The Linux Kernel documentation — The Linux Kernel documentation

Working with the development community
Internal API manuals
Development tools and processes
User-oriented documentation
Firmware-related documentation
Architecture-specific documentation
This is the top level of the kernel’s documentation tree. Kernel documentation, like the kernel itself, is very much a work in progress; that is especially true as we work to integrate our many scattered documents into a coherent whole. Please note that improvements to the documentation are welcome; join the linux-doc list at vger.kernel.org if you want to help out.
The essential guides for interacting with the kernel’s development community and getting your work upstream.
Working with the development community
Manuals for use by developers working to interface with the rest of the kernel.
Internal API manuals
Various other manuals with useful information for all kernel developers.
Development tools and processes
The following manuals are written for users of the kernel — those who are trying to get it to work optimally on a given system and application developers seeking information on the kernel’s user-space APIs.
User-oriented documentation
See also: the Linux man pages, which are kept separately from the kernel’s own documentation.
The following holds information on the kernel’s expectations regarding the platform firmware.
Firmware-related documentation
Architecture-specific documentation
There are several unsorted documents that don’t seem to fit on other parts of the documentation body, or may require some adjustments and/or conversion to reStructuredText format, or are simply too old.