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Add section on changing kernel parameters

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puneetse
2019-02-14 17:06:28 -08:00
parent 07eecae52c
commit f080e928fe
1 changed files with 29 additions and 2 deletions
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source/clear-linux/guides/maintenance/kernel-development.rst
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@@ -312,8 +312,7 @@ consider using a patch management tool in addition to Git such as
#. Locate the section of the SPEC file further down that contains
patch application and append your patch file number used in the step above.
In this example, the patch file is called
:file:`2001-my-patch-for-driver-A.patch`
In this example, patch2001 is added.
.. code-block:: bash
@@ -334,6 +333,33 @@ consider using a patch management tool in addition to Git such as
Modify kernel boot parameters
=============================
The kernel boot options are passed from the bootloader to the kernel with
command-line parameters.
While temporarily changes can be made to kernel parameters on a running
system or on a during boot, you can also modify the default parameters that
are persistent and distributed with a customized kernel.
#. Open the kernel :file:`cmdline` file in an editor.
.. code-block:: bash
$EDITOR cmdline
#. Make any desired change to the kernel parameters.
For example, you can remove the :command:`quiet` parameter to see more
verbose output of kernel log messages during the boot process.
#. Commit and save the changes to the :file:`cmdline` file.
See the
`Kernel parameters documentation`_ for a list of available parameters.
Build and install the kernel
****************************
After changes have been made to the kernel SPEC file and config file,
@@ -404,5 +430,6 @@ Related topics
.. _`Quilt`: http://savannah.nongnu.org/projects/quilt
.. _`clearlinux-pkgs GitHub`: https://github.com/clearlinux-pkgs?&q=linux
.. _`kernel.org`: https://www.kernel.org/
.. _`Kernel parameters documentation`: https://www.kernel.org/doc/Documentation/admin-guide/kernel-parameters.txt
.. _`autospec`: https://clearlinux.org/documentation/clear-linux/concepts/autospec-about
.. _`git-format-patch Documentation`: https://git-scm.com/docs/git-format-patch