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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2015-06-01 19:13:53 +08:00
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/*
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* Meson8b clock tree IDs
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*/
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#ifndef __MESON8B_CLKC_H
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#define __MESON8B_CLKC_H
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#define CLKID_UNUSED 0
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#define CLKID_XTAL 1
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#define CLKID_PLL_FIXED 2
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#define CLKID_PLL_VID 3
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#define CLKID_PLL_SYS 4
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#define CLKID_FCLK_DIV2 5
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#define CLKID_FCLK_DIV3 6
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#define CLKID_FCLK_DIV4 7
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#define CLKID_FCLK_DIV5 8
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#define CLKID_FCLK_DIV7 9
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#define CLKID_CLK81 10
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#define CLKID_MALI 11
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#define CLKID_CPUCLK 12
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#define CLKID_ZERO 13
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2016-04-29 03:01:51 +08:00
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#define CLKID_MPEG_SEL 14
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#define CLKID_MPEG_DIV 15
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2017-07-31 19:38:31 +08:00
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#define CLKID_DDR 16
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#define CLKID_DOS 17
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#define CLKID_ISA 18
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#define CLKID_PL301 19
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#define CLKID_PERIPHS 20
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#define CLKID_SPICC 21
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#define CLKID_I2C 22
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2017-06-11 18:16:32 +08:00
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#define CLKID_SAR_ADC 23
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2017-07-31 19:38:31 +08:00
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#define CLKID_SMART_CARD 24
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2017-06-11 18:16:34 +08:00
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#define CLKID_RNG0 25
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2017-07-31 19:38:31 +08:00
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#define CLKID_UART0 26
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#define CLKID_SDHC 27
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#define CLKID_STREAM 28
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#define CLKID_ASYNC_FIFO 29
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2017-06-11 18:16:33 +08:00
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#define CLKID_SDIO 30
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2017-07-31 19:38:31 +08:00
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#define CLKID_ABUF 31
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#define CLKID_HIU_IFACE 32
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#define CLKID_ASSIST_MISC 33
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#define CLKID_SPI 34
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#define CLKID_I2S_SPDIF 35
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2017-06-11 18:16:36 +08:00
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#define CLKID_ETH 36
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2017-07-31 19:38:31 +08:00
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#define CLKID_DEMUX 37
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#define CLKID_AIU_GLUE 38
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#define CLKID_IEC958 39
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#define CLKID_I2S_OUT 40
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#define CLKID_AMCLK 41
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#define CLKID_AIFIFO2 42
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#define CLKID_MIXER 43
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#define CLKID_MIXER_IFACE 44
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#define CLKID_ADC 45
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#define CLKID_BLKMV 46
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#define CLKID_AIU 47
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#define CLKID_UART1 48
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#define CLKID_G2D 49
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2017-06-11 18:16:35 +08:00
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#define CLKID_USB0 50
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#define CLKID_USB1 51
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2017-07-31 19:38:31 +08:00
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#define CLKID_RESET 52
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#define CLKID_NAND 53
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#define CLKID_DOS_PARSER 54
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2017-06-11 18:16:35 +08:00
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#define CLKID_USB 55
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2017-07-31 19:38:31 +08:00
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#define CLKID_VDIN1 56
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#define CLKID_AHB_ARB0 57
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#define CLKID_EFUSE 58
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#define CLKID_BOOT_ROM 59
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#define CLKID_AHB_DATA_BUS 60
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#define CLKID_AHB_CTRL_BUS 61
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#define CLKID_HDMI_INTR_SYNC 62
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#define CLKID_HDMI_PCLK 63
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2017-06-11 18:16:35 +08:00
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#define CLKID_USB1_DDR_BRIDGE 64
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#define CLKID_USB0_DDR_BRIDGE 65
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2017-07-31 19:38:31 +08:00
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#define CLKID_MMC_PCLK 66
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#define CLKID_DVIN 67
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#define CLKID_UART2 68
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2017-06-11 18:16:32 +08:00
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#define CLKID_SANA 69
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2017-07-31 19:38:31 +08:00
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#define CLKID_VPU_INTR 70
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#define CLKID_SEC_AHB_AHB3_BRIDGE 71
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#define CLKID_CLK81_A9 72
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#define CLKID_VCLK2_VENCI0 73
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#define CLKID_VCLK2_VENCI1 74
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#define CLKID_VCLK2_VENCP0 75
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#define CLKID_VCLK2_VENCP1 76
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#define CLKID_GCLK_VENCI_INT 77
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#define CLKID_GCLK_VENCP_INT 78
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#define CLKID_DAC_CLK 79
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#define CLKID_AOCLK_GATE 80
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#define CLKID_IEC958_GATE 81
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#define CLKID_ENC480P 82
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#define CLKID_RNG1 83
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#define CLKID_GCLK_VENCL_INT 84
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#define CLKID_VCLK2_VENCLMCC 85
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#define CLKID_VCLK2_VENCL 86
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#define CLKID_VCLK2_OTHER 87
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#define CLKID_EDP 88
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#define CLKID_AO_MEDIA_CPU 89
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#define CLKID_AO_AHB_SRAM 90
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#define CLKID_AO_AHB_BUS 91
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#define CLKID_AO_IFACE 92
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#define CLKID_MPLL0 93
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#define CLKID_MPLL1 94
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#define CLKID_MPLL2 95
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2018-04-24 03:35:08 +08:00
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#define CLKID_NAND_CLK 112
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2019-02-11 06:26:02 +08:00
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#define CLKID_APB 124
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2018-11-23 05:40:14 +08:00
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#define CLKID_PERIPH 126
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#define CLKID_AXI 128
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#define CLKID_L2_DRAM 130
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2019-03-24 23:11:01 +08:00
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#define CLKID_VPU 190
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2019-03-24 23:14:22 +08:00
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#define CLKID_VDEC_1 196
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#define CLKID_VDEC_HCODEC 199
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#define CLKID_VDEC_2 202
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#define CLKID_VDEC_HEVC 206
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2019-05-21 04:03:16 +08:00
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#define CLKID_CTS_AMCLK 209
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#define CLKID_CTS_MCLK_I958 212
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#define CLKID_CTS_I958 213
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2015-06-01 19:13:53 +08:00
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#endif /* __MESON8B_CLKC_H */
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