poky: subtree update:0ac99625bf..796be0593a

Alexander Kanavin (31):
      netbase: upgrade 6.1 -> 6.2
      meson: upgrade 0.55.1 -> 0.56.0
      vulkan-samples: update to latest revision
      libcap: update 2.44 -> 2.45
      bind: upgrade 9.16.7 -> 9.16.9
      quota: upgrade 4.05 -> 4.06
      pango: upgrade 1.46.2 -> 1.48.0
      elfutils: upgrade 0.181 -> 0.182
      ifupdown: upgrade 0.8.35 -> 0.8.36
      createrepo-c: upgrade 0.16.1 -> 0.16.2
      acpica: upgrade 20200925 -> 20201113
      grep: upgrade 3.5 -> 3.6
      man-pages: upgrade 5.08 -> 5.09
      stress-ng: upgrade 0.11.23 -> 0.11.24
      libhandy: upgrade 1.0.1 -> 1.0.2
      piglit: upgrade to latest revision
      xkbcomp: upgrade 1.4.3 -> 1.4.4
      lz4: upgrade 1.9.2 -> 1.9.3
      bison: upgrade 3.7.3 -> 3.7.4
      python3-setuptools-scm: fix upstream version check
      cantarell-fonts: update 0.0.25 -> 0.201
      meta/lib/oe/reproducible.py: gitsm:// works just as fine as git:// for timestamps
      llvm: fix reproducibility
      ruby: fix reproducibility
      webkitgtk: fix reproducibility
      ffmpeg: fix reproducibility
      piglit: fix reproducibility
      serf: do not install the static library
      llvm: sort the lists in generated source reproducibibly
      kea: fix reproducibility
      poky.conf: do not write current date into distro version, use git hash instead

Andrej Valek (1):
      kernel-dummy: fix executing unexpected tasks

Anuj Mittal (1):
      releases.rst: add gatesgarth to current releases

Brett Warren (1):
      libffi: add patch to revert clang VFP workaround

Chandana kalluri (1):
      populate_sdk_ext: use SDK_CUSTOM_TEPLATECONF variable to enable custom templateconf.cfg

Changqing Li (1):
      buildtools-tarball: add wic dependency into extended buildtools

Diego Sueiro (2):
      modutils-initscripts: Fix modules.dep creation when USE_DEPMOD="0"
      initscripts: Change execution order between checkroot and modutils

Dmitry Baryshkov (2):
      linux-firmware: upgrade 20201022 -> 20201118
      linux-firmware: package ath11k firmware

Fabio Berton (1):
      mesa: Update 20.2.1 -> 20.2.4

Gratian Crisan (1):
      kernel-module-split.bbclass: fix kernel modules getting marked as CONFFILES

Jack Mitchell (3):
      Revert "connman: set service to conflict with systemd-networkd"
      systemd-conf: add PACKAGECONFIG to enable/disable auto ethernet DHCP
      systemd-conf: match ethernet interfaces by type rather than globbing

Joshua Watt (2):
      bitbake: hashserv: client: Fix AF_UNIX path length limits
      bitbake: hashserv: Fix broken AF_UNIX path length limit

Kai Kang (2):
      systemd-systemctl-native: capable to call without argument
      systemd.bbclass: update command to check systemctl available

Kevin Hao (1):
      tune-octeontx2.inc: Add tune for Marvell OCTEON TX2 core

Li Wang (2):
      qemu: CVE-2020-29129 CVE-2020-29130
      qemu: CVE-2020-25624

Luca Boccassi (1):
      dbus: move messagebus user to dbus-common package

Michael Halstead (1):
      releases: conf: add link to 3.1.4, update to include 3.1.4

Nicolas Dechesne (19):
      sphinx: add .vscode in .gitignore
      {dev,kernel,sdk}-manual: replace hardcoded release version with &DISTRO;
      sphinx: replace bitbake labels with references to corresponding title
      brief-yoctoprojectqs: replace labels with references to section title
      dev-manual: replace labels with references to section title
      ref-manual: replace labels with references to section title
      sdk-manual: replace labels with references to section title
      overview-manual: remove unused labels
      dev-manual: remove unused labels
      sphinx: rename top level document in each manual
      sphinx: use absolute paths for :doc: references
      test-manual: remove 'test-manual' from filenames
      toaster-manual: remove 'toaster-manual' from filenames
      dev-manual: remove 'dev-manual' from filenames
      kernel-dev: remove 'kernel-dev' from filenames
      profile-manual: remove 'profile-manual' from filenames
      overview-manual: remove 'overview-manual' from filenames
      sdk-manual: remove 'sdk' from filenames
      ref-manual: remove 'ref' from filenames

Paul Barker (5):
      documentation: Simplify yocto_wiki links
      documentation: Simplify yocto_git links
      ref-manual: Simplify oe_git links
      poky.conf: Add opensuseleap-15.2 and fedora-33 to tested distros
      poky.conf: Drop fedora-30 from tested distros

Peter Kjellerstedt (2):
      pseudo: Simplify pseudo_client_ignore_path_chroot()
      bitbake.conf: Add all layers (from BBLAYERS) to PSEUDO_IGNORE_PATHS

Richard Purdie (8):
      lz4: Use the new branch naming from upstream
      Revert "bitbake.conf: Add all layers (from BBLAYERS) to PSEUDO_IGNORE_PATHS"
      build-appliance-image: Update to master head revision
      bitbake: Revert "fetch2: use relative symlinks for anything pulled from PREMIRRORS"
      build-appliance-image: Update to master head revision
      metadata_scm: Fix signature handling of METADATA_REVISION and METADATA_BRANCH
      poky: Set SDK_VERSION explicitly
      build-appliance-image: Update to master head revision

Ross Burton (9):
      oeqa/devtool: use Yocto mirror for pv-1.5.3 tarball
      image_types: remove obsolete tar comment
      image_types: sort tarball file listings
      package_manager/ipk: neaten OPKGLIBDIR logic
      ldconfig-native: don't write auxiliary cache
      package_manager/ipk: improve remove_packaging_data
      oeqa/selftest/containerimage: update for improved cleanup
      coreutils: add SUSE-specific issues to CVE whitelist
      bitbake: msg: use safe YAML loader

Sinan Kaya (1):
      poky-tiny: enable section removal

Tomasz Dziendzielski (1):
      pseudo: Update to print PSEUDO_LOGFILE in abort message on path mismatches

sangeeta jain (1):
      meta/lib/oeqa/manual/oe-core.json: Update test_bitbake_devshell

zangrc (3):
      libinput: upgrade 1.16.3 -> 1.16.4
      lighttpd: upgrade 1.4.55 -> 1.4.56
      sysstat: upgrade 12.4.0 -> 12.4.1

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I65f2f1c9d44433f3e62609240012c42256679b51

1 files changed, 180 insertions, 0 deletions

diff --git a/poky/documentation/kernel-dev/intro.rst b/poky/documentation/kernel-dev/intro.rst
new file mode 100644
index 000000000..c95d2f7cb
--- /dev/null
+++ b/poky/documentation/kernel-dev/intro.rst
@@ -0,0 +1,180 @@
+.. SPDX-License-Identifier: CC-BY-SA-2.0-UK
+
+************
+Introduction
+************
+
+Overview
+========
+
+Regardless of how you intend to make use of the Yocto Project, chances
+are you will work with the Linux kernel. This manual describes how to
+set up your build host to support kernel development, introduces the
+kernel development process, provides background information on the Yocto
+Linux kernel :term:`Metadata`, describes
+common tasks you can perform using the kernel tools, shows you how to
+use the kernel Metadata needed to work with the kernel inside the Yocto
+Project, and provides insight into how the Yocto Project team develops
+and maintains Yocto Linux kernel Git repositories and Metadata.
+
+Each Yocto Project release has a set of Yocto Linux kernel recipes,
+whose Git repositories you can view in the Yocto
+:yocto_git:`Source Repositories <>` under the "Yocto Linux Kernel"
+heading. New recipes for the release track the latest Linux kernel
+upstream developments from https://www.kernel.org and introduce
+newly-supported platforms. Previous recipes in the release are refreshed
+and supported for at least one additional Yocto Project release. As they
+align, these previous releases are updated to include the latest from
+the Long Term Support Initiative (LTSI) project. You can learn more
+about Yocto Linux kernels and LTSI in the
+":ref:`kernel-dev/concepts-appx:yocto project kernel development and maintenance`" section.
+
+Also included is a Yocto Linux kernel development recipe
+(``linux-yocto-dev.bb``) should you want to work with the very latest in
+upstream Yocto Linux kernel development and kernel Metadata development.
+
+.. note::
+
+   For more on Yocto Linux kernels, see the
+   ":ref:`kernel-dev/concepts-appx:yocto project kernel development and maintenance`"
+   section.
+
+The Yocto Project also provides a powerful set of kernel tools for
+managing Yocto Linux kernel sources and configuration data. You can use
+these tools to make a single configuration change, apply multiple
+patches, or work with your own kernel sources.
+
+In particular, the kernel tools allow you to generate configuration
+fragments that specify only what you must, and nothing more.
+Configuration fragments only need to contain the highest level visible
+``CONFIG`` options as presented by the Yocto Linux kernel ``menuconfig``
+system. Contrast this against a complete Yocto Linux kernel ``.config``
+file, which includes all the automatically selected ``CONFIG`` options.
+This efficiency reduces your maintenance effort and allows you to
+further separate your configuration in ways that make sense for your
+project. A common split separates policy and hardware. For example, all
+your kernels might support the ``proc`` and ``sys`` filesystems, but
+only specific boards require sound, USB, or specific drivers. Specifying
+these configurations individually allows you to aggregate them together
+as needed, but maintains them in only one place. Similar logic applies
+to separating source changes.
+
+If you do not maintain your own kernel sources and need to make only
+minimal changes to the sources, the released recipes provide a vetted
+base upon which to layer your changes. Doing so allows you to benefit
+from the continual kernel integration and testing performed during
+development of the Yocto Project.
+
+If, instead, you have a very specific Linux kernel source tree and are
+unable to align with one of the official Yocto Linux kernel recipes, an
+alternative exists by which you can use the Yocto Project Linux kernel
+tools with your own kernel sources.
+
+The remainder of this manual provides instructions for completing
+specific Linux kernel development tasks. These instructions assume you
+are comfortable working with
+`BitBake <https://openembedded.org/wiki/Bitbake>`__ recipes and basic
+open-source development tools. Understanding these concepts will
+facilitate the process of working with the kernel recipes. If you find
+you need some additional background, please be sure to review and
+understand the following documentation:
+
+-  :doc:`/brief-yoctoprojectqs/index` document.
+
+-  :doc:`/overview-manual/index`.
+
+-  :ref:`devtool
+   workflow <sdk-manual/extensible:using \`\`devtool\`\` in your sdk workflow>`
+   as described in the Yocto Project Application Development and the
+   Extensible Software Development Kit (eSDK) manual.
+
+-  The ":ref:`dev-manual/common-tasks:understanding and creating layers`"
+   section in the Yocto Project Development Tasks Manual.
+
+-  The "`Kernel Modification
+   Workflow <#kernel-modification-workflow>`__" section.
+
+Kernel Modification Workflow
+============================
+
+Kernel modification involves changing the Yocto Project kernel, which
+could involve changing configuration options as well as adding new
+kernel recipes. Configuration changes can be added in the form of
+configuration fragments, while recipe modification comes through the
+kernel's ``recipes-kernel`` area in a kernel layer you create.
+
+This section presents a high-level overview of the Yocto Project kernel
+modification workflow. The illustration and accompanying list provide
+general information and references for further information.
+
+.. image:: figures/kernel-dev-flow.png
+   :align: center
+
+1. *Set up Your Host Development System to Support Development Using the
+   Yocto Project*: See the ":doc:`/dev-manual/start`" section in
+   the Yocto Project Development Tasks Manual for options on how to get
+   a build host ready to use the Yocto Project.
+
+2. *Set Up Your Host Development System for Kernel Development:* It is
+   recommended that you use ``devtool`` and an extensible SDK for kernel
+   development. Alternatively, you can use traditional kernel
+   development methods with the Yocto Project. Either way, there are
+   steps you need to take to get the development environment ready.
+
+   Using ``devtool`` and the eSDK requires that you have a clean build
+   of the image and that you are set up with the appropriate eSDK. For
+   more information, see the
+   ":ref:`kernel-dev/common:getting ready to develop using \`\`devtool\`\``"
+   section.
+
+   Using traditional kernel development requires that you have the
+   kernel source available in an isolated local Git repository. For more
+   information, see the
+   ":ref:`kernel-dev/common:getting ready for traditional kernel development`"
+   section.
+
+3. *Make Changes to the Kernel Source Code if applicable:* Modifying the
+   kernel does not always mean directly changing source files. However,
+   if you have to do this, you make the changes to the files in the
+   eSDK's Build Directory if you are using ``devtool``. For more
+   information, see the
+   ":ref:`kernel-dev/common:using \`\`devtool\`\` to patch the kernel`"
+   section.
+
+   If you are using traditional kernel development, you edit the source
+   files in the kernel's local Git repository. For more information, see the
+   ":ref:`kernel-dev/common:using traditional kernel development to patch the kernel`"
+   section.
+
+4. *Make Kernel Configuration Changes if Applicable:* If your situation
+   calls for changing the kernel's configuration, you can use
+   :ref:`menuconfig <kernel-dev/common:using \`\`menuconfig\`\`>`,
+   which allows you to
+   interactively develop and test the configuration changes you are
+   making to the kernel. Saving changes you make with ``menuconfig``
+   updates the kernel's ``.config`` file.
+
+   .. note::
+
+      Try to resist the temptation to directly edit an existing ``.config``
+      file, which is found in the Build Directory among the source code
+      used for the build. Doing so, can produce unexpected results when
+      the OpenEmbedded build system regenerates the configuration file.
+
+   Once you are satisfied with the configuration changes made using
+   ``menuconfig`` and you have saved them, you can directly compare the
+   resulting ``.config`` file against an existing original and gather
+   those changes into a
+   :ref:`configuration fragment file <kernel-dev/common:creating configuration fragments>` to be
+   referenced from within the kernel's ``.bbappend`` file.
+
+   Additionally, if you are working in a BSP layer and need to modify
+   the BSP's kernel's configuration, you can use ``menuconfig``.
+
+5. *Rebuild the Kernel Image With Your Changes:* Rebuilding the kernel
+   image applies your changes. Depending on your target hardware, you
+   can verify your changes on actual hardware or perhaps QEMU.
+
+The remainder of this developer's guide covers common tasks typically
+used during kernel development, advanced Metadata usage, and Yocto Linux
+kernel maintenance concepts.