License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 22:07:57 +08:00
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# SPDX-License-Identifier: GPL-2.0
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2011-02-26 18:24:56 +08:00
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config UNICORE32
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def_bool y
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2015-11-20 10:19:29 +08:00
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select ARCH_HAS_DEVMEM_IS_ALLOWED
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2013-10-08 10:17:30 +08:00
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select ARCH_MIGHT_HAVE_PC_PARPORT
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2014-01-02 03:33:53 +08:00
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select ARCH_MIGHT_HAVE_PC_SERIO
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2018-08-25 14:46:34 +08:00
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select DMA_DIRECT_OPS
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2011-02-26 18:24:56 +08:00
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select HAVE_GENERIC_DMA_COHERENT
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select HAVE_KERNEL_GZIP
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select HAVE_KERNEL_BZIP2
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2012-10-05 08:11:23 +08:00
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select GENERIC_ATOMIC64
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2011-02-26 18:24:56 +08:00
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select HAVE_KERNEL_LZO
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select HAVE_KERNEL_LZMA
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2013-03-07 12:48:16 +08:00
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select VIRT_TO_BUS
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2012-04-15 17:52:54 +08:00
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select ARCH_HAVE_CUSTOM_GPIO_H
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2011-02-26 18:24:56 +08:00
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select GENERIC_FIND_FIRST_BIT
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select GENERIC_IRQ_PROBE
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2011-03-25 01:26:42 +08:00
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select GENERIC_IRQ_SHOW
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2011-02-26 18:24:56 +08:00
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select ARCH_WANT_FRAME_POINTERS
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2011-11-24 20:54:28 +08:00
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select GENERIC_IOMAP
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2012-09-28 13:01:03 +08:00
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select MODULES_USE_ELF_REL
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2018-05-09 12:53:49 +08:00
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select NEED_DMA_MAP_STATE
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2011-02-26 18:24:56 +08:00
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help
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UniCore-32 is 32-bit Instruction Set Architecture,
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including a series of low-power-consumption RISC chip
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designs licensed by PKUnity Ltd.
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Please see web page at <http://www.pkunity.com/>.
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config GENERIC_CSUM
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def_bool y
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2014-04-08 06:39:19 +08:00
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config NO_IOPORT_MAP
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2011-02-26 18:24:56 +08:00
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bool
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config STACKTRACE_SUPPORT
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def_bool y
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config LOCKDEP_SUPPORT
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def_bool y
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config RWSEM_GENERIC_SPINLOCK
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def_bool y
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config RWSEM_XCHGADD_ALGORITHM
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bool
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config ARCH_HAS_ILOG2_U32
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bool
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config ARCH_HAS_ILOG2_U64
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bool
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config GENERIC_HWEIGHT
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def_bool y
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config GENERIC_CALIBRATE_DELAY
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def_bool y
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config ARCH_MAY_HAVE_PC_FDC
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bool
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2012-04-12 09:18:46 +08:00
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config ZONE_DMA
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def_bool y
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2011-02-26 18:24:56 +08:00
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menu "System Type"
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config MMU
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def_bool y
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config ARCH_FPGA
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bool
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config ARCH_PUV3
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def_bool y
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select CPU_UCV2
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select GENERIC_CLOCKEVENTS
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select HAVE_CLK
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2016-04-19 19:27:28 +08:00
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select GPIOLIB
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2011-02-26 18:24:56 +08:00
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# CONFIGs for ARCH_PUV3
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if ARCH_PUV3
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choice
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prompt "Board Selection"
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default PUV3_DB0913
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config PUV3_FPGA_DLX200
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select ARCH_FPGA
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bool "FPGA board"
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config PUV3_DB0913
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bool "DEBUG board (0913)"
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config PUV3_NB0916
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bool "NetBook board (0916)"
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2012-08-31 14:29:24 +08:00
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select PWM
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select PWM_PUV3
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2011-02-26 18:24:56 +08:00
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config PUV3_SMW0919
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bool "Security Mini-Workstation board (0919)"
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endchoice
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config PUV3_PM
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def_bool y if !ARCH_FPGA
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endif
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source "arch/unicore32/mm/Kconfig"
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2017-09-26 11:47:59 +08:00
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comment "Floating point support"
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2011-02-26 18:24:56 +08:00
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config UNICORE_FPU_F64
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def_bool y if !ARCH_FPGA
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endmenu
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menu "Bus support"
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config PCI
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bool "PCI Support"
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help
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Find out whether you have a PCI motherboard. PCI is the name of a
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bus system, i.e. the way the CPU talks to the other stuff inside
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your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
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VESA. If you have PCI, say Y, otherwise N.
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source "drivers/pci/Kconfig"
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source "drivers/pcmcia/Kconfig"
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endmenu
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menu "Kernel Features"
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source "kernel/Kconfig.hz"
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config LEDS
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def_bool y
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2013-03-28 19:34:56 +08:00
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depends on GPIOLIB
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2011-02-26 18:24:56 +08:00
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config ALIGNMENT_TRAP
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def_bool y
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help
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Unicore processors can not fetch/store information which is not
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naturally aligned on the bus, i.e., a 4 byte fetch must start at an
|
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address divisible by 4. On 32-bit Unicore processors, these non-aligned
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fetch/store instructions will be emulated in software if you say
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here, which has a severe performance impact. This is necessary for
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correct operation of some network protocols. With an IP-only
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configuration it is safe to say N, otherwise say Y.
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endmenu
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menu "Boot options"
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config CMDLINE
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string "Default kernel command string"
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default ""
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config CMDLINE_FORCE
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bool "Always use the default kernel command string"
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depends on CMDLINE != ""
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help
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Always use the default kernel command string, even if the boot
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loader passes other arguments to the kernel.
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This is useful if you cannot or don't want to change the
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command-line options your boot loader passes to the kernel.
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If unsure, say N.
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endmenu
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menu "Power management options"
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source "kernel/power/Kconfig"
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source "drivers/cpufreq/Kconfig"
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config ARCH_SUSPEND_POSSIBLE
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def_bool y if !ARCH_FPGA
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config ARCH_HIBERNATION_POSSIBLE
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def_bool y if !ARCH_FPGA
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endmenu
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if ARCH_PUV3
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config PUV3_GPIO
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bool
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depends on !ARCH_FPGA
|
2012-10-24 04:01:43 +08:00
|
|
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select GPIO_SYSFS
|
2011-02-26 18:24:56 +08:00
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default y
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2011-02-26 19:51:18 +08:00
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if PUV3_NB0916
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menu "PKUnity NetBook-0916 Features"
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config I2C_BATTERY_BQ27200
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tristate "I2C Battery BQ27200 Support"
|
2011-11-13 08:43:23 +08:00
|
|
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select I2C_PUV3
|
2011-02-26 19:51:18 +08:00
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select POWER_SUPPLY
|
2015-09-23 03:35:06 +08:00
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select BATTERY_BQ27XXX
|
2011-02-26 19:51:18 +08:00
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config I2C_EEPROM_AT24
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tristate "I2C EEPROMs AT24 support"
|
2011-11-13 08:43:23 +08:00
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select I2C_PUV3
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2011-02-26 19:51:18 +08:00
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select EEPROM_AT24
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config LCD_BACKLIGHT
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tristate "LCD Backlight support"
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select BACKLIGHT_LCD_SUPPORT
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select BACKLIGHT_PWM
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endmenu
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endif
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2011-02-26 18:24:56 +08:00
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endif
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