A few documentation fixes for 5.17

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Merge tag 'docs-5.17-3' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A few documentation fixes for 5.17"

* tag 'docs-5.17-3' of git://git.lwn.net/linux:
  docs/vm: Fix typo in *harden*
  Documentation: arm: marvell: Extend Avanta list
  docs: fix typo in Documentation/kernel-hacking/locking.rst
  docs: Hook the RTLA documents into the kernel docs build

Documentation/arm/marvell.rst

@@ -266,10 +266,12 @@ Avanta family
 -------------
 
   Flavors:
+       - 88F6500
        - 88F6510
        - 88F6530P
        - 88F6550
        - 88F6560
+       - 88F6601
 
   Homepage:
 	https://web.archive.org/web/20181005145041/http://www.marvell.com/broadband/

Documentation/index.rst

@@ -166,6 +166,7 @@ to ReStructured Text format, or are simply too old.
 .. toctree::
    :maxdepth: 2
 
+   tools/index
    staging/index
    watch_queue
 

Documentation/kernel-hacking/locking.rst

@@ -295,7 +295,7 @@ Pete Zaitcev gives the following summary:
 
 -  If you are in a process context (any syscall) and want to lock other
    process out, use a mutex. You can take a mutex and sleep
-   (``copy_from_user*(`` or ``kmalloc(x,GFP_KERNEL)``).
+   (``copy_from_user()`` or ``kmalloc(x,GFP_KERNEL)``).
 
 -  Otherwise (== data can be touched in an interrupt), use
    spin_lock_irqsave() and

Documentation/tools/index.rst

@@ -0,0 +1,20 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+============
+Kernel tools
+============
+
+This book covers user-space tools that are shipped with the kernel source;
+more additions are needed here:
+
+.. toctree::
+   :maxdepth: 1
+
+   rtla/index
+
+.. only::  subproject and html
+
+   Indices
+   =======
+
+   * :ref:`genindex`

Documentation/tools/rtla/index.rst

@@ -0,0 +1,26 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+================================
+The realtime Linux analysis tool
+================================
+
+RTLA provides a set of tools for the analysis of the kernel's realtime
+behavior on specific hardware.
+
+.. toctree::
+   :maxdepth: 1
+
+   rtla
+   rtla-osnoise
+   rtla-osnoise-hist
+   rtla-osnoise-top
+   rtla-timerlat
+   rtla-timerlat-hist
+   rtla-timerlat-top
+
+.. only::  subproject and html
+
+   Indices
+   =======
+
+   * :ref:`genindex`

Documentation/vm/page_table_check.rst

@@ -9,7 +9,7 @@ Page Table Check
 Introduction
 ============
 
-Page table check allows to hardern the kernel by ensuring that some types of
+Page table check allows to harden the kernel by ensuring that some types of
 the memory corruptions are prevented.
 
 Page table check performs extra verifications at the time when new pages become