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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2008-04-03 01:53:55 +08:00
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#ifndef INCLUDE_XEN_OPS_H
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#define INCLUDE_XEN_OPS_H
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#include <linux/percpu.h>
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2014-02-26 18:30:30 +08:00
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#include <linux/notifier.h>
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2014-07-01 01:53:02 +08:00
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#include <linux/efi.h>
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2018-08-28 15:40:13 +08:00
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#include <xen/features.h>
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2012-10-17 00:19:15 +08:00
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#include <asm/xen/interface.h>
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2015-11-05 23:15:07 +08:00
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#include <xen/interface/vcpu.h>
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2008-04-03 01:53:55 +08:00
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DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
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2016-07-29 17:06:48 +08:00
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DECLARE_PER_CPU(uint32_t, xen_vcpu_id);
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static inline uint32_t xen_vcpu_nr(int cpu)
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2016-06-30 23:56:37 +08:00
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{
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return per_cpu(xen_vcpu_id, cpu);
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}
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2017-06-03 08:05:59 +08:00
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#define XEN_VCPU_ID_INVALID U32_MAX
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2011-02-17 19:04:20 +08:00
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void xen_arch_pre_suspend(void);
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void xen_arch_post_suspend(int suspend_cancelled);
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2008-05-27 06:31:27 +08:00
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2008-07-09 06:06:32 +08:00
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void xen_timer_resume(void);
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void xen_arch_resume(void);
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2015-04-29 06:46:20 +08:00
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void xen_arch_suspend(void);
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2008-07-09 06:06:32 +08:00
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2017-04-25 01:58:37 +08:00
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void xen_reboot(int reason);
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2014-02-26 18:30:30 +08:00
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void xen_resume_notifier_register(struct notifier_block *nb);
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void xen_resume_notifier_unregister(struct notifier_block *nb);
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2015-11-05 23:15:07 +08:00
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bool xen_vcpu_stolen(int vcpu);
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void xen_setup_runstate_info(int cpu);
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2016-05-20 15:26:48 +08:00
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void xen_time_setup_guest(void);
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2017-11-01 09:46:33 +08:00
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void xen_manage_runstate_time(int action);
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2015-11-05 23:15:07 +08:00
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void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
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2016-07-26 20:15:11 +08:00
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u64 xen_steal_clock(int cpu);
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2015-11-05 23:15:07 +08:00
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2010-05-14 19:45:07 +08:00
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int xen_setup_shutdown_event(void);
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2009-02-10 04:05:46 +08:00
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extern unsigned long *xen_contiguous_bitmap;
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2017-03-15 01:35:54 +08:00
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2018-11-01 07:11:49 +08:00
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#if defined(CONFIG_XEN_PV) || defined(CONFIG_ARM) || defined(CONFIG_ARM64)
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2013-10-10 21:41:10 +08:00
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int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
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2013-10-10 00:56:32 +08:00
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unsigned int address_bits,
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dma_addr_t *dma_handle);
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2009-02-10 04:05:46 +08:00
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2013-10-10 21:41:10 +08:00
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void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
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2017-03-15 01:35:54 +08:00
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#else
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static inline int xen_create_contiguous_region(phys_addr_t pstart,
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unsigned int order,
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unsigned int address_bits,
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dma_addr_t *dma_handle)
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{
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return 0;
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}
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static inline void xen_destroy_contiguous_region(phys_addr_t pstart,
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unsigned int order) { }
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2018-11-01 07:11:49 +08:00
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#endif
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2018-08-28 15:40:13 +08:00
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2018-11-01 07:11:49 +08:00
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#if defined(CONFIG_XEN_PV)
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int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr,
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xen_pfn_t *pfn, int nr, int *err_ptr, pgprot_t prot,
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unsigned int domid, bool no_translate, struct page **pages);
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#else
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2018-08-28 15:40:13 +08:00
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static inline int xen_remap_pfn(struct vm_area_struct *vma, unsigned long addr,
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xen_pfn_t *pfn, int nr, int *err_ptr,
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pgprot_t prot, unsigned int domid,
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bool no_translate, struct page **pages)
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{
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BUG();
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return 0;
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}
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2017-03-15 01:35:54 +08:00
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#endif
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2009-02-10 04:05:46 +08:00
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2012-03-29 01:30:02 +08:00
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struct vm_area_struct;
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2015-03-11 22:49:57 +08:00
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2018-08-28 15:40:13 +08:00
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#ifdef CONFIG_XEN_AUTO_XLATE
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int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
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unsigned long addr,
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xen_pfn_t *gfn, int nr,
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int *err_ptr, pgprot_t prot,
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unsigned int domid,
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struct page **pages);
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int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
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int nr, struct page **pages);
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#else
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/*
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* These two functions are called from arch/x86/xen/mmu.c and so stubs
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* are needed for a configuration not specifying CONFIG_XEN_AUTO_XLATE.
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*/
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static inline int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
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unsigned long addr,
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xen_pfn_t *gfn, int nr,
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int *err_ptr, pgprot_t prot,
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unsigned int domid,
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struct page **pages)
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{
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return -EOPNOTSUPP;
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}
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static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
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int nr, struct page **pages)
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{
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return -EOPNOTSUPP;
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}
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#endif
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2015-03-11 22:49:57 +08:00
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/*
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2018-05-09 21:16:12 +08:00
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* xen_remap_domain_gfn_array() - map an array of foreign frames by gfn
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2015-03-11 22:49:57 +08:00
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* @vma: VMA to map the pages into
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* @addr: Address at which to map the pages
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* @gfn: Array of GFNs to map
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* @nr: Number entries in the GFN array
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* @err_ptr: Returns per-GFN error status.
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* @prot: page protection mask
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* @domid: Domain owning the pages
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* @pages: Array of pages if this domain has an auto-translated physmap
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*
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* @gfn and @err_ptr may point to the same buffer, the GFNs will be
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* overwritten by the error codes after they are mapped.
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*
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* Returns the number of successfully mapped frames, or a -ve error
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* code.
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*/
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2018-08-28 15:40:13 +08:00
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static inline int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
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unsigned long addr,
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xen_pfn_t *gfn, int nr,
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int *err_ptr, pgprot_t prot,
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unsigned int domid,
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struct page **pages)
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{
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if (xen_feature(XENFEAT_auto_translated_physmap))
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return xen_xlate_remap_gfn_array(vma, addr, gfn, nr, err_ptr,
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prot, domid, pages);
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/* We BUG_ON because it's a programmer error to pass a NULL err_ptr,
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* and the consequences later is quite hard to detect what the actual
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* cause of "wrong memory was mapped in".
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*/
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BUG_ON(err_ptr == NULL);
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return xen_remap_pfn(vma, addr, gfn, nr, err_ptr, prot, domid,
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false, pages);
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}
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2015-03-11 22:49:57 +08:00
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2018-05-09 21:16:12 +08:00
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/*
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* xen_remap_domain_mfn_array() - map an array of foreign frames by mfn
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* @vma: VMA to map the pages into
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* @addr: Address at which to map the pages
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* @mfn: Array of MFNs to map
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* @nr: Number entries in the MFN array
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* @err_ptr: Returns per-MFN error status.
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* @prot: page protection mask
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* @domid: Domain owning the pages
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* @pages: Array of pages if this domain has an auto-translated physmap
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*
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* @mfn and @err_ptr may point to the same buffer, the MFNs will be
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* overwritten by the error codes after they are mapped.
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*
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* Returns the number of successfully mapped frames, or a -ve error
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* code.
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*/
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2018-08-28 15:40:13 +08:00
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static inline int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
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unsigned long addr, xen_pfn_t *mfn,
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int nr, int *err_ptr,
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pgprot_t prot, unsigned int domid,
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struct page **pages)
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{
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if (xen_feature(XENFEAT_auto_translated_physmap))
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return -EOPNOTSUPP;
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return xen_remap_pfn(vma, addr, mfn, nr, err_ptr, prot, domid,
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true, pages);
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}
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2018-05-09 21:16:12 +08:00
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2015-08-08 00:34:41 +08:00
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/* xen_remap_domain_gfn_range() - map a range of foreign frames
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2015-03-11 22:49:57 +08:00
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* @vma: VMA to map the pages into
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* @addr: Address at which to map the pages
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* @gfn: First GFN to map.
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* @nr: Number frames to map
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* @prot: page protection mask
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* @domid: Domain owning the pages
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* @pages: Array of pages if this domain has an auto-translated physmap
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*
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* Returns the number of successfully mapped frames, or a -ve error
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* code.
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*/
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2018-08-28 15:40:13 +08:00
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static inline int xen_remap_domain_gfn_range(struct vm_area_struct *vma,
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unsigned long addr,
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xen_pfn_t gfn, int nr,
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pgprot_t prot, unsigned int domid,
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struct page **pages)
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2017-11-04 01:04:11 +08:00
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{
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2018-08-28 15:40:13 +08:00
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if (xen_feature(XENFEAT_auto_translated_physmap))
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return -EOPNOTSUPP;
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2017-11-04 01:04:11 +08:00
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2018-08-28 15:40:13 +08:00
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return xen_remap_pfn(vma, addr, &gfn, nr, NULL, prot, domid, false,
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pages);
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2017-11-04 01:04:11 +08:00
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}
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2018-08-28 15:40:13 +08:00
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int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
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int numpgs, struct page **pages);
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2017-11-04 01:04:11 +08:00
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2016-04-07 20:03:19 +08:00
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int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
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unsigned long nr_grant_frames);
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2009-05-21 17:09:46 +08:00
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2012-11-28 00:39:40 +08:00
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bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
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2014-07-01 01:53:02 +08:00
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2016-04-07 20:03:31 +08:00
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efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
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efi_status_t xen_efi_set_time(efi_time_t *tm);
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efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
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efi_time_t *tm);
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efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
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efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
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u32 *attr, unsigned long *data_size,
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void *data);
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efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
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efi_char16_t *name, efi_guid_t *vendor);
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efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
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u32 attr, unsigned long data_size,
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void *data);
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efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
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u64 *remaining_space,
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u64 *max_variable_size);
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efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
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efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
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unsigned long count, unsigned long sg_list);
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efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
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unsigned long count, u64 *max_size,
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int *reset_type);
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2017-04-25 01:58:39 +08:00
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void xen_efi_reset_system(int reset_type, efi_status_t status,
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unsigned long data_size, efi_char16_t *data);
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2014-07-01 01:53:02 +08:00
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2015-02-19 23:23:17 +08:00
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#ifdef CONFIG_PREEMPT
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static inline void xen_preemptible_hcall_begin(void)
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{
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}
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static inline void xen_preemptible_hcall_end(void)
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{
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}
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#else
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DECLARE_PER_CPU(bool, xen_in_preemptible_hcall);
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static inline void xen_preemptible_hcall_begin(void)
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{
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__this_cpu_write(xen_in_preemptible_hcall, true);
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}
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static inline void xen_preemptible_hcall_end(void)
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{
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__this_cpu_write(xen_in_preemptible_hcall, false);
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}
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#endif /* CONFIG_PREEMPT */
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2008-04-03 01:53:55 +08:00
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#endif /* INCLUDE_XEN_OPS_H */
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