documentation/dev-manual: Changes to repo names and kernel example.
To make the kernel example more easily understood, Joshua Lock suggested that the names used for the bare clone of the kernel git repo and the copy of the bare clone be more different. So I have changed the example such that the bare clone repo is named linux-yocto-3.0-1.1.x.git and the copy of the bare clone (or working repo) is named my-linux-yocto-3.0-1.1.x-work. Note that this also implies the use of the linux-yocto_3.0-1.1.x kernel and not the linux-yocto_3.0 kernel. All the changes made here should take care of the example. I did have to introduce a new figure that showed the kernel repos based on the new names used in the example. Also, I had to delete the other from this branch. The examples are now diverging according to (master) work and 1.1.x work. Reported-by: Joshua Lock <joshua.lock@intel.com> (From yocto-docs rev: f4fdef6078fccfc2c72b6e0ad1dfae1f1ecb2aa6) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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</para>
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<para>
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<imagedata fileref="figures/kernel-example-repos.png" width="7in" depth="5in"
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<imagedata fileref="figures/kernel-example-repos-edison.png" width="7in" depth="5in"
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align="center" scale="100" />
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</para>
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<title>Setting Up the Bare Clone and its Copy</title>
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<para>
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This example modifies the <filename>linux-yocto-3.0</filename> kernel.
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This example modifies the <filename>linux-yocto-3.0-1.1.x</filename> kernel.
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Thus, you need to create a bare clone of that kernel and then make a copy of the
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bare clone.
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See the bulleted item
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The bare clone exists for the kernel build tools and simply as the receiving end
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of <filename>git push</filename>
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commands after you make edits and commits inside the copy of the clone.
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The copy (<filename>linux-yocto-3.0</filename> in this example) has to have
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The copy (<filename>my-linux-yocto-3.0-1.1.x-work</filename> in this example) has to have
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a local branch created and checked out for your work.
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This example uses <filename>common-pc-base</filename> as the local branch.
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The following commands create and checkout the branch:
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<literallayout class='monospaced'>
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$ cd ~/linux-yocto-3.0
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$ cd ~/my-linux-yocto-3.0-1.1.x
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$ git checkout -b common-pc-base origin/yocto/standard/common-pc/base
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Branch common-pc-base set up to track remote branch
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yocto/standard/common-pc/base from origin.
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<para>
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The file you change in this example is named <filename>calibrate.c</filename>
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and is located in the <filename>linux-yocto-3.0</filename> Git repository
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and is located in the <filename>my-linux-yocto-3.0-1.1.x-work</filename> Git repository
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(the copy of the bare clone) in <filename>init</filename>.
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This example simply inserts several <filename>printk</filename> statements
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at the beginning of the <filename>calibrate_delay</filename> function.
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<filename>poky-extras/meta-kernel-dev/recipes-kernel/linux</filename>
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directory, you need to identify the location of the
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local source code, which in this example is the bare clone named
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<filename>linux-yocto-3.0.git</filename>.
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<filename>linux-yocto-3.0-1.1.x.git</filename>.
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To do this, set the <filename>KSRC_linux_yocto</filename> variable to point to your
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local <filename>linux-yocto-3.0.git</filename> Git repository by adding the
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local <filename>linux-yocto-3.0-1.1.x.git</filename> Git repository by adding the
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following statement.
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Be sure to substitute your user information in the statement:
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<literallayout class='monospaced'>
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KSRC_linux_yocto ?= /home/scottrif/linux-yocto-3.0.git
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KSRC_linux_yocto ?= /home/scottrif/linux-yocto-3.0-1.1.x.git
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</literallayout></para></listitem>
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<listitem><para><emphasis>Specify the Kernel Machine:</emphasis> Also in the
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<filename>linux-yocto_3.0.bbappend</filename> file, you need to specify
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<para>
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After setting up the environment to run <filename>menuconfig</filename>, you are ready
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to use the tool to interactively change the kernel configuration.
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In this example, we are basing our changes on the <filename>linux-yocto-3.0</filename>
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In this example, we are basing our changes on the <filename>linux-yocto-3.0-1.1.x</filename>
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kernel.
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The Yocto Project build environment recognizes this kernel as
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<filename>linux-yocto</filename>.
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@ -231,8 +231,12 @@
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stable Linux Yocto kernel that is based on the Linux 2.6.34 release.</para></listitem>
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<listitem><para><emphasis><filename>linux-yocto-2.6.37</filename></emphasis> - The
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stable Linux Yocto kernel that is based on the Linux 2.6.37 release.</para></listitem>
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<listitem><para><emphasis><filename>linux-yocto-3.0</filename></emphasis> - The current
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Linux Yocto kernel that is based on the Linux 3.0 release.</para></listitem>
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<listitem><para><emphasis><filename>linux-yocto-3.0</filename></emphasis> - The
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stable Linux Yocto kernel to use with the Yocto Project current (master) development.
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This kernel is based on the Linux 3.0 release.</para></listitem>
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<listitem><para><emphasis><filename>linux-yocto-3.0-1.1.x</filename></emphasis> - The
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stable Linux Yocto kernel to use with the Yocto Project Release 1.1.x.
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This kernel is based on the Linux 3.0 release.</para></listitem>
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<listitem><para><emphasis><filename>linux-yocto-dev</filename></emphasis> - A development
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kernel based on the latest upstream release candidate available.</para></listitem>
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</itemizedlist>
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For simplicity, it is recommended that you create these structures outside of the
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Yocto Project files' Git repository.</para>
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<para>As an example, the following transcript shows how to create the bare clone
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of the <filename>linux-yocto-3.0</filename> kernel and then create a copy of
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of the <filename>linux-yocto-3.0-1.1.x</filename> kernel and then create a copy of
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that clone.
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<note>When you have a local Linux Yocto kernel Git repository, you can
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reference that repository rather than the upstream Git repository as
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part of the <filename>clone</filename> command.
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Doing so can speed up the process.</note>
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In the following example, the bare clone is named
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<filename>linux-yocto-3.0.git</filename>, while the
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copy is named <filename>linux-yocto-3.0</filename>:
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<filename>linux-yocto-3.0-1.1.x.git</filename>, while the
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copy is named <filename>my-linux-yocto-3.0-1.1.x-work</filename>:
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<literallayout class='monospaced'>
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$ git clone --bare git://git.yoctoproject.org/linux-yocto-3.0 linux-yocto-3.0.git
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Initialized empty Git repository in /home/scottrif/linux-yocto-3.0.git/
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$ git clone --bare git://git.yoctoproject.org/linux-yocto-3.0-1.1.x linux-yocto-3.0-1.1.x.git
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Initialized empty Git repository in /home/scottrif/linux-yocto-3.0-1.1.x.git/
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remote: Counting objects: 2259181, done.
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remote: Compressing objects: 100% (373259/373259), done.
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remote: Total 2259181 (delta 1892638), reused 2231556 (delta 1865300)
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</literallayout></para>
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<para>Now create a clone of the bare clone just created:
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<literallayout class='monospaced'>
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$ git clone linux-yocto-3.0.git linux-yocto-3.0
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Initialized empty Git repository in /home/scottrif/linux-yocto-3.0/.git/
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$ git clone linux-yocto-3.0-1.1.x.git my-linux-yocto-3.0-1.1.x-work
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Initialized empty Git repository in /home/scottrif/my-linux-yocto-3.0-1.1.x/.git/
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Checking out files: 100% (36898/36898), done.
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</literallayout></para></listitem>
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<listitem id='poky-extras-repo'><para><emphasis>
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