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![Greg Kroah-Hartman](/assets/img/avatar_default.png)
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>
163 lines
5.2 KiB
Text
163 lines
5.2 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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menuconfig AGP
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tristate "/dev/agpgart (AGP Support)"
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depends on ALPHA || IA64 || PARISC || PPC || X86
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depends on PCI
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---help---
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AGP (Accelerated Graphics Port) is a bus system mainly used to
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connect graphics cards to the rest of the system.
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If you have an AGP system and you say Y here, it will be possible to
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use the AGP features of your 3D rendering video card. This code acts
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as a sort of "AGP driver" for the motherboard's chipset.
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If you need more texture memory than you can get with the AGP GART
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(theoretically up to 256 MB, but in practice usually 64 or 128 MB
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due to kernel allocation issues), you could use PCI accesses
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and have up to a couple gigs of texture space.
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Note that this is the only means to have X/GLX use
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write-combining with MTRR support on the AGP bus. Without it, OpenGL
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direct rendering will be a lot slower but still faster than PIO.
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To compile this driver as a module, choose M here: the
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module will be called agpgart.
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You should say Y here if you want to use GLX or DRI.
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If unsure, say N.
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config AGP_ALI
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tristate "ALI chipset support"
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depends on AGP && X86_32
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---help---
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This option gives you AGP support for the GLX component of
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X on the following ALi chipsets. The supported chipsets
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include M1541, M1621, M1631, M1632, M1641,M1647,and M1651.
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For the ALi-chipset question, ALi suggests you refer to
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<http://www.ali.com.tw/>.
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The M1541 chipset can do AGP 1x and 2x, but note that there is an
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acknowledged incompatibility with Matrox G200 cards. Due to
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timing issues, this chipset cannot do AGP 2x with the G200.
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This is a hardware limitation. AGP 1x seems to be fine, though.
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config AGP_ATI
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tristate "ATI chipset support"
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depends on AGP && X86_32
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---help---
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This option gives you AGP support for the GLX component of
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X on the ATI RadeonIGP family of chipsets.
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config AGP_AMD
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tristate "AMD Irongate, 761, and 762 chipset support"
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depends on AGP && X86_32
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help
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This option gives you AGP support for the GLX component of
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X on AMD Irongate, 761, and 762 chipsets.
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config AGP_AMD64
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tristate "AMD Opteron/Athlon64 on-CPU GART support"
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depends on AGP && X86 && AMD_NB
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help
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This option gives you AGP support for the GLX component of
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X using the on-CPU northbridge of the AMD Athlon64/Opteron CPUs.
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You still need an external AGP bridge like the AMD 8151, VIA
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K8T400M, SiS755. It may also support other AGP bridges when loaded
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with agp_try_unsupported=1.
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config AGP_INTEL
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tristate "Intel 440LX/BX/GX, I8xx and E7x05 chipset support"
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depends on AGP && X86
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select INTEL_GTT
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help
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This option gives you AGP support for the GLX component of X
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on Intel 440LX/BX/GX, 815, 820, 830, 840, 845, 850, 860, 875,
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E7205 and E7505 chipsets and full support for the 810, 815, 830M,
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845G, 852GM, 855GM, 865G and I915 integrated graphics chipsets.
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config AGP_NVIDIA
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tristate "NVIDIA nForce/nForce2 chipset support"
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depends on AGP && X86_32
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help
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This option gives you AGP support for the GLX component of
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X on NVIDIA chipsets including nForce and nForce2
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config AGP_SIS
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tristate "SiS chipset support"
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depends on AGP && X86
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help
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This option gives you AGP support for the GLX component of
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X on Silicon Integrated Systems [SiS] chipsets.
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Note that 5591/5592 AGP chipsets are NOT supported.
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config AGP_SWORKS
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tristate "Serverworks LE/HE chipset support"
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depends on AGP && X86_32
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help
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Say Y here to support the Serverworks AGP card. See
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<http://www.serverworks.com/> for product descriptions and images.
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config AGP_VIA
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tristate "VIA chipset support"
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depends on AGP && X86
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help
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This option gives you AGP support for the GLX component of
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X on VIA MVP3/Apollo Pro chipsets.
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config AGP_I460
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tristate "Intel 460GX chipset support"
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depends on AGP && (IA64_DIG || IA64_GENERIC)
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help
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This option gives you AGP GART support for the Intel 460GX chipset
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for IA64 processors.
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config AGP_HP_ZX1
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tristate "HP ZX1 chipset AGP support"
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depends on AGP && (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC)
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help
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This option gives you AGP GART support for the HP ZX1 chipset
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for IA64 processors.
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config AGP_PARISC
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tristate "HP Quicksilver AGP support"
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depends on AGP && PARISC && 64BIT
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help
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This option gives you AGP GART support for the HP Quicksilver
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AGP bus adapter on HP PA-RISC machines (Ok, just on the C8000
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workstation...)
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config AGP_ALPHA_CORE
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tristate "Alpha AGP support"
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depends on AGP && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL)
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default AGP
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config AGP_UNINORTH
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tristate "Apple UniNorth & U3 AGP support"
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depends on AGP && PPC_PMAC
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help
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This option gives you AGP support for Apple machines with a
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UniNorth or U3 (Apple G5) bridge.
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config AGP_EFFICEON
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tristate "Transmeta Efficeon support"
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depends on AGP && X86_32
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help
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This option gives you AGP support for the Transmeta Efficeon
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series processors with integrated northbridges.
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config AGP_SGI_TIOCA
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tristate "SGI TIO chipset AGP support"
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depends on AGP && (IA64_SGI_SN2 || IA64_GENERIC)
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help
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This option gives you AGP GART support for the SGI TIO chipset
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for IA64 processors.
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config INTEL_GTT
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tristate
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depends on X86 && PCI
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