Where can I get a list of all available kernel options in Red Hat Enterprise Linux?

Updated

Release Found: Red Hat Enterprise Linux, all versions

Solution

A comprehensive list of general kernel options as well as documentation about kernel internals can be found in the kernel-doc package, specifically within the kernel-parameters.txt file. You will find detailed instructions on how to install a package in the "How do I install or upgrade an RPM package?" article.

# yum whatprovides */kernel-parameters.txt
kernel-doc-<version>.noarch : Various documentation bits found in the kernel source

This file lists all the optional kernel parameters than can be passed at kernel boot time via the kernel boot command line.

Once the kernel-doc package is installed, kernel options documentation can be found in the following file:

  • For Red Hat Enterprise Linux 3:

      /usr/share/doc/kernel-doc-2.4.21/kernel-parameters.txt

  • For Red Hat Enterprise Linux 4:

      /usr/share/doc/kernel-doc-2.6.9/Documentation/kernel-parameters.txt

  • For Red Hat Enterprise Linux 5:

      /usr/share/doc/kernel-doc-2.6.18/Documentation/kernel-parameters.txt

  • For Red Hat Enterprise Linux 6:

      /usr/share/doc/kernel-doc-2.6.32/Documentation/kernel-parameters.txt

  • For Red Hat Enterprise Linux 7:

      /usr/share/doc/kernel-doc-3.10.0/Documentation/kernel-parameters.txt

Architecture specific options are documented in the corresponding subdirectory. For example, for x86_64 on Red Hat Enterprise Linux 5, see

/usr/share/doc/kernel-doc-2.6.18/Documentation/x86_64/boot-options.txt
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