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+.. _kernel_docs:
+
+Index of Further Kernel Documentation
+=====================================
+
+Initial Author: Juan-Mariano de Goyeneche (<jmseyas@dit.upm.es>;
+email address is defunct now.)
+
+The need for a document like this one became apparent in the
+linux-kernel mailing list as the same questions, asking for pointers
+to information, appeared again and again.
+
+Fortunately, as more and more people get to GNU/Linux, more and more
+get interested in the Kernel. But reading the sources is not always
+enough. It is easy to understand the code, but miss the concepts, the
+philosophy and design decisions behind this code.
+
+Unfortunately, not many documents are available for beginners to
+start. And, even if they exist, there was no "well-known" place which
+kept track of them. These lines try to cover this lack.
+
+PLEASE, if you know any paper not listed here or write a new document,
+include a reference to it here, following the kernel's patch submission
+process. Any corrections, ideas or comments are also welcome.
+
+All documents are cataloged with the following fields: the document's
+"Title", the "Author"/s, the "URL" where they can be found, some
+"Keywords" helpful when searching for specific topics, and a brief
+"Description" of the Document.
+
+.. note::
+
+   The documents on each section of this document are ordered by its
+   published date, from the newest to the oldest.
+
+Docs at the Linux Kernel tree
+-----------------------------
+
+The Sphinx books should be built with ``make {htmldocs | pdfdocs | epubdocs}``.
+
+    * Name: **linux/Documentation**
+
+      :Author: Many.
+      :Location: Documentation/
+      :Keywords: text files, Sphinx.
+      :Description: Documentation that comes with the kernel sources,
+        inside the Documentation directory. Some pages from this document
+        (including this document itself) have been moved there, and might
+        be more up to date than the web version.
+
+On-line docs
+------------
+
+    * Title: **Linux Kernel Mailing List Glossary**
+
+      :Author: various
+      :URL: https://kernelnewbies.org/KernelGlossary
+      :Date: rolling version
+      :Keywords: glossary, terms, linux-kernel.
+      :Description: From the introduction: "This glossary is intended as
+        a brief description of some of the acronyms and terms you may hear
+        during discussion of the Linux kernel".
+
+    * Title: **Tracing the Way of Data in a TCP Connection through the Linux Kernel**
+
+      :Author: Richard Sailer
+      :URL: https://archive.org/details/linux_kernel_data_flow_short_paper
+      :Date: 2016
+      :Keywords: Linux Kernel Networking, TCP, tracing, ftrace
+      :Description: A seminar paper explaining ftrace and how to use it for
+        understanding linux kernel internals,
+        illustrated at tracing the way of a TCP packet through the kernel.
+      :Abstract: *This short paper outlines the usage of ftrace a tracing framework
+        as a tool to understand a running Linux system.
+        Having obtained a trace-log a kernel hacker can read and understand
+        source code more determined and with context.
+        In a detailed example this approach is demonstrated in tracing
+        and the way of data in a TCP Connection through the kernel.
+        Finally this trace-log is used as base for more a exact conceptual
+        exploration and description of the Linux TCP/IP implementation.*
+
+    * Title: **The Linux Kernel Module Programming Guide**
+
+      :Author: Peter Jay Salzman, Michael Burian, Ori Pomerantz, Bob Mottram,
+        Jim Huang.
+      :URL: https://sysprog21.github.io/lkmpg/
+      :Date: 2021
+      :Keywords: modules, GPL book, /proc, ioctls, system calls,
+        interrupt handlers .
+      :Description: A very nice GPL book on the topic of modules
+        programming. Lots of examples. Currently the new version is being
+        actively maintained at https://github.com/sysprog21/lkmpg.
+
+    * Title: **On submitting kernel Patches**
+
+      :Author: Andi Kleen
+      :URL: http://halobates.de/on-submitting-kernel-patches.pdf
+      :Date: 2008
+      :Keywords: patches, review process, types of submissions, basic rules, case studies
+      :Description: This paper gives several experience values on what types of patches
+        there are and how likely they get merged.
+      :Abstract:
+        [...]. This paper examines some common problems for
+        submitting larger changes and some strategies to avoid problems.
+
+    * Title: **Linux Device Drivers, Third Edition**
+
+      :Author: Jonathan Corbet, Alessandro Rubini, Greg Kroah-Hartman
+      :URL: https://lwn.net/Kernel/LDD3/
+      :Date: 2005
+      :Description: A 600-page book covering the (2.6.10) driver
+        programming API and kernel hacking in general.  Available under the
+        Creative Commons Attribution-ShareAlike 2.0 license.
+      :note: You can also :ref:`purchase a copy from O'Reilly or elsewhere  <ldd3_published>`.
+
+    * Title: **Writing an ALSA Driver**
+
+      :Author: Takashi Iwai <tiwai@suse.de>
+      :URL: https://www.kernel.org/doc/html/latest/sound/kernel-api/writing-an-alsa-driver.html
+      :Date: 2005
+      :Keywords: ALSA, sound, soundcard, driver, lowlevel, hardware.
+      :Description: Advanced Linux Sound Architecture for developers,
+        both at kernel and user-level sides. ALSA is the Linux kernel
+        sound architecture in the 2.6 kernel version.
+
+    * Title: **Linux PCMCIA Programmer's Guide**
+
+      :Author: David Hinds.
+      :URL: http://pcmcia-cs.sourceforge.net/ftp/doc/PCMCIA-PROG.html
+      :Date: 2003
+      :Keywords: PCMCIA.
+      :Description: "This document describes how to write kernel device
+        drivers for the Linux PCMCIA Card Services interface. It also
+        describes how to write user-mode utilities for communicating with
+        Card Services.
+
+    * Title: **How NOT to write kernel drivers**
+
+      :Author: Arjan van de Ven.
+      :URL: https://landley.net/kdocs/ols/2002/ols2002-pages-545-555.pdf
+      :Date: 2002
+      :Keywords: driver.
+      :Description: Programming bugs and Do-nots in kernel driver development
+      :Abstract: *Quit a few tutorials, articles and books give an introduction
+        on how to write Linux kernel drivers. Unfortunately the things one
+        should NOT do in Linux kernel code is either only a minor appendix
+        or, more commonly, completely absent. This paper tries to briefly touch
+        the areas in which the most common and serious bugs and do-nots are
+        encountered.*
+
+    * Title: **Global spinlock list and usage**
+
+      :Author: Rick Lindsley.
+      :URL: http://lse.sourceforge.net/lockhier/global-spin-lock
+      :Date: 2001
+      :Keywords: spinlock.
+      :Description: This is an attempt to document both the existence and
+        usage of the spinlocks in the Linux 2.4.5 kernel. Comprehensive
+        list of spinlocks showing when they are used, which functions
+        access them, how each lock is acquired, under what conditions it
+        is held, whether interrupts can occur or not while it is held...
+
+    * Title: **A Linux vm README**
+
+      :Author: Kanoj Sarcar.
+      :URL: http://kos.enix.org/pub/linux-vmm.html
+      :Date: 2001
+      :Keywords: virtual memory, mm, pgd, vma, page, page flags, page
+        cache, swap cache, kswapd.
+      :Description: Telegraphic, short descriptions and definitions
+        relating the Linux virtual memory implementation.
+
+    * Title: **Video4linux Drivers, Part 1: Video-Capture Device**
+
+      :Author: Alan Cox.
+      :URL: http://www.linux-mag.com/id/406
+      :Date: 2000
+      :Keywords: video4linux, driver, video capture, capture devices,
+        camera driver.
+      :Description: The title says it all.
+
+    * Title: **Video4linux Drivers, Part 2: Video-capture Devices**
+
+      :Author: Alan Cox.
+      :URL: http://www.linux-mag.com/id/429
+      :Date: 2000
+      :Keywords: video4linux, driver, video capture, capture devices,
+        camera driver, control, query capabilities, capability, facility.
+      :Description: The title says it all.
+
+    * Title: **Linux IP Networking. A Guide to the Implementation and Modification of the Linux Protocol Stack.**
+
+      :Author: Glenn Herrin.
+      :URL: http://www.cs.unh.edu/cnrg/gherrin
+      :Date: 2000
+      :Keywords: network, networking, protocol, IP, UDP, TCP, connection,
+        socket, receiving, transmitting, forwarding, routing, packets,
+        modules, /proc, sk_buff, FIB, tags.
+      :Description: Excellent paper devoted to the Linux IP Networking,
+        explaining anything from the kernel's to the user space
+        configuration tools' code. Very good to get a general overview of
+        the kernel networking implementation and understand all steps
+        packets follow from the time they are received at the network
+        device till they are delivered to applications. The studied kernel
+        code is from 2.2.14 version. Provides code for a working packet
+        dropper example.
+
+    * Title: **How To Make Sure Your Driver Will Work On The Power Macintosh**
+
+      :Author: Paul Mackerras.
+      :URL: http://www.linux-mag.com/id/261
+      :Date: 1999
+      :Keywords: Mac, Power Macintosh, porting, drivers, compatibility.
+      :Description: The title says it all.
+
+    * Title: **An Introduction to SCSI Drivers**
+
+      :Author: Alan Cox.
+      :URL: http://www.linux-mag.com/id/284
+      :Date: 1999
+      :Keywords: SCSI, device, driver.
+      :Description: The title says it all.
+
+    * Title: **Advanced SCSI Drivers And Other Tales**
+
+      :Author: Alan Cox.
+      :URL: http://www.linux-mag.com/id/307
+      :Date: 1999
+      :Keywords: SCSI, device, driver, advanced.
+      :Description: The title says it all.
+
+    * Title: **Writing Linux Mouse Drivers**
+
+      :Author: Alan Cox.
+      :URL: http://www.linux-mag.com/id/330
+      :Date: 1999
+      :Keywords: mouse, driver, gpm.
+      :Description: The title says it all.
+
+    * Title: **More on Mouse Drivers**
+
+      :Author: Alan Cox.
+      :URL: http://www.linux-mag.com/id/356
+      :Date: 1999
+      :Keywords: mouse, driver, gpm, races, asynchronous I/O.
+      :Description: The title still says it all.
+
+    * Title: **Writing Video4linux Radio Driver**
+
+      :Author: Alan Cox.
+      :URL: http://www.linux-mag.com/id/381
+      :Date: 1999
+      :Keywords: video4linux, driver, radio, radio devices.
+      :Description: The title says it all.
+
+    * Title: **I/O Event Handling Under Linux**
+
+      :Author: Richard Gooch.
+      :URL: https://web.mit.edu/~yandros/doc/io-events.html
+      :Date: 1999
+      :Keywords: IO, I/O, select(2), poll(2), FDs, aio_read(2), readiness
+        event queues.
+      :Description: From the Introduction: "I/O Event handling is about
+        how your Operating System allows you to manage a large number of
+        open files (file descriptors in UNIX/POSIX, or FDs) in your
+        application. You want the OS to notify you when FDs become active
+        (have data ready to be read or are ready for writing). Ideally you
+        want a mechanism that is scalable. This means a large number of
+        inactive FDs cost very little in memory and CPU time to manage".
+
+    * Title: **(nearly) Complete Linux Loadable Kernel Modules. The definitive guide for hackers, virus coders and system administrators.**
+
+      :Author: pragmatic/THC.
+      :URL: http://packetstormsecurity.org/docs/hack/LKM_HACKING.html
+      :Date: 1999
+      :Keywords: syscalls, intercept, hide, abuse, symbol table.
+      :Description: Interesting paper on how to abuse the Linux kernel in
+        order to intercept and modify syscalls, make
+        files/directories/processes invisible, become root, hijack ttys,
+        write kernel modules based virus... and solutions for admins to
+        avoid all those abuses.
+      :Notes: For 2.0.x kernels. Gives guidances to port it to 2.2.x
+        kernels.
+
+    * Name: **Linux Virtual File System**
+
+      :Author: Peter J. Braam.
+      :URL: http://www.coda.cs.cmu.edu/doc/talks/linuxvfs/
+      :Date: 1998
+      :Keywords: slides, VFS, inode, superblock, dentry, dcache.
+      :Description: Set of slides, presumably from a presentation on the
+        Linux VFS layer. Covers version 2.1.x, with dentries and the
+        dcache.
+
+    * Title: **The Venus kernel interface**
+
+      :Author: Peter J. Braam.
+      :URL: http://www.coda.cs.cmu.edu/doc/html/kernel-venus-protocol.html
+      :Date: 1998
+      :Keywords: coda, filesystem, venus, cache manager.
+      :Description: "This document describes the communication between
+        Venus and kernel level file system code needed for the operation
+        of the Coda filesystem. This version document is meant to describe
+        the current interface (version 1.0) as well as improvements we
+        envisage".
+
+    * Title: **Design and Implementation of the Second Extended Filesystem**
+
+      :Author: Rémy Card, Theodore Ts'o, Stephen Tweedie.
+      :URL: https://web.mit.edu/tytso/www/linux/ext2intro.html
+      :Date: 1998
+      :Keywords: ext2, linux fs history, inode, directory, link, devices,
+        VFS, physical structure, performance, benchmarks, ext2fs library,
+        ext2fs tools, e2fsck.
+      :Description: Paper written by three of the top ext2 hackers.
+        Covers Linux filesystems history, ext2 motivation, ext2 features,
+        design, physical structure on disk, performance, benchmarks,
+        e2fsck's passes description... A must read!
+      :Notes: This paper was first published in the Proceedings of the
+        First Dutch International Symposium on Linux, ISBN 90-367-0385-9.
+
+    * Title: **The Linux RAID-1, 4, 5 Code**
+
+      :Author: Ingo Molnar, Gadi Oxman and Miguel de Icaza.
+      :URL: http://www.linuxjournal.com/article.php?sid=2391
+      :Date: 1997
+      :Keywords: RAID, MD driver.
+      :Description: Linux Journal Kernel Korner article.
+      :Abstract: *A description of the implementation of the RAID-1,
+        RAID-4 and RAID-5 personalities of the MD device driver in the
+        Linux kernel, providing users with high performance and reliable,
+        secondary-storage capability using software*.
+
+    * Title: **Linux Kernel Hackers' Guide**
+
+      :Author: Michael K. Johnson.
+      :URL: https://www.tldp.org/LDP/khg/HyperNews/get/khg.html
+      :Date: 1997
+      :Keywords: device drivers, files, VFS, kernel interface, character vs
+        block devices, hardware interrupts, scsi, DMA, access to user memory,
+        memory allocation, timers.
+      :Description: A guide designed to help you get up to speed on the
+        concepts that are not intuitively obvious, and to document the internal
+        structures of Linux.
+
+    * Title: **Dynamic Kernels: Modularized Device Drivers**
+
+      :Author: Alessandro Rubini.
+      :URL: http://www.linuxjournal.com/article.php?sid=1219
+      :Date: 1996
+      :Keywords: device driver, module, loading/unloading modules,
+        allocating resources.
+      :Description: Linux Journal Kernel Korner article.
+      :Abstract: *This is the first of a series of four articles
+        co-authored by Alessandro Rubini and Georg Zezchwitz which present
+        a practical approach to writing Linux device drivers as kernel
+        loadable modules. This installment presents an introduction to the
+        topic, preparing the reader to understand next month's
+        installment*.
+
+    * Title: **Dynamic Kernels: Discovery**
+
+      :Author: Alessandro Rubini.
+      :URL: http://www.linuxjournal.com/article.php?sid=1220
+      :Date: 1996
+      :Keywords: character driver, init_module, clean_up module,
+        autodetection, mayor number, minor number, file operations,
+        open(), close().
+      :Description: Linux Journal Kernel Korner article.
+      :Abstract: *This article, the second of four, introduces part of
+        the actual code to create custom module implementing a character
+        device driver. It describes the code for module initialization and
+        cleanup, as well as the open() and close() system calls*.
+
+    * Title: **The Devil's in the Details**
+
+      :Author: Georg v. Zezschwitz and Alessandro Rubini.
+      :URL: http://www.linuxjournal.com/article.php?sid=1221
+      :Date: 1996
+      :Keywords: read(), write(), select(), ioctl(), blocking/non
+        blocking mode, interrupt handler.
+      :Description: Linux Journal Kernel Korner article.
+      :Abstract: *This article, the third of four on writing character
+        device drivers, introduces concepts of reading, writing, and using
+        ioctl-calls*.
+
+    * Title: **Dissecting Interrupts and Browsing DMA**
+
+      :Author: Alessandro Rubini and Georg v. Zezschwitz.
+      :URL: https://www.linuxjournal.com/article.php?sid=1222
+      :Date: 1996
+      :Keywords: interrupts, irqs, DMA, bottom halves, task queues.
+      :Description: Linux Journal Kernel Korner article.
+      :Abstract: *This is the fourth in a series of articles about
+        writing character device drivers as loadable kernel modules. This
+        month, we further investigate the field of interrupt handling.
+        Though it is conceptually simple, practical limitations and
+        constraints make this an ''interesting'' part of device driver
+        writing, and several different facilities have been provided for
+        different situations. We also investigate the complex topic of
+        DMA*.
+
+    * Title: **Device Drivers Concluded**
+
+      :Author: Georg v. Zezschwitz.
+      :URL: https://www.linuxjournal.com/article.php?sid=1287
+      :Date: 1996
+      :Keywords: address spaces, pages, pagination, page management,
+        demand loading, swapping, memory protection, memory mapping, mmap,
+        virtual memory areas (VMAs), vremap, PCI.
+      :Description: Finally, the above turned out into a five articles
+        series. This latest one's introduction reads: "This is the last of
+        five articles about character device drivers. In this final
+        section, Georg deals with memory mapping devices, beginning with
+        an overall description of the Linux memory management concepts".
+
+    * Title: **Network Buffers And Memory Management**
+
+      :Author: Alan Cox.
+      :URL: https://www.linuxjournal.com/article.php?sid=1312
+      :Date: 1996
+      :Keywords: sk_buffs, network devices, protocol/link layer
+        variables, network devices flags, transmit, receive,
+        configuration, multicast.
+      :Description: Linux Journal Kernel Korner.
+      :Abstract: *Writing a network device driver for Linux is fundamentally
+        simple---most of the complexity (other than talking to the
+        hardware) involves managing network packets in memory*.
+
+    * Title: **Analysis of the Ext2fs structure**
+
+      :Author: Louis-Dominique Dubeau.
+      :URL: https://teaching.csse.uwa.edu.au/units/CITS2002/fs-ext2/
+      :Date: 1994
+      :Keywords: ext2, filesystem, ext2fs.
+      :Description: Description of ext2's blocks, directories, inodes,
+        bitmaps, invariants...
+
+Published books
+---------------
+
+    * Title: **Linux Treiber entwickeln**
+
+      :Author: Jürgen Quade, Eva-Katharina Kunst
+      :Publisher: dpunkt.verlag
+      :Date: Oct 2015 (4th edition)
+      :Pages: 688
+      :ISBN: 978-3-86490-288-8
+      :Note: German. The third edition from 2011 is
+         much cheaper and still quite up-to-date.
+
+    * Title: **Linux Kernel Networking: Implementation and Theory**
+
+      :Author: Rami Rosen
+      :Publisher: Apress
+      :Date: December 22, 2013
+      :Pages: 648
+      :ISBN: 978-1430261964
+
+    * Title: **Embedded Linux Primer: A practical Real-World Approach, 2nd Edition**
+
+      :Author: Christopher Hallinan
+      :Publisher: Pearson
+      :Date: November, 2010
+      :Pages: 656
+      :ISBN: 978-0137017836
+
+    * Title: **Linux Kernel Development, 3rd Edition**
+
+      :Author: Robert Love
+      :Publisher: Addison-Wesley
+      :Date: July, 2010
+      :Pages: 440
+      :ISBN: 978-0672329463
+
+    * Title: **Essential Linux Device Drivers**
+
+      :Author: Sreekrishnan Venkateswaran
+      :Published: Prentice Hall
+      :Date: April, 2008
+      :Pages: 744
+      :ISBN: 978-0132396554
+
+.. _ldd3_published:
+
+    * Title: **Linux Device Drivers, 3rd Edition**
+
+      :Authors: Jonathan Corbet, Alessandro Rubini, and Greg Kroah-Hartman
+      :Publisher: O'Reilly & Associates
+      :Date: 2005
+      :Pages: 636
+      :ISBN: 0-596-00590-3
+      :Notes: Further information in
+        http://www.oreilly.com/catalog/linuxdrive3/
+        PDF format, URL: https://lwn.net/Kernel/LDD3/
+
+    * Title: **Linux Kernel Internals**
+
+      :Author: Michael Beck
+      :Publisher: Addison-Wesley
+      :Date: 1997
+      :ISBN: 0-201-33143-8 (second edition)
+
+    * Title: **Programmation Linux 2.0 API systeme et fonctionnement du noyau**
+
+      :Author: Remy Card, Eric Dumas, Franck Mevel
+      :Publisher: Eyrolles
+      :Date: 1997
+      :Pages: 520
+      :ISBN: 2-212-08932-5
+      :Notes: French
+
+    * Title: **The Design and Implementation of the 4.4 BSD UNIX Operating System**
+
+      :Author: Marshall Kirk McKusick, Keith Bostic, Michael J. Karels,
+        John S. Quarterman
+      :Publisher: Addison-Wesley
+      :Date: 1996
+      :ISBN: 0-201-54979-4
+
+    * Title: **Unix internals -- the new frontiers**
+
+      :Author: Uresh Vahalia
+      :Publisher: Prentice Hall
+      :Date: 1996
+      :Pages: 600
+      :ISBN: 0-13-101908-2
+
+    * Title: **Programming for the real world - POSIX.4**
+
+      :Author: Bill O. Gallmeister
+      :Publisher: O'Reilly & Associates, Inc
+      :Date: 1995
+      :Pages: 552
+      :ISBN: I-56592-074-0
+      :Notes: Though not being directly about Linux, Linux aims to be
+        POSIX. Good reference.
+
+    * Title:  **UNIX  Systems  for  Modern Architectures: Symmetric Multiprocessing and Caching for Kernel Programmers**
+
+      :Author: Curt Schimmel
+      :Publisher: Addison Wesley
+      :Date: June, 1994
+      :Pages: 432
+      :ISBN: 0-201-63338-8
+
+    * Title: **The Design and Implementation of the 4.3 BSD UNIX Operating System**
+
+      :Author: Samuel J. Leffler, Marshall Kirk McKusick, Michael J
+        Karels, John S. Quarterman
+      :Publisher: Addison-Wesley
+      :Date: 1989 (reprinted with corrections on October, 1990)
+      :ISBN: 0-201-06196-1
+
+    * Title: **The Design of the UNIX Operating System**
+
+      :Author: Maurice J. Bach
+      :Publisher: Prentice Hall
+      :Date: 1986
+      :Pages: 471
+      :ISBN: 0-13-201757-1
+
+Miscellaneous
+-------------
+
+    * Name: **Cross-Referencing Linux**
+
+      :URL: https://elixir.bootlin.com/
+      :Keywords: Browsing source code.
+      :Description: Another web-based Linux kernel source code browser.
+        Lots of cross references to variables and functions. You can see
+        where they are defined and where they are used.
+
+    * Name: **Linux Weekly News**
+
+      :URL: https://lwn.net
+      :Keywords: latest kernel news.
+      :Description: The title says it all. There's a fixed kernel section
+        summarizing developers' work, bug fixes, new features and versions
+        produced during the week. Published every Thursday.
+
+    * Name: **The home page of Linux-MM**
+
+      :Author: The Linux-MM team.
+      :URL: https://linux-mm.org/
+      :Keywords: memory management, Linux-MM, mm patches, TODO, docs,
+        mailing list.
+      :Description: Site devoted to Linux Memory Management development.
+        Memory related patches, HOWTOs, links, mm developers... Don't miss
+        it if you are interested in memory management development!
+
+    * Name: **Kernel Newbies IRC Channel and Website**
+
+      :URL: https://www.kernelnewbies.org
+      :Keywords: IRC, newbies, channel, asking doubts.
+      :Description: #kernelnewbies on irc.oftc.net.
+        #kernelnewbies is an IRC network dedicated to the 'newbie'
+        kernel hacker. The audience mostly consists of people who are
+        learning about the kernel, working on kernel projects or
+        professional kernel hackers that want to help less seasoned kernel
+        people.
+        #kernelnewbies is on the OFTC IRC Network.
+        Try irc.oftc.net as your server and then /join #kernelnewbies.
+        The kernelnewbies website also hosts articles, documents, FAQs...
+
+    * Name: **linux-kernel mailing list archives and search engines**
+
+      :URL: http://vger.kernel.org/vger-lists.html
+      :URL: http://www.uwsg.indiana.edu/hypermail/linux/kernel/index.html
+      :URL: http://groups.google.com/group/mlist.linux.kernel
+      :Keywords: linux-kernel, archives, search.
+      :Description: Some of the linux-kernel mailing list archivers. If
+        you have a better/another one, please let me know.
+
+-------
+
+Document last updated on Tue 2016-Sep-20
+
+This document is based on:
+ https://www.dit.upm.es/~jmseyas/linux/kernel/hackers-docs.html