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 17:07:57 +03:00
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# SPDX-License-Identifier: GPL-2.0
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2005-02-03 17:28:23 +03:00
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config SIBYTE_SB1250
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bool
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2007-11-01 04:57:55 +03:00
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select CEVT_SB1250
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select CSRC_SB1250
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2005-02-03 17:28:23 +03:00
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select HW_HAS_PCI
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2015-05-26 19:20:06 +03:00
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select IRQ_MIPS_CPU
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2007-03-09 15:17:32 +03:00
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select SIBYTE_ENABLE_LDT_IF_PCI
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2007-03-29 22:39:56 +04:00
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select SIBYTE_HAS_ZBUS_PROFILING
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2005-02-03 17:28:23 +03:00
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select SIBYTE_SB1xxx_SOC
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2006-06-04 14:51:46 +04:00
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select SYS_SUPPORTS_SMP
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2005-02-03 17:28:23 +03:00
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config SIBYTE_BCM1120
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bool
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2007-11-01 04:57:55 +03:00
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select CEVT_SB1250
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select CSRC_SB1250
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2015-05-26 19:20:06 +03:00
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select IRQ_MIPS_CPU
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2005-02-03 17:28:23 +03:00
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select SIBYTE_BCM112X
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2007-03-09 18:59:56 +03:00
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select SIBYTE_HAS_ZBUS_PROFILING
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2005-02-03 17:28:23 +03:00
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select SIBYTE_SB1xxx_SOC
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config SIBYTE_BCM1125
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bool
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2007-11-01 04:57:55 +03:00
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select CEVT_SB1250
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select CSRC_SB1250
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2005-02-03 17:28:23 +03:00
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select HW_HAS_PCI
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2015-05-26 19:20:06 +03:00
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select IRQ_MIPS_CPU
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2005-02-03 17:28:23 +03:00
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select SIBYTE_BCM112X
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2007-03-09 18:59:56 +03:00
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select SIBYTE_HAS_ZBUS_PROFILING
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2005-02-03 17:28:23 +03:00
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select SIBYTE_SB1xxx_SOC
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config SIBYTE_BCM1125H
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bool
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2007-11-01 04:57:55 +03:00
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select CEVT_SB1250
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select CSRC_SB1250
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2005-02-03 17:28:23 +03:00
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select HW_HAS_PCI
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2015-05-26 19:20:06 +03:00
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select IRQ_MIPS_CPU
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2005-02-03 17:28:23 +03:00
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select SIBYTE_BCM112X
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2007-03-09 15:17:32 +03:00
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select SIBYTE_ENABLE_LDT_IF_PCI
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2007-03-09 18:59:56 +03:00
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select SIBYTE_HAS_ZBUS_PROFILING
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2005-02-03 17:28:23 +03:00
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select SIBYTE_SB1xxx_SOC
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config SIBYTE_BCM112X
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bool
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2007-11-01 04:57:55 +03:00
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select CEVT_SB1250
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select CSRC_SB1250
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2015-05-26 19:20:06 +03:00
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select IRQ_MIPS_CPU
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2005-02-03 17:28:23 +03:00
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select SIBYTE_SB1xxx_SOC
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2007-03-09 18:59:56 +03:00
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select SIBYTE_HAS_ZBUS_PROFILING
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2005-02-03 17:28:23 +03:00
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2005-10-20 10:56:38 +04:00
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config SIBYTE_BCM1x80
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bool
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2007-11-01 04:57:55 +03:00
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select CEVT_BCM1480
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select CSRC_BCM1480
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2005-10-20 10:56:38 +04:00
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select HW_HAS_PCI
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2015-05-26 19:20:06 +03:00
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select IRQ_MIPS_CPU
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2007-03-29 22:39:56 +04:00
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select SIBYTE_HAS_ZBUS_PROFILING
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2005-10-20 10:56:38 +04:00
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select SIBYTE_SB1xxx_SOC
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2006-06-04 14:51:46 +04:00
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select SYS_SUPPORTS_SMP
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2005-10-20 10:56:38 +04:00
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config SIBYTE_BCM1x55
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bool
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2007-11-01 04:57:55 +03:00
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select CEVT_BCM1480
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select CSRC_BCM1480
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2005-10-20 10:56:38 +04:00
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select HW_HAS_PCI
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2015-05-26 19:20:06 +03:00
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select IRQ_MIPS_CPU
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2005-10-20 10:56:38 +04:00
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select SIBYTE_SB1xxx_SOC
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2007-03-09 18:59:56 +03:00
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select SIBYTE_HAS_ZBUS_PROFILING
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2006-06-04 14:51:46 +04:00
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select SYS_SUPPORTS_SMP
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2005-10-20 10:56:38 +04:00
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2005-02-03 17:28:23 +03:00
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config SIBYTE_SB1xxx_SOC
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bool
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select DMA_COHERENT
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2015-05-26 19:20:06 +03:00
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select IRQ_MIPS_CPU
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2005-02-03 17:28:23 +03:00
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select SWAP_IO_SPACE
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select SYS_SUPPORTS_32BIT_KERNEL
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select SYS_SUPPORTS_64BIT_KERNEL
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2012-11-15 23:48:50 +04:00
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select FW_CFE
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2009-06-02 16:22:06 +04:00
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select SYS_HAS_EARLY_PRINTK
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2005-02-03 17:28:23 +03:00
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choice
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prompt "SiByte SOC Stepping"
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depends on SIBYTE_SB1xxx_SOC
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config CPU_SB1_PASS_2_1250
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bool "1250 An"
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depends on SIBYTE_SB1250
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select CPU_SB1_PASS_2
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help
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Also called BCM1250 Pass 2
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config CPU_SB1_PASS_2_2
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bool "1250 Bn"
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depends on SIBYTE_SB1250
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select CPU_HAS_PREFETCH
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help
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Also called BCM1250 Pass 2.2
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config CPU_SB1_PASS_4
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bool "1250 Cn"
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depends on SIBYTE_SB1250
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select CPU_HAS_PREFETCH
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help
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Also called BCM1250 Pass 3
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config CPU_SB1_PASS_2_112x
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bool "112x Hybrid"
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depends on SIBYTE_BCM112X
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select CPU_SB1_PASS_2
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config CPU_SB1_PASS_3
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bool "112x An"
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depends on SIBYTE_BCM112X
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select CPU_HAS_PREFETCH
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endchoice
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config CPU_SB1_PASS_2
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bool
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config SIBYTE_HAS_LDT
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bool
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2007-03-09 15:17:32 +03:00
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config SIBYTE_ENABLE_LDT_IF_PCI
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bool
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select SIBYTE_HAS_LDT if PCI
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2005-02-03 17:28:23 +03:00
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2005-11-10 19:32:14 +03:00
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config SB1_CEX_ALWAYS_FATAL
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2005-10-20 10:57:40 +04:00
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bool "All cache exceptions considered fatal (no recovery attempted)"
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depends on SIBYTE_SB1xxx_SOC
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2005-11-10 19:32:14 +03:00
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config SB1_CERR_STALL
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2005-10-20 10:57:40 +04:00
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bool "Stall (rather than panic) on fatal cache error"
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depends on SIBYTE_SB1xxx_SOC
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2005-02-03 17:28:23 +03:00
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config SIBYTE_CFE_CONSOLE
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bool "Use firmware console"
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2009-06-02 16:22:06 +04:00
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depends on SIBYTE_SB1xxx_SOC
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2005-02-03 17:28:23 +03:00
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help
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Use the CFE API's console write routines during boot. Other console
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options (VT console, sb1250 duart console, etc.) should not be
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configured.
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config SIBYTE_BUS_WATCHER
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bool "Support for Bus Watcher statistics"
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2013-06-17 17:00:38 +04:00
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depends on SIBYTE_SB1xxx_SOC && \
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2015-07-16 18:52:11 +03:00
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(SIBYTE_BCM112X || SIBYTE_SB1250 || \
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SIBYTE_BCM1x55 || SIBYTE_BCM1x80)
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2005-02-03 17:28:23 +03:00
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help
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Handle and keep statistics on the bus error interrupts (COR_ECC,
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BAD_ECC, IO_BUS).
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config SIBYTE_BW_TRACE
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bool "Capture bus trace before bus error"
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depends on SIBYTE_BUS_WATCHER
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help
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Run a continuous bus trace, dumping the raw data as soon as
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a ZBbus error is detected. Cannot work if ZBbus profiling
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is turned on, and also will interfere with JTAG-based trace
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buffer activity. Raw buffer data is dumped to console, and
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must be processed off-line.
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config SIBYTE_TBPROF
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2007-03-09 18:59:56 +03:00
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tristate "Support for ZBbus profiling"
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depends on SIBYTE_HAS_ZBUS_PROFILING
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config SIBYTE_HAS_ZBUS_PROFILING
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bool
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