COPYING: create a new file with points to the Kernel license files

With the addition of SPDX patchset, the contents of COPYING file
is now duplicated at two other files under LICENSE:
	LICENSES/preferred/GPL-2.0
	LICENSES/exceptions/Linux-syscall-note

It is easy to check that the contents of the licence written on
those files are identical with COPYING using:

	$ diff -upr COPYING LICENSES/preferred/GPL-2.0
	$ diff -upr COPYING LICENSES/exceptions/Linux-syscall-note|less

Also, a new file was added, with describes how SPDX should work at
the Kernel source files:
	Documentation/process/license-rules.rst

Instead fo having it copying the contents of two files, and not
even mentioning the third one, replace it by a file whose content
points to the other tree files, preserving the Kernel's license.

Adjust license-rules.rst accordingly.

Please notice that this file preserves the Kernel license as
is, without any changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 18 insertions, 0 deletions

diff --git a/COPYING.new b/COPYING.new
new file mode 100644
index 000000000000..da4cb28febe6
--- /dev/null
+++ b/COPYING.new
@@ -0,0 +1,18 @@
+The Linux Kernel is provided under:
+
+	SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+Being under the terms of the GNU General Public License version 2 only,
+according with:
+
+	LICENSES/preferred/GPL-2.0
+
+With an explicit syscall exception, as stated at:
+
+	LICENSES/exceptions/Linux-syscall-note
+
+In addition, other licenses may also apply. Please see:
+
+	Documentation/process/license-rules.rst
+
+for more details.