive"""
+
+    required_arguments = 1
+    optional_arguments = 2
+    has_content = False
+    final_argument_whitespace = True
+
+    option_spec = {
+        "debug"     : directives.flag,
+        "rst"       : directives.unchanged
+    }
+
+    def run(self):
+
+        doc = self.state.document
+        if not doc.settings.file_insertion_enabled:
+            raise self.warning("docutils: file insertion disabled")
+
+        env = doc.settings.env
+        cwd = path.dirname(doc.current_source)
+        cmd = "get_abi.pl rest --enable-lineno --dir "
+        cmd += self.arguments[0]
+
+        if 'rst' in self.options:
+            cmd += " --rst-source"
+
+        srctree = path.abspath(os.environ["srctree"])
+
+        fname = cmd
+
+        # extend PATH with $(srctree)/scripts
+        path_env = os.pathsep.join([
+            srctree + os.sep + "scripts",
+            os.environ["PATH"]
+        ])
+        shell_env = os.environ.copy()
+        shell_env["PATH"]    = path_env
+        shell_env["srctree"] = srctree
+
+        lines = self.runCmd(cmd, shell=True, cwd=cwd, env=shell_env)
+        nodeList = self.nestedParse(lines, self.arguments[0])
+        return nodeList
+
+    def runCmd(self, cmd, **kwargs):
+        u"""Run command ``cmd`` and return it's stdout as unicode."""
+
+        try:
+            proc = subprocess.Popen(
+                cmd
+                , stdout = subprocess.PIPE
+                , stderr = subprocess.PIPE
+                , **kwargs
+            )
+            out, err = proc.communicate()
+
+            out, err = codecs.decode(out, 'utf-8'), codecs.decode(err, 'utf-8')
+
+            if proc.returncode != 0:
+                raise self.severe(
+                    u"command '%s' failed with return code %d"
+                    % (cmd, proc.returncode)
+                )
+        except OSError as exc:
+            raise self.severe(u"problems with '%s' directive: %s."
+                              % (self.name, ErrorString(exc)))
+        return out
+
+    def nestedParse(self, lines, fname):
+        content = ViewList()
+        node = nodes.section()
+
+        if "debug" in self.options:
+            code_block = "\n\n.. code-block:: rst\n    :linenos:\n"
+            for l in lines.split("\n"):
+                code_block += "\n    " + l
+            lines = code_block + "\n\n"
+
+        line_regex = re.compile("^#define LINENO (\S+)\#([0-9]+)$")
+        ln = 0
+        n = 0
+        f = fname
+
+        for line in lines.split("\n"):
+            n = n + 1
+            match = line_regex.search(line)
+            if match:
+                new_f = match.group(1)
+
+                # Sphinx parser is lazy: it stops parsing contents in the
+                # middle, if it is too big. So, handle it per input file
+                if new_f != f and content:
+                    self.do_parse(content, node)
+                    content = ViewList()
+
+                f = new_f
+
+                # sphinx counts lines from 0
+                ln = int(match.group(2)) - 1
+            else:
+                content.append(line, f, ln)
+
+        kernellog.info(self.state.document.settings.env.app, "%s: parsed %i lines" % (fname, n))
+
+        if content:
+            self.do_parse(content, node)
+
+        return node.children
+
+    def do_parse(self, content, node):
+        if Use_SSI:
+            with switch_source_input(self.state, content):
+                self.state.nested_parse(content, 0, node, match_titles=1)
+        else:
+            buf  = self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter
+
+            self.state.memo.title_styles  = []
+            self.state.memo.section_level = 0
+            self.state.memo.reporter      = AutodocReporter(content, self.state.memo.reporter)
+            try:
+                self.state.nested_parse(content, 0, node, match_titles=1)
+            finally:
+                self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter = buf
diff --git a/Documentation/sphinx/kernel_feat.py b/Documentation/sphinx/kernel_feat.py
new file mode 100644
index 0000000..2fee04f
--- /dev/null
+++ b/Documentation/sphinx/kernel_feat.py
@@ -0,0 +1,169 @@
+# coding=utf-8
+# SPDX-License-Identifier: GPL-2.0
+#
+u"""
+    kernel-feat
+    ~~~~~~~~~~~
+
+    Implementation of the ``kernel-feat`` reST-directive.
+
+    :copyright:  Copyright (C) 2016  Markus Heiser
+    :copyright:  Copyright (C) 2016-2019  Mauro Carvalho Chehab
+    :maintained-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
+    :license:    GPL Version 2, June 1991 see Linux/COPYING for details.
+
+    The ``kernel-feat`` (:py:class:`KernelFeat`) directive calls the
+    scripts/get_feat.pl script to parse the Kernel ABI files.
+
+    Overview of directive's argument and options.
+
+    .. code-block:: rst
+
+        .. kernel-feat:: <ABI directory location>
+            :debug:
+
+    The argument ``<ABI directory location>`` is required. It contains the
+    location of the ABI files to be parsed.
+
+    ``debug``
+      Inserts a code-block with the *raw* reST. Sometimes it is helpful to see
+      what reST is generated.
+
+"""
+
+import codecs
+import os
+import subprocess
+import sys
+
+from os import path
+
+from docutils import nodes, statemachine
+from docutils.statemachine import ViewList
+from docutils.parsers.rst import directives, Directive
+from docutils.utils.error_reporting import ErrorString
+
+#
+# AutodocReporter is only good up to Sphinx 1.7
+#
+import sphinx
+
+Use_SSI = sphinx.__version__[:3] >= '1.7'
+if Use_SSI:
+    from sphinx.util.docutils import switch_source_input
+else:
+    from sphinx.ext.autodoc import AutodocReporter
+
+__version__  = '1.0'
+
+def setup(app):
+
+    app.add_directive("kernel-feat", KernelFeat)
+    return dict(
+        version = __version__
+        , parallel_read_safe = True
+        , parallel_write_safe = True
+    )
+
+class KernelFeat(Directive):
+
+    u"""KernelFeat (``kernel-feat``) directive"""
+
+    required_arguments = 1
+    optional_arguments = 2
+    has_content = False
+    final_argument_whitespace = True
+
+    option_spec = {
+        "debug"     : directives.flag
+    }
+
+    def warn(self, message, **replace):
+        replace["fname"]   = self.state.document.current_source
+        replace["line_no"] = replace.get("line_no", self.lineno)
+        message = ("%(fname)s:%(line_no)s: [kernel-feat WARN] : " + message) % replace
+        self.state.document.settings.env.app.warn(message, prefix="")
+
+    def run(self):
+
+        doc = self.state.document
+        if not doc.settings.file_insertion_enabled:
+            raise self.warning("docutils: file insertion disabled")
+
+        env = doc.settings.env
+        cwd = path.dirname(doc.current_source)
+        cmd = "get_feat.pl rest --dir "
+        cmd += self.arguments[0]
+
+        if len(self.arguments) > 1:
+            cmd += " --arch " + self.arguments[1]
+
+        srctree = path.abspath(os.environ["srctree"])
+
+        fname = cmd
+
+        # extend PATH with $(srctree)/scripts
+        path_env = os.pathsep.join([
+            srctree + os.sep + "scripts",
+            os.environ["PATH"]
+        ])
+        shell_env = os.environ.copy()
+        shell_env["PATH"]    = path_env
+        shell_env["srctree"] = srctree
+
+        lines = self.runCmd(cmd, shell=True, cwd=cwd, env=shell_env)
+        nodeList = self.nestedParse(lines, fname)
+        return nodeList
+
+    def runCmd(self, cmd, **kwargs):
+        u"""Run command ``cmd`` and return it's stdout as unicode."""
+
+        try:
+            proc = subprocess.Popen(
+                cmd
+                , stdout = subprocess.PIPE
+                , stderr = subprocess.PIPE
+                , **kwargs
+            )
+            out, err = proc.communicate()
+
+            out, err = codecs.decode(out, 'utf-8'), codecs.decode(err, 'utf-8')
+
+            if proc.returncode != 0:
+                raise self.severe(
+                    u"command '%s' failed with return code %d"
+                    % (cmd, proc.returncode)
+                )
+        except OSError as exc:
+            raise self.severe(u"problems with '%s' directive: %s."
+                              % (self.name, ErrorString(exc)))
+        return out
+
+    def nestedParse(self, lines, fname):
+        content = ViewList()
+        node    = nodes.section()
+
+        if "debug" in self.options:
+            code_block = "\n\n.. code-block:: rst\n    :linenos:\n"
+            for l in lines.split("\n"):
+                code_block += "\n    " + l
+            lines = code_block + "\n\n"
+
+        for c, l in enumerate(lines.split("\n")):
+            content.append(l, fname, c)
+
+        buf  = self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter
+
+        if Use_SSI:
+            with switch_source_input(self.state, content):
+                self.state.nested_parse(content, 0, node, match_titles=1)
+        else:
+            self.state.memo.title_styles  = []
+            self.state.memo.section_level = 0
+            self.state.memo.reporter      = AutodocReporter(content, self.state.memo.reporter)
+            try:
+                self.state.nested_parse(content, 0, node, match_titles=1)
+            finally:
+                self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter = buf
+
+        return node.children
diff --git a/Documentation/sphinx/kerneldoc.py b/Documentation/sphinx/kerneldoc.py
index 9d0a7f0..e9857ab 100644
--- a/Documentation/sphinx/kerneldoc.py
+++ b/Documentation/sphinx/kerneldoc.py
@@ -37,7 +37,19 @@
 from docutils import nodes, statemachine
 from docutils.statemachine import ViewList
 from docutils.parsers.rst import directives, Directive
-from sphinx.ext.autodoc import AutodocReporter
+
+#
+# AutodocReporter is only good up to Sphinx 1.7
+#
+import sphinx
+
+Use_SSI = sphinx.__version__[:3] >= '1.7'
+if Use_SSI:
+    from sphinx.util.docutils import switch_source_input
+else:
+    from sphinx.ext.autodoc import AutodocReporter
+
+import kernellog
 
 __version__  = '1.0'
 
@@ -47,9 +59,11 @@
     optional_arguments = 4
     option_spec = {
         'doc': directives.unchanged_required,
-        'functions': directives.unchanged,
         'export': directives.unchanged,
         'internal': directives.unchanged,
+        'identifiers': directives.unchanged,
+        'no-identifiers': directives.unchanged,
+        'functions': directives.unchanged,
     }
     has_content = False
 
@@ -57,6 +71,11 @@
         env = self.state.document.settings.env
         cmd = [env.config.kerneldoc_bin, '-rst', '-enable-lineno']
 
+	# Pass the version string to kernel-doc, as it needs to use a different
+	# dialect, depending what the C domain supports for each specific
+	# Sphinx versions
+        cmd += ['-sphinx-version', sphinx.__version__]
+
         filename = env.config.kerneldoc_srctree + '/' + self.arguments[0]
         export_file_patterns = []
 
@@ -65,6 +84,10 @@
 
         tab_width = self.options.get('tab-width', self.state.document.settings.tab_width)
 
+        # 'function' is an alias of 'identifiers'
+        if 'functions' in self.options:
+            self.options['identifiers'] = self.options.get('functions')
+
         # FIXME: make this nicer and more robust against errors
         if 'export' in self.options:
             cmd += ['-export']
@@ -74,14 +97,20 @@
             export_file_patterns = str(self.options.get('internal')).split()
         elif 'doc' in self.options:
             cmd += ['-function', str(self.options.get('doc'))]
-        elif 'functions' in self.options:
-            functions = self.options.get('functions').split()
-            if functions:
-                for f in functions:
-                    cmd += ['-function', f]
+        elif 'identifiers' in self.options:
+            identifiers = self.options.get('identifiers').split()
+            if identifiers:
+                for i in identifiers:
+                    cmd += ['-function', i]
             else:
                 cmd += ['-no-doc-sections']
 
+        if 'no-identifiers' in self.options:
+            no_identifiers = self.options.get('no-identifiers').split()
+            if no_identifiers:
+                for i in no_identifiers:
+                    cmd += ['-nosymbol', i]
+
         for pattern in export_file_patterns:
             for f in glob.glob(env.config.kerneldoc_srctree + '/' + pattern):
                 env.note_dependency(os.path.abspath(f))
@@ -90,7 +119,8 @@
         cmd += [filename]
 
         try:
-            env.app.verbose('calling kernel-doc \'%s\'' % (" ".join(cmd)))
+            kernellog.verbose(env.app,
+                              'calling kernel-doc \'%s\'' % (" ".join(cmd)))
 
             p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
             out, err = p.communicate()
@@ -100,7 +130,8 @@
             if p.returncode != 0:
                 sys.stderr.write(err)
 
-                env.app.warn('kernel-doc \'%s\' failed with return code %d' % (" ".join(cmd), p.returncode))
+                kernellog.warn(env.app,
+                               'kernel-doc \'%s\' failed with return code %d' % (" ".join(cmd), p.returncode))
                 return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
             elif env.config.kerneldoc_verbosity > 0:
                 sys.stderr.write(err)
@@ -117,24 +148,33 @@
                     lineoffset = int(match.group(1)) - 1
                     # we must eat our comments since the upset the markup
                 else:
-                    result.append(line, filename, lineoffset)
+                    doc = env.srcdir + "/" + env.docname + ":" + str(self.lineno)
+                    result.append(line, doc + ": " + filename, lineoffset)
                     lineoffset += 1
 
             node = nodes.section()
-            buf = self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter
+            self.do_parse(result, node)
+
+            return node.children
+
+        except Exception as e:  # pylint: disable=W0703
+            kernellog.warn(env.app, 'kernel-doc \'%s\' processing failed with: %s' %
+                           (" ".join(cmd), str(e)))
+            return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
+
+    def do_parse(self, result, node):
+        if Use_SSI:
+            with switch_source_input(self.state, result):
+                self.state.nested_parse(result, 0, node, match_titles=1)
+        else:
+            save = self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter
             self.state.memo.reporter = AutodocReporter(result, self.state.memo.reporter)
             self.state.memo.title_styles, self.state.memo.section_level = [], 0
             try:
                 self.state.nested_parse(result, 0, node, match_titles=1)
             finally:
-                self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter = buf
+                self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter = save
 
-            return node.children
-
-        except Exception as e:  # pylint: disable=W0703
-            env.app.warn('kernel-doc \'%s\' processing failed with: %s' %
-                         (" ".join(cmd), str(e)))
-            return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
 
 def setup(app):
     app.add_config_value('kerneldoc_bin', None, 'env')
diff --git a/Documentation/sphinx/kernellog.py b/Documentation/sphinx/kernellog.py
new file mode 100644
index 0000000..8ac7d27
--- /dev/null
+++ b/Documentation/sphinx/kernellog.py
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Sphinx has deprecated its older logging interface, but the replacement
+# only goes back to 1.6.  So here's a wrapper layer to keep around for
+# as long as we support 1.4.
+#
+import sphinx
+
+if sphinx.__version__[:3] >= '1.6':
+    UseLogging = True
+    from sphinx.util import logging
+    logger = logging.getLogger('kerneldoc')
+else:
+    UseLogging = False
+
+def warn(app, message):
+    if UseLogging:
+        logger.warning(message)
+    else:
+        app.warn(message)
+
+def verbose(app, message):
+    if UseLogging:
+        logger.verbose(message)
+    else:
+        app.verbose(message)
+
+def info(app, message):
+    if UseLogging:
+        logger.info(message)
+    else:
+        app.info(message)
diff --git a/Documentation/sphinx/kfigure.py b/Documentation/sphinx/kfigure.py
index b97228d..7887048 100644
--- a/Documentation/sphinx/kfigure.py
+++ b/Documentation/sphinx/kfigure.py
@@ -29,7 +29,7 @@
 
     Used tools:
 
-    * ``dot(1)``: Graphviz (http://www.graphviz.org). If Graphviz is not
+    * ``dot(1)``: Graphviz (https://www.graphviz.org). If Graphviz is not
       available, the DOT language is inserted as literal-block.
 
     * SVG to PDF: To generate PDF, you need at least one of this tools:
@@ -41,7 +41,7 @@
     * generate PDF from SVG / used by PDF (LaTeX) builder
 
     * generate SVG (html-builder) and PDF (latex-builder) from DOT files.
-      DOT: see http://www.graphviz.org/content/dot-language
+      DOT: see https://www.graphviz.org/content/dot-language
 
     """
 
@@ -60,6 +60,8 @@
 from sphinx.util.nodes import clean_astext
 from six import iteritems
 
+import kernellog
+
 PY3 = sys.version_info[0] == 3
 
 if PY3:
@@ -171,20 +173,20 @@
     This function is called once, when the builder is initiated.
     """
     global dot_cmd, convert_cmd   # pylint: disable=W0603
-    app.verbose("kfigure: check installed tools ...")
+    kernellog.verbose(app, "kfigure: check installed tools ...")
 
     dot_cmd = which('dot')
     convert_cmd = which('convert')
 
     if dot_cmd:
-        app.verbose("use dot(1) from: " + dot_cmd)
+        kernellog.verbose(app, "use dot(1) from: " + dot_cmd)
     else:
-        app.warn("dot(1) not found, for better output quality install "
-                 "graphviz from http://www.graphviz.org")
+        kernellog.warn(app, "dot(1) not found, for better output quality install "
+                       "graphviz from https://www.graphviz.org")
     if convert_cmd:
-        app.verbose("use convert(1) from: " + convert_cmd)
+        kernellog.verbose(app, "use convert(1) from: " + convert_cmd)
     else:
-        app.warn(
+        kernellog.warn(app,
             "convert(1) not found, for SVG to PDF conversion install "
             "ImageMagick (https://www.imagemagick.org)")
 
@@ -220,12 +222,13 @@
 
     # in kernel builds, use 'make SPHINXOPTS=-v' to see verbose messages
 
-    app.verbose('assert best format for: ' + img_node['uri'])
+    kernellog.verbose(app, 'assert best format for: ' + img_node['uri'])
 
     if in_ext == '.dot':
 
         if not dot_cmd:
-            app.verbose("dot from graphviz not available / include DOT raw.")
+            kernellog.verbose(app,
+                              "dot from graphviz not available / include DOT raw.")
             img_node.replace_self(file2literal(src_fname))
 
         elif translator.builder.format == 'latex':
@@ -252,7 +255,8 @@
 
         if translator.builder.format == 'latex':
             if convert_cmd is None:
-                app.verbose("no SVG to PDF conversion available / include SVG raw.")
+                kernellog.verbose(app,
+                                  "no SVG to PDF conversion available / include SVG raw.")
                 img_node.replace_self(file2literal(src_fname))
             else:
                 dst_fname = path.join(translator.builder.outdir, fname + '.pdf')
@@ -265,18 +269,19 @@
         _name = dst_fname[len(translator.builder.outdir) + 1:]
 
         if isNewer(dst_fname, src_fname):
-            app.verbose("convert: {out}/%s already exists and is newer" % _name)
+            kernellog.verbose(app,
+                              "convert: {out}/%s already exists and is newer" % _name)
 
         else:
             ok = False
             mkdir(path.dirname(dst_fname))
 
             if in_ext == '.dot':
-                app.verbose('convert DOT to: {out}/' + _name)
+                kernellog.verbose(app, 'convert DOT to: {out}/' + _name)
                 ok = dot2format(app, src_fname, dst_fname)
 
             elif in_ext == '.svg':
-                app.verbose('convert SVG to: {out}/' + _name)
+                kernellog.verbose(app, 'convert SVG to: {out}/' + _name)
                 ok = svg2pdf(app, src_fname, dst_fname)
 
             if not ok:
@@ -305,7 +310,8 @@
     with open(out_fname, "w") as out:
         exit_code = subprocess.call(cmd, stdout = out)
         if exit_code != 0:
-            app.warn("Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
+            kernellog.warn(app,
+                          "Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
     return bool(exit_code == 0)
 
 def svg2pdf(app, svg_fname, pdf_fname):
@@ -322,7 +328,7 @@
     # use stdout and stderr from parent
     exit_code = subprocess.call(cmd)
     if exit_code != 0:
-        app.warn("Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
+        kernellog.warn(app, "Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
     return bool(exit_code == 0)
 
 
@@ -415,15 +421,15 @@
     app = self.builder.app
     srclang = node.get('srclang')
 
-    app.verbose('visit kernel-render node lang: "%s"' % (srclang))
+    kernellog.verbose(app, 'visit kernel-render node lang: "%s"' % (srclang))
 
     tmp_ext = RENDER_MARKUP_EXT.get(srclang, None)
     if tmp_ext is None:
-        app.warn('kernel-render: "%s" unknown / include raw.' % (srclang))
+        kernellog.warn(app, 'kernel-render: "%s" unknown / include raw.' % (srclang))
         return
 
     if not dot_cmd and tmp_ext == '.dot':
-        app.verbose("dot from graphviz not available / include raw.")
+        kernellog.verbose(app, "dot from graphviz not available / include raw.")
         return
 
     literal_block = node[0]
diff --git a/Documentation/sphinx/load_config.py b/Documentation/sphinx/load_config.py
index 301a21a..eeb394b 100644
--- a/Documentation/sphinx/load_config.py
+++ b/Documentation/sphinx/load_config.py
@@ -21,6 +21,29 @@
         and os.path.normpath(namespace["__file__"]) != os.path.normpath(config_file) ):
         config_file = os.path.abspath(config_file)
 
+        # Let's avoid one conf.py file just due to latex_documents
+        start = config_file.find('Documentation/')
+        if start >= 0:
+            start = config_file.find('/', start + 1)
+
+        end = config_file.rfind('/')
+        if start >= 0 and end > 0:
+            dir = config_file[start + 1:end]
+
+            print("source directory: %s" % dir)
+            new_latex_docs = []
+            latex_documents = namespace['latex_documents']
+
+            for l in latex_documents:
+                if l[0].find(dir + '/') == 0:
+                    has = True
+                    fn = l[0][len(dir) + 1:]
+                    new_latex_docs.append((fn, l[1], l[2], l[3], l[4]))
+                    break
+
+            namespace['latex_documents'] = new_latex_docs
+
+        # If there is an extra conf.py file, load it
         if os.path.isfile(config_file):
             sys.stdout.write("load additional sphinx-config: %s\n" % config_file)
             config = namespace.copy()
@@ -29,4 +52,6 @@
             del config['__file__']
             namespace.update(config)
         else:
-            sys.stderr.write("WARNING: additional sphinx-config not found: %s\n" % config_file)
+            config = namespace.copy()
+            config['tags'].add("subproject")
+            namespace.update(config)
diff --git a/Documentation/sphinx/maintainers_include.py b/Documentation/sphinx/maintainers_include.py
new file mode 100755
index 0000000..dc8fed4
--- /dev/null
+++ b/Documentation/sphinx/maintainers_include.py
@@ -0,0 +1,197 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: GPL-2.0
+# -*- coding: utf-8; mode: python -*-
+# pylint: disable=R0903, C0330, R0914, R0912, E0401
+
+u"""
+    maintainers-include
+    ~~~~~~~~~~~~~~~~~~~
+
+    Implementation of the ``maintainers-include`` reST-directive.
+
+    :copyright:  Copyright (C) 2019  Kees Cook <keescook@chromium.org>
+    :license:    GPL Version 2, June 1991 see linux/COPYING for details.
+
+    The ``maintainers-include`` reST-directive performs extensive parsing
+    specific to the Linux kernel's standard "MAINTAINERS" file, in an
+    effort to avoid needing to heavily mark up the original plain text.
+"""
+
+import sys
+import re
+import os.path
+
+from docutils import statemachine
+from docutils.utils.error_reporting import ErrorString
+from docutils.parsers.rst import Directive
+from docutils.parsers.rst.directives.misc import Include
+
+__version__  = '1.0'
+
+def setup(app):
+    app.add_directive("maintainers-include", MaintainersInclude)
+    return dict(
+        version = __version__,
+        parallel_read_safe = True,
+        parallel_write_safe = True
+    )
+
+class MaintainersInclude(Include):
+    u"""MaintainersInclude (``maintainers-include``) directive"""
+    required_arguments = 0
+
+    def parse_maintainers(self, path):
+        """Parse all the MAINTAINERS lines into ReST for human-readability"""
+
+        result = list()
+        result.append(".. _maintainers:")
+        result.append("")
+
+        # Poor man's state machine.
+        descriptions = False
+        maintainers = False
+        subsystems = False
+
+        # Field letter to field name mapping.
+        field_letter = None
+        fields = dict()
+
+        prev = None
+        field_prev = ""
+        field_content = ""
+
+        for line in open(path):
+            if sys.version_info.major == 2:
+                line = unicode(line, 'utf-8')
+            # Have we reached the end of the preformatted Descriptions text?
+            if descriptions and line.startswith('Maintainers'):
+                descriptions = False
+                # Ensure a blank line following the last "|"-prefixed line.
+                result.append("")
+
+            # Start subsystem processing? This is to skip processing the text
+            # between the Maintainers heading and the first subsystem name.
+            if maintainers and not subsystems:
+                if re.search('^[A-Z0-9]', line):
+                    subsystems = True
+
+            # Drop needless input whitespace.
+            line = line.rstrip()
+
+            # Linkify all non-wildcard refs to ReST files in Documentation/.
+            pat = '(Documentation/([^\s\?\*]*)\.rst)'
+            m = re.search(pat, line)
+            if m:
+                # maintainers.rst is in a subdirectory, so include "../".
+                line = re.sub(pat, ':doc:`%s <../%s>`' % (m.group(2), m.group(2)), line)
+
+            # Check state machine for output rendering behavior.
+            output = None
+            if descriptions:
+                # Escape the escapes in preformatted text.
+                output = "| %s" % (line.replace("\\", "\\\\"))
+                # Look for and record field letter to field name mappings:
+                #   R: Designated *reviewer*: FullName <address@domain>
+                m = re.search("\s(\S):\s", line)
+                if m:
+                    field_letter = m.group(1)
+                if field_letter and not field_letter in fields:
+                    m = re.search("\*([^\*]+)\*", line)
+                    if m:
+                        fields[field_letter] = m.group(1)
+            elif subsystems:
+                # Skip empty lines: subsystem parser adds them as needed.
+                if len(line) == 0:
+                    continue
+                # Subsystem fields are batched into "field_content"
+                if line[1] != ':':
+                    # Render a subsystem entry as:
+                    #   SUBSYSTEM NAME
+                    #   ~~~~~~~~~~~~~~
+
+                    # Flush pending field content.
+                    output = field_content + "\n\n"
+                    field_content = ""
+
+                    # Collapse whitespace in subsystem name.
+                    heading = re.sub("\s+", " ", line)
+                    output = output + "%s\n%s" % (heading, "~" * len(heading))
+                    field_prev = ""
+                else:
+                    # Render a subsystem field as:
+                    #   :Field: entry
+                    #           entry...
+                    field, details = line.split(':', 1)
+                    details = details.strip()
+
+                    # Mark paths (and regexes) as literal text for improved
+                    # readability and to escape any escapes.
+                    if field in ['F', 'N', 'X', 'K']:
+                        # But only if not already marked :)
+                        if not ':doc:' in details:
+                            details = '``%s``' % (details)
+
+                    # Comma separate email field continuations.
+                    if field == field_prev and field_prev in ['M', 'R', 'L']:
+                        field_content = field_content + ","
+
+                    # Do not repeat field names, so that field entries
+                    # will be collapsed together.
+                    if field != field_prev:
+                        output = field_content + "\n"
+                        field_content = ":%s:" % (fields.get(field, field))
+                    field_content = field_content + "\n\t%s" % (details)
+                    field_prev = field
+            else:
+                output = line
+
+            # Re-split on any added newlines in any above parsing.
+            if output != None:
+                for separated in output.split('\n'):
+                    result.append(separated)
+
+            # Update the state machine when we find heading separators.
+            if line.startswith('----------'):
+                if prev.startswith('Descriptions'):
+                    descriptions = True
+                if prev.startswith('Maintainers'):
+                    maintainers = True
+
+            # Retain previous line for state machine transitions.
+            prev = line
+
+        # Flush pending field contents.
+        if field_content != "":
+            for separated in field_content.split('\n'):
+                result.append(separated)
+
+        output = "\n".join(result)
+        # For debugging the pre-rendered results...
+        #print(output, file=open("/tmp/MAINTAINERS.rst", "w"))
+
+        self.state_machine.insert_input(
+          statemachine.string2lines(output), path)
+
+    def run(self):
+        """Include the MAINTAINERS file as part of this reST file."""
+        if not self.state.document.settings.file_insertion_enabled:
+            raise self.warning('"%s" directive disabled.' % self.name)
+
+        # Walk up source path directories to find Documentation/../
+        path = self.state_machine.document.attributes['source']
+        path = os.path.realpath(path)
+        tail = path
+        while tail != "Documentation" and tail != "":
+            (path, tail) = os.path.split(path)
+
+        # Append "MAINTAINERS"
+        path = os.path.join(path, "MAINTAINERS")
+
+        try:
+            self.state.document.settings.record_dependencies.add(path)
+            lines = self.parse_maintainers(path)
+        except IOError as error:
+            raise self.severe('Problems with "%s" directive path:\n%s.' %
+                      (self.name, ErrorString(error)))
+
+        return []
diff --git a/Documentation/sphinx/parallel-wrapper.sh b/Documentation/sphinx/parallel-wrapper.sh
new file mode 100644
index 0000000..e54c44c
--- /dev/null
+++ b/Documentation/sphinx/parallel-wrapper.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Figure out if we should follow a specific parallelism from the make
+# environment (as exported by scripts/jobserver-exec), or fall back to
+# the "auto" parallelism when "-jN" is not specified at the top-level
+# "make" invocation.
+
+sphinx="$1"
+shift || true
+
+parallel="$PARALLELISM"
+if [ -z "$parallel" ] ; then
+	# If no parallelism is specified at the top-level make, then
+	# fall back to the expected "-jauto" mode that the "htmldocs"
+	# target has had.
+	auto=$(perl -e 'open IN,"'"$sphinx"' --version 2>&1 |";
+			while (<IN>) {
+				if (m/([\d\.]+)/) {
+					print "auto" if ($1 >= "1.7")
+				}
+			}
+			close IN')
+	if [ -n "$auto" ] ; then
+		parallel="$auto"
+	fi
+fi
+# Only if some parallelism has been determined do we add the -jN option.
+if [ -n "$parallel" ] ; then
+	parallel="-j$parallel"
+fi
+
+exec "$sphinx" $parallel "$@"
diff --git a/Documentation/sphinx/parse-headers.pl b/Documentation/sphinx/parse-headers.pl
index c518050..b063f2f 100755
--- a/Documentation/sphinx/parse-headers.pl
+++ b/Documentation/sphinx/parse-headers.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 use strict;
 use Text::Tabs;
 use Getopt::Long;
@@ -110,7 +110,7 @@
 	    ) {
 		my $s = $1;
 
-		$structs{$s} = "struct :c:type:`$s`\\ ";
+		$structs{$s} = "struct $s\\ ";
 		next;
 	}
 }
@@ -393,7 +393,7 @@
 
 Copyright (c) 2016 by Mauro Carvalho Chehab <mchehab+samsung@kernel.org>.
 
-License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>.
+License GPLv2: GNU GPL version 2 <https://gnu.org/licenses/gpl.html>.
 
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.
diff --git a/Documentation/sphinx/requirements.txt b/Documentation/sphinx/requirements.txt
index 742be3e..5030d34 100644
--- a/Documentation/sphinx/requirements.txt
+++ b/Documentation/sphinx/requirements.txt
@@ -1,3 +1,4 @@
-docutils==0.12
-Sphinx==1.4.9
+docutils
+Sphinx==2.4.4
 sphinx_rtd_theme
+six
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 8f0f508..6325bec3 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -56,6 +56,13 @@
   -rst			Output reStructuredText format.
   -none			Do not output documentation, only warnings.
 
+Output format selection modifier (affects only ReST output):
+
+  -sphinx-version	Use the ReST C domain dialect compatible with an
+			specific Sphinx Version.
+			If not specified, kernel-doc will auto-detect using
+			the sphinx-build version found on PATH.
+
 Output selection (mutually exclusive):
   -export		Only output documentation for symbols that have been
 			exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
@@ -66,9 +73,8 @@
   -function NAME	Only output documentation for the given function(s)
 			or DOC: section title(s). All other functions and DOC:
 			sections are ignored. May be specified multiple times.
-  -nofunction NAME	Do NOT output documentation for the given function(s);
-			only output documentation for the other functions and
-			DOC: sections. May be specified multiple times.
+  -nosymbol NAME	Exclude the specified symbols from the output
+		        documentation. May be specified multiple times.
 
 Output selection modifiers:
   -no-doc-sections	Do not output DOC: sections.
@@ -81,6 +87,7 @@
 Other parameters:
   -v			Verbose output, more warnings and other information.
   -h			Print this help.
+  -Werror		Treat warnings as errors.
 
 EOF
     print $message;
@@ -212,8 +219,10 @@
 my $type_constant = '\b``([^\`]+)``\b';
 my $type_constant2 = '\%([-_\w]+)';
 my $type_func = '(\w+)\(\)';
-my $type_param = '\@(\w*(\.\w+)*(\.\.\.)?)';
+my $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
+my $type_param_ref = '([\!]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
 my $type_fp_param = '\@(\w+)\(\)';  # Special RST handling for func ptr params
+my $type_fp_param2 = '\@(\w+->\S+)\(\)';  # Special RST handling for structs with func ptr params
 my $type_env = '(\$\w+)';
 my $type_enum = '\&(enum\s*([_\w]+))';
 my $type_struct = '\&(struct\s*([_\w]+))';
@@ -236,6 +245,7 @@
                       [$type_typedef, "\\\\fI\$1\\\\fP"],
                       [$type_union, "\\\\fI\$1\\\\fP"],
                       [$type_param, "\\\\fI\$1\\\\fP"],
+                      [$type_param_ref, "\\\\fI\$1\$2\\\\fP"],
                       [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
                       [$type_fallback, "\\\\fI\$1\\\\fP"]
 		     );
@@ -249,14 +259,15 @@
                        [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
                        [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
 		       [$type_fp_param, "**\$1\\\\(\\\\)**"],
-                       [$type_func, "\\:c\\:func\\:`\$1()`"],
+		       [$type_fp_param2, "**\$1\\\\(\\\\)**"],
+                       [$type_func, "\$1()"],
                        [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
                        [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
                        [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"],
                        [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
                        # in rst this can refer to any type
                        [$type_fallback, "\\:c\\:type\\:`\$1`"],
-                       [$type_param, "**\$1**"]
+                       [$type_param_ref, "**\$1\$2**"]
 		      );
 my $blankline_rst = "\n";
 
@@ -266,9 +277,12 @@
 }
 
 my $kernelversion;
+my ($sphinx_major, $sphinx_minor, $sphinx_patch);
+
 my $dohighlight = "";
 
 my $verbose = 0;
+my $Werror = 0;
 my $output_mode = "rst";
 my $output_preformatted = 0;
 my $no_doc_sections = 0;
@@ -280,12 +294,11 @@
 use constant {
     OUTPUT_ALL          => 0, # output all symbols and doc sections
     OUTPUT_INCLUDE      => 1, # output only specified symbols
-    OUTPUT_EXCLUDE      => 2, # output everything except specified symbols
-    OUTPUT_EXPORTED     => 3, # output exported symbols
-    OUTPUT_INTERNAL     => 4, # output non-exported symbols
+    OUTPUT_EXPORTED     => 2, # output exported symbols
+    OUTPUT_INTERNAL     => 3, # output non-exported symbols
 };
 my $output_selection = OUTPUT_ALL;
-my $show_not_found = 0;
+my $show_not_found = 0;	# No longer used
 
 my @export_file_list;
 
@@ -307,6 +320,7 @@
 # CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
 # could cause "use of undefined value" or other bugs.
 my ($function, %function_table, %parametertypes, $declaration_purpose);
+my %nosymbol_table = ();
 my $declaration_start_line;
 my ($type, $declaration_name, $return_type);
 my ($newsection, $newcontents, $prototype, $brcount, %source_map);
@@ -315,9 +329,21 @@
 	$verbose = "$ENV{'KBUILD_VERBOSE'}";
 }
 
+if (defined($ENV{'KDOC_WERROR'})) {
+	$Werror = "$ENV{'KDOC_WERROR'}";
+}
+
+if (defined($ENV{'KCFLAGS'})) {
+	my $kcflags = "$ENV{'KCFLAGS'}";
+
+	if ($kcflags =~ /Werror/) {
+		$Werror = 1;
+	}
+}
+
 # Generated docbook code is inserted in a template at a point where
 # docbook v3.1 requires a non-zero sequence of RefEntry's; see:
-# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
+# https://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
 # We keep track of number of generated entries and generate a dummy
 # if needs be to ensure the expanded template can be postprocessed
 # into html.
@@ -327,13 +353,14 @@
 
 # Parser states
 use constant {
-    STATE_NORMAL        => 0, # normal code
-    STATE_NAME          => 1, # looking for function name
-    STATE_BODY_MAYBE    => 2, # body - or maybe more description
-    STATE_BODY          => 3, # the body of the comment
-    STATE_PROTO         => 4, # scanning prototype
-    STATE_DOCBLOCK      => 5, # documentation block
-    STATE_INLINE        => 6, # gathering documentation outside main block
+    STATE_NORMAL        => 0,        # normal code
+    STATE_NAME          => 1,        # looking for function name
+    STATE_BODY_MAYBE    => 2,        # body - or maybe more description
+    STATE_BODY          => 3,        # the body of the comment
+    STATE_BODY_WITH_BLANK_LINE => 4, # the body, which has a blank line
+    STATE_PROTO         => 5,        # scanning prototype
+    STATE_DOCBLOCK      => 6,        # documentation block
+    STATE_INLINE        => 7,        # gathering doc outside main block
 };
 my $state;
 my $in_doc_sect;
@@ -361,7 +388,7 @@
 my $doc_com_body = '\s*\* ?';
 my $doc_decl = $doc_com . '(\w+)';
 # @params and a strictly limited set of supported section names
-my $doc_sect = $doc_com . 
+my $doc_sect = $doc_com .
     '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)';
 my $doc_content = $doc_com_body . '(.*)';
 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
@@ -413,10 +440,9 @@
 	$output_selection = OUTPUT_INCLUDE;
 	$function = shift @ARGV;
 	$function_table{$function} = 1;
-    } elsif ($cmd eq "nofunction") { # output all except specific functions
-	$output_selection = OUTPUT_EXCLUDE;
-	$function = shift @ARGV;
-	$function_table{$function} = 1;
+    } elsif ($cmd eq "nosymbol") { # Exclude specific symbols
+	my $symbol = shift @ARGV;
+	$nosymbol_table{$symbol} = 1;
     } elsif ($cmd eq "export") { # only exported symbols
 	$output_selection = OUTPUT_EXPORTED;
 	%function_table = ();
@@ -428,6 +454,8 @@
 	push(@export_file_list, $file);
     } elsif ($cmd eq "v") {
 	$verbose = 1;
+    } elsif ($cmd eq "Werror") {
+	$Werror = 1;
     } elsif (($cmd eq "h") || ($cmd eq "help")) {
 	usage();
     } elsif ($cmd eq 'no-doc-sections') {
@@ -435,7 +463,24 @@
     } elsif ($cmd eq 'enable-lineno') {
 	    $enable_lineno = 1;
     } elsif ($cmd eq 'show-not-found') {
-	$show_not_found = 1;
+	$show_not_found = 1;  # A no-op but don't fail
+    } elsif ($cmd eq "sphinx-version") {
+	my $ver_string = shift @ARGV;
+	if ($ver_string =~ m/^(\d+)(\.\d+)?(\.\d+)?/) {
+	    $sphinx_major = $1;
+	    if (defined($2)) {
+		$sphinx_minor = substr($2,1);
+	    } else {
+		$sphinx_minor = 0;
+	    }
+	    if (defined($3)) {
+		$sphinx_patch = substr($3,1)
+	    } else {
+		$sphinx_patch = 0;
+	    }
+	} else {
+	    die "Sphinx version should either major.minor or major.minor.patch format\n";
+	}
     } else {
 	# Unknown argument
         usage();
@@ -444,6 +489,51 @@
 
 # continue execution near EOF;
 
+# The C domain dialect changed on Sphinx 3. So, we need to check the
+# version in order to produce the right tags.
+sub findprog($)
+{
+	foreach(split(/:/, $ENV{PATH})) {
+		return "$_/$_[0]" if(-x "$_/$_[0]");
+	}
+}
+
+sub get_sphinx_version()
+{
+	my $ver;
+
+	my $cmd = "sphinx-build";
+	if (!findprog($cmd)) {
+		my $cmd = "sphinx-build3";
+		if (!findprog($cmd)) {
+			$sphinx_major = 1;
+			$sphinx_minor = 2;
+			$sphinx_patch = 0;
+			printf STDERR "Warning: Sphinx version not found. Using default (Sphinx version %d.%d.%d)\n",
+			       $sphinx_major, $sphinx_minor, $sphinx_patch;
+			return;
+		}
+	}
+
+	open IN, "$cmd --version 2>&1 |";
+	while (<IN>) {
+		if (m/^\s*sphinx-build\s+([\d]+)\.([\d\.]+)(\+\/[\da-f]+)?$/) {
+			$sphinx_major = $1;
+			$sphinx_minor = $2;
+			$sphinx_patch = $3;
+			last;
+		}
+		# Sphinx 1.2.x uses a different format
+		if (m/^\s*Sphinx.*\s+([\d]+)\.([\d\.]+)$/) {
+			$sphinx_major = $1;
+			$sphinx_minor = $2;
+			$sphinx_patch = $3;
+			last;
+		}
+	}
+	close IN;
+}
+
 # get kernel version from env
 sub get_kernel_version() {
     my $version = 'unknown kernel version';
@@ -510,11 +600,11 @@
         return;
     }
 
+    return if (defined($nosymbol_table{$name}));
+
     if (($output_selection == OUTPUT_ALL) ||
-	($output_selection == OUTPUT_INCLUDE &&
-	 defined($function_table{$name})) ||
-	($output_selection == OUTPUT_EXCLUDE &&
-	 !defined($function_table{$name})))
+	(($output_selection == OUTPUT_INCLUDE) &&
+	 defined($function_table{$name})))
     {
 	dump_section($file, $name, $contents);
 	output_blockhead({'sectionlist' => \@sectionlist,
@@ -597,10 +687,10 @@
 	$type = $args{'parametertypes'}{$parameter};
 	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 	    # pointer-to-function
-	    print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
+	    print ".BI \"" . $parenth . $1 . "\" " . " \") (" . $2 . ")" . $post . "\"\n";
 	} else {
 	    $type =~ s/([^\*])$/$1 /;
-	    print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
+	    print ".BI \"" . $parenth . $type . "\" " . " \"" . $post . "\"\n";
 	}
 	$count++;
 	$parenth = "";
@@ -740,6 +830,8 @@
     my ($parameter, $section);
 
     foreach $section (@{$args{'sectionlist'}}) {
+	next if (defined($nosymbol_table{$section}));
+
 	if ($output_selection != OUTPUT_INCLUDE) {
 	    print "**$section**\n\n";
 	}
@@ -751,7 +843,7 @@
 
 #
 # Apply the RST highlights to a sub-block of text.
-#   
+#
 sub highlight_block($) {
     # The dohighlight kludge requires the text be called $contents
     my $contents = shift;
@@ -825,16 +917,37 @@
     my ($parameter, $section);
     my $oldprefix = $lineprefix;
     my $start = "";
+    my $is_macro = 0;
 
-    if ($args{'typedef'}) {
-	print ".. c:type:: ". $args{'function'} . "\n\n";
-	print_lineno($declaration_start_line);
-	print "   **Typedef**: ";
-	$lineprefix = "";
-	output_highlight_rst($args{'purpose'});
-	$start = "\n\n**Syntax**\n\n  ``";
+    if ($sphinx_major < 3) {
+	if ($args{'typedef'}) {
+	    print ".. c:type:: ". $args{'function'} . "\n\n";
+	    print_lineno($declaration_start_line);
+	    print "   **Typedef**: ";
+	    $lineprefix = "";
+	    output_highlight_rst($args{'purpose'});
+	    $start = "\n\n**Syntax**\n\n  ``";
+	    $is_macro = 1;
+	} else {
+	    print ".. c:function:: ";
+	}
     } else {
-	print ".. c:function:: ";
+	if ($args{'typedef'} || $args{'functiontype'} eq "") {
+	    $is_macro = 1;
+	    print ".. c:macro:: ". $args{'function'} . "\n\n";
+	} else {
+	    print ".. c:function:: ";
+	}
+
+	if ($args{'typedef'}) {
+	    print_lineno($declaration_start_line);
+	    print "   **Typedef**: ";
+	    $lineprefix = "";
+	    output_highlight_rst($args{'purpose'});
+	    $start = "\n\n**Syntax**\n\n  ``";
+	} else {
+	    print "``" if ($is_macro);
+	}
     }
     if ($args{'functiontype'} ne "") {
 	$start .= $args{'functiontype'} . " " . $args{'function'} . " (";
@@ -853,15 +966,17 @@
 
 	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
 	    # pointer-to-function
-	    print $1 . $parameter . ") (" . $2;
+	    print $1 . $parameter . ") (" . $2 . ")";
 	} else {
-	    print $type . " " . $parameter;
+	    print $type;
 	}
     }
-    if ($args{'typedef'}) {
-	print ");``\n\n";
+    if ($is_macro) {
+	print ")``\n\n";
     } else {
 	print ")\n\n";
+    }
+    if (!$args{'typedef'}) {
 	print_lineno($declaration_start_line);
 	$lineprefix = "   ";
 	output_highlight_rst($args{'purpose'});
@@ -876,7 +991,7 @@
 	$type = $args{'parametertypes'}{$parameter};
 
 	if ($type ne "") {
-	    print "``$type $parameter``\n";
+	    print "``$type``\n";
 	} else {
 	    print "``$parameter``\n";
 	}
@@ -917,9 +1032,14 @@
     my ($parameter);
     my $oldprefix = $lineprefix;
     my $count;
-    my $name = "enum " . $args{'enum'};
 
-    print "\n\n.. c:type:: " . $name . "\n\n";
+    if ($sphinx_major < 3) {
+	my $name = "enum " . $args{'enum'};
+	print "\n\n.. c:type:: " . $name . "\n\n";
+    } else {
+	my $name = $args{'enum'};
+	print "\n\n.. c:enum:: " . $name . "\n\n";
+    }
     print_lineno($declaration_start_line);
     $lineprefix = "   ";
     output_highlight_rst($args{'purpose'});
@@ -945,8 +1065,13 @@
     my %args = %{$_[0]};
     my ($parameter);
     my $oldprefix = $lineprefix;
-    my $name = "typedef " . $args{'typedef'};
+    my $name;
 
+    if ($sphinx_major < 3) {
+	$name = "typedef " . $args{'typedef'};
+    } else {
+	$name = $args{'typedef'};
+    }
     print "\n\n.. c:type:: " . $name . "\n\n";
     print_lineno($declaration_start_line);
     $lineprefix = "   ";
@@ -961,9 +1086,18 @@
     my %args = %{$_[0]};
     my ($parameter);
     my $oldprefix = $lineprefix;
-    my $name = $args{'type'} . " " . $args{'struct'};
 
-    print "\n\n.. c:type:: " . $name . "\n\n";
+    if ($sphinx_major < 3) {
+	my $name = $args{'type'} . " " . $args{'struct'};
+	print "\n\n.. c:type:: " . $name . "\n\n";
+    } else {
+	my $name = $args{'struct'};
+	if ($args{'type'} eq 'union') {
+	    print "\n\n.. c:union:: " . $name . "\n\n";
+	} else {
+	    print "\n\n.. c:struct:: " . $name . "\n\n";
+	}
+    }
     print_lineno($declaration_start_line);
     $lineprefix = "   ";
     output_highlight_rst($args{'purpose'});
@@ -1022,12 +1156,14 @@
     my $name = shift;
     my $functype = shift;
     my $func = "output_${functype}_$output_mode";
+
+    return if (defined($nosymbol_table{$name}));
+
     if (($output_selection == OUTPUT_ALL) ||
 	(($output_selection == OUTPUT_INCLUDE ||
 	  $output_selection == OUTPUT_EXPORTED) &&
 	 defined($function_table{$name})) ||
-	(($output_selection == OUTPUT_EXCLUDE ||
-	  $output_selection == OUTPUT_INTERNAL) &&
+	($output_selection == OUTPUT_INTERNAL &&
 	 !($functype eq "function" && defined($function_table{$name}))))
     {
 	&$func(@_);
@@ -1062,7 +1198,7 @@
     my $x = shift;
     my $file = shift;
 
-    if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}/) {
+    if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
 	my $decl_type = $1;
 	$declaration_name = $2;
 	my $members = $3;
@@ -1073,10 +1209,15 @@
 	# strip comments:
 	$members =~ s/\/\*.*?\*\///gos;
 	# strip attributes
-	$members =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
-	$members =~ s/__aligned\s*\([^;]*\)//gos;
-	$members =~ s/\s*CRYPTO_MINALIGN_ATTR//gos;
+	$members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
+	$members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
+	$members =~ s/\s*__packed\s*/ /gos;
+	$members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
+	$members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
+	$members =~ s/\s*____cacheline_aligned/ /gos;
+
 	# replace DECLARE_BITMAP
+	$members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos;
 	$members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
 	# replace DECLARE_HASHTABLE
 	$members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
@@ -1203,6 +1344,8 @@
 	my $functype = shift;
 	my $name = shift;
 
+	return 0 if (defined($nosymbol_table{$name}));
+
 	return 1 if ($output_selection == OUTPUT_ALL);
 
 	if ($output_selection == OUTPUT_EXPORTED) {
@@ -1226,27 +1369,28 @@
 			return 0;
 		}
 	}
-	if ($output_selection == OUTPUT_EXCLUDE) {
-		if (!defined($function_table{$name})) {
-			return 1;
-		} else {
-			return 0;
-		}
-	}
 	die("Please add the new output type at show_warnings()");
 }
 
 sub dump_enum($$) {
     my $x = shift;
     my $file = shift;
+    my $members;
+
 
     $x =~ s@/\*.*?\*/@@gos;	# strip comments.
     # strip #define macros inside enums
     $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
 
-    if ($x =~ /enum\s+(\w+)\s*\{(.*)\}/) {
+    if ($x =~ /typedef\s+enum\s*\{(.*)\}\s*(\w*)\s*;/) {
+	$declaration_name = $2;
+	$members = $1;
+    } elsif ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
 	$declaration_name = $1;
-	my $members = $2;
+	$members = $2;
+    }
+
+    if ($members) {
 	my %_members;
 
 	$members =~ s/\s+$//;
@@ -1281,27 +1425,31 @@
 			    'sections' => \%sections,
 			    'purpose' => $declaration_purpose
 			   });
-    }
-    else {
+    } else {
 	print STDERR "${file}:$.: error: Cannot parse enum!\n";
 	++$errors;
     }
 }
 
+my $typedef_type = qr { ((?:\s+[\w\*]+\b){1,8})\s* }x;
+my $typedef_ident = qr { \*?\s*(\w\S+)\s* }x;
+my $typedef_args = qr { \s*\((.*)\); }x;
+
+my $typedef1 = qr { typedef$typedef_type\($typedef_ident\)$typedef_args }x;
+my $typedef2 = qr { typedef$typedef_type$typedef_ident$typedef_args }x;
+
 sub dump_typedef($$) {
     my $x = shift;
     my $file = shift;
 
     $x =~ s@/\*.*?\*/@@gos;	# strip comments.
 
-    # Parse function prototypes
-    if ($x =~ /typedef\s+(\w+)\s*\(\*\s*(\w\S+)\s*\)\s*\((.*)\);/ ||
-	$x =~ /typedef\s+(\w+)\s*(\w\S+)\s*\s*\((.*)\);/) {
-
-	# Function typedefs
+    # Parse function typedef prototypes
+    if ($x =~ $typedef1 || $x =~ $typedef2) {
 	$return_type = $1;
 	$declaration_name = $2;
 	my $args = $3;
+	$return_type =~ s/^\s+//;
 
 	create_parameterlist($args, ',', $file, $declaration_name);
 
@@ -1377,7 +1525,7 @@
 	    # Treat preprocessor directive as a typeless variable just to fill
 	    # corresponding data structures "correctly". Catch it later in
 	    # output_* subs.
-	    push_parameter($arg, "", $file);
+	    push_parameter($arg, "", "", $file);
 	} elsif ($arg =~ m/\(.+\)\s*\(/) {
 	    # pointer-to-function
 	    $arg =~ tr/#/,/;
@@ -1386,7 +1534,7 @@
 	    $type = $arg;
 	    $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
 	    save_struct_actual($param);
-	    push_parameter($param, $type, $file, $declaration_name);
+	    push_parameter($param, $type, $arg, $file, $declaration_name);
 	} elsif ($arg) {
 	    $arg =~ s/\s*:\s*/:/g;
 	    $arg =~ s/\s*\[/\[/g;
@@ -1411,26 +1559,28 @@
 	    foreach $param (@args) {
 		if ($param =~ m/^(\*+)\s*(.*)/) {
 		    save_struct_actual($2);
-		    push_parameter($2, "$type $1", $file, $declaration_name);
+
+		    push_parameter($2, "$type $1", $arg, $file, $declaration_name);
 		}
 		elsif ($param =~ m/(.*?):(\d+)/) {
 		    if ($type ne "") { # skip unnamed bit-fields
 			save_struct_actual($1);
-			push_parameter($1, "$type:$2", $file, $declaration_name)
+			push_parameter($1, "$type:$2", $arg, $file, $declaration_name)
 		    }
 		}
 		else {
 		    save_struct_actual($param);
-		    push_parameter($param, $type, $file, $declaration_name);
+		    push_parameter($param, $type, $arg, $file, $declaration_name);
 		}
 	    }
 	}
     }
 }
 
-sub push_parameter($$$$) {
+sub push_parameter($$$$$) {
 	my $param = shift;
 	my $type = shift;
+	my $org_arg = shift;
 	my $file = shift;
 	my $declaration_name = shift;
 
@@ -1448,6 +1598,10 @@
 	      # handles unnamed variable parameters
 	      $param = "...";
 	    }
+	    elsif ($param =~ /\w\.\.\.$/) {
+	      # for named variable parameters of the form `x...`, remove the dots
+	      $param =~ s/\.\.\.$//;
+	    }
 	    if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
 		$parameterdescs{$param} = "variable arguments";
 	    }
@@ -1473,7 +1627,7 @@
 	if (!defined $parameterdescs{$param} && $param !~ /^#/) {
 		$parameterdescs{$param} = $undescribed;
 
-	        if (show_warnings($type, $declaration_name)) {
+	        if (show_warnings($type, $declaration_name) && $param !~ /\./) {
 			print STDERR
 			      "${file}:$.: warning: Function parameter or member '$param' not described in '$declaration_name'\n";
 			++$warnings;
@@ -1490,8 +1644,8 @@
 	# "[blah" in a parameter string;
 	###$param =~ s/\s*//g;
 	push @parameterlist, $param;
-	$type =~ s/\s\s+/ /g;
-	$parametertypes{$param} = $type;
+	$org_arg =~ s/\s\s+/ /g;
+	$parametertypes{$param} = $org_arg;
 }
 
 sub check_sections($$$$$) {
@@ -1565,6 +1719,8 @@
     my $file = shift;
     my $noret = 0;
 
+    print_lineno($new_start_line);
+
     $prototype =~ s/^static +//;
     $prototype =~ s/^extern +//;
     $prototype =~ s/^asmlinkage +//;
@@ -1579,6 +1735,7 @@
     $prototype =~ s/__must_check +//;
     $prototype =~ s/__weak +//;
     $prototype =~ s/__sched +//;
+    $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
     my $define = $prototype =~ s/^#\s*define\s+//; #ak added
     $prototype =~ s/__attribute__\s*\(\(
             (?:
@@ -1639,30 +1796,48 @@
 	return;
     }
 
-	my $prms = join " ", @parameterlist;
-	check_sections($file, $declaration_name, "function", $sectcheck, $prms);
+    my $prms = join " ", @parameterlist;
+    check_sections($file, $declaration_name, "function", $sectcheck, $prms);
 
-        # This check emits a lot of warnings at the moment, because many
-        # functions don't have a 'Return' doc section. So until the number
-        # of warnings goes sufficiently down, the check is only performed in
-        # verbose mode.
-        # TODO: always perform the check.
-        if ($verbose && !$noret) {
-                check_return_section($file, $declaration_name, $return_type);
-        }
+    # This check emits a lot of warnings at the moment, because many
+    # functions don't have a 'Return' doc section. So until the number
+    # of warnings goes sufficiently down, the check is only performed in
+    # verbose mode.
+    # TODO: always perform the check.
+    if ($verbose && !$noret) {
+	    check_return_section($file, $declaration_name, $return_type);
+    }
 
-    output_declaration($declaration_name,
-		       'function',
-		       {'function' => $declaration_name,
-			'module' => $modulename,
-			'functiontype' => $return_type,
-			'parameterlist' => \@parameterlist,
-			'parameterdescs' => \%parameterdescs,
-			'parametertypes' => \%parametertypes,
-			'sectionlist' => \@sectionlist,
-			'sections' => \%sections,
-			'purpose' => $declaration_purpose
-		       });
+    # The function parser can be called with a typedef parameter.
+    # Handle it.
+    if ($return_type =~ /typedef/) {
+	output_declaration($declaration_name,
+			   'function',
+			   {'function' => $declaration_name,
+			    'typedef' => 1,
+			    'module' => $modulename,
+			    'functiontype' => $return_type,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    } else {
+	output_declaration($declaration_name,
+			   'function',
+			   {'function' => $declaration_name,
+			    'module' => $modulename,
+			    'functiontype' => $return_type,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    }
 }
 
 sub reset_state {
@@ -1757,6 +1932,11 @@
 	$prototype =~ s@/\*.*?\*/@@gos;	# strip comments.
 	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
 	$prototype =~ s@^\s+@@gos; # strip leading spaces
+
+	 # Handle prototypes for function pointers like:
+	 # int (*pcs_config)(struct foo)
+	$prototype =~ s@^(\S+\s+)\(\s*\*(\S+)\)@$1$2@gos;
+
 	if ($prototype =~ /SYSCALL_DEFINE/) {
 		syscall_munge();
 	}
@@ -1835,6 +2015,7 @@
 
     while (<IN>) {
 	if (/$export_symbol/) {
+	    next if (defined($nosymbol_table{$2}));
 	    $function_table{$2} = 1;
 	}
     }
@@ -1866,7 +2047,7 @@
     if (/$doc_block/o) {
 	$state = STATE_DOCBLOCK;
 	$contents = "";
-	$new_start_line = $. + 1;
+	$new_start_line = $.;
 
 	if ( $1 eq "" ) {
 	    $section = $section_intro;
@@ -1904,13 +2085,13 @@
 	    ++$warnings;
 	}
 
-	if ($identifier =~ m/^struct/) {
+	if ($identifier =~ m/^struct\b/) {
 	    $decl_type = 'struct';
-	} elsif ($identifier =~ m/^union/) {
+	} elsif ($identifier =~ m/^union\b/) {
 	    $decl_type = 'union';
-	} elsif ($identifier =~ m/^enum/) {
+	} elsif ($identifier =~ m/^enum\b/) {
 	    $decl_type = 'enum';
-	} elsif ($identifier =~ m/^typedef/) {
+	} elsif ($identifier =~ m/^typedef\b/) {
 	    $decl_type = 'typedef';
 	} else {
 	    $decl_type = 'function';
@@ -1934,6 +2115,25 @@
 sub process_body($$) {
     my $file = shift;
 
+    # Until all named variable macro parameters are
+    # documented using the bare name (`x`) rather than with
+    # dots (`x...`), strip the dots:
+    if ($section =~ /\w\.\.\.$/) {
+	$section =~ s/\.\.\.$//;
+
+	if ($verbose) {
+	    print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n";
+	    ++$warnings;
+	}
+    }
+
+    if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
+	dump_section($file, $section, $contents);
+	$section = $section_default;
+	$new_start_line = $.;
+	$contents = "";
+    }
+
     if (/$doc_sect/i) { # case insensitive for supported section names
 	$newsection = $1;
 	$newcontents = $2;
@@ -1986,19 +2186,23 @@
 	$prototype = "";
 	$state = STATE_PROTO;
 	$brcount = 0;
+        $new_start_line = $. + 1;
     } elsif (/$doc_content/) {
-	# miguel-style comment kludge, look for blank lines after
-	# @parameter line to signify start of description
 	if ($1 eq "") {
-	    if ($section =~ m/^@/ || $section eq $section_context) {
+	    if ($section eq $section_context) {
 		dump_section($file, $section, $contents);
 		$section = $section_default;
 		$contents = "";
 		$new_start_line = $.;
+		$state = STATE_BODY;
 	    } else {
+		if ($section ne $section_default) {
+		    $state = STATE_BODY_WITH_BLANK_LINE;
+		} else {
+		    $state = STATE_BODY;
+		}
 		$contents .= "\n";
 	    }
-	    $state = STATE_BODY;
 	} elsif ($state == STATE_BODY_MAYBE) {
 	    # Continued declaration purpose
 	    chomp($declaration_purpose);
@@ -2130,7 +2334,7 @@
 
     $file = map_filename($orig_file);
 
-    if (!open(IN,"<$file")) {
+    if (!open(IN_FILE,"<$file")) {
 	print STDERR "Error: Cannot open file $file\n";
 	++$errors;
 	return;
@@ -2139,9 +2343,9 @@
     $. = 1;
 
     $section_counter = 0;
-    while (<IN>) {
+    while (<IN_FILE>) {
 	while (s/\\\s*$//) {
-	    $_ .= <IN>;
+	    $_ .= <IN_FILE>;
 	}
 	# Replace tabs by spaces
         while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
@@ -2150,7 +2354,8 @@
 	    process_normal();
 	} elsif ($state == STATE_NAME) {
 	    process_name($file, $_);
-	} elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE) {
+	} elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE ||
+		 $state == STATE_BODY_WITH_BLANK_LINE) {
 	    process_body($file, $_);
 	} elsif ($state == STATE_INLINE) { # scanning for inline parameters
 	    process_inline($file, $_);
@@ -2162,17 +2367,24 @@
     }
 
     # Make sure we got something interesting.
-    if ($initial_section_counter == $section_counter) {
-	if ($output_mode ne "none") {
+    if ($initial_section_counter == $section_counter && $
+	output_mode ne "none") {
+	if ($output_selection == OUTPUT_INCLUDE) {
+	    print STDERR "${file}:1: warning: '$_' not found\n"
+		for keys %function_table;
+	}
+	else {
 	    print STDERR "${file}:1: warning: no structured comments found\n";
 	}
-	if (($output_selection == OUTPUT_INCLUDE) && ($show_not_found == 1)) {
-	    print STDERR "    Was looking for '$_'.\n" for keys %function_table;
-	}
     }
+    close IN_FILE;
 }
 
 
+if ($output_mode eq "rst") {
+	get_sphinx_version() if (!$sphinx_major);
+}
+
 $kernelversion = get_kernel_version();
 
 # generate a sequence of code that will splice in highlighting information
@@ -2219,4 +2431,9 @@
   print STDERR "$warnings warnings\n";
 }
 
-exit($output_mode eq "none" ? 0 : $errors);
+if ($Werror && $warnings) {
+    print STDERR "$warnings warnings as Errors\n";
+    exit($warnings);
+} else {
+    exit($output_mode eq "none" ? 0 : $errors)
+}