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d6331e0b14
Thomas said: There are a few bogus SPDX identifiers in various files and SPDX Identifiers used in tree or about to be used which have no corresponding License Text file in the LICENSES directory or use the new variant of the GPL-2.0[+] license identifiers which are not mentioned in the GPL-2.0 Valid-License-Identifiers: tags. There is no tool which can be used to scan the tree and also nothing which helps people who submit patches to check their stuff before submission. The following series cleans that up: - Add GPL-2.0-only and GPL-2.0-or-later identifiers to the GPL2.0 license and the Linux-syscall-note exception - Add X11, Apache-2.0, CC-BY-SA-4.0, CCDL-1.0, Linux-OpenIB license texts to the LICENSES directory along with the required documentation texts - Add a checker script which can read a single file or even a patch from the command line or does a full git tree scan [Thomas also wins some sort of special prize for including an SPDX-checking patch that complains about itself!]
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.