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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2008-12-08 17:07:47 +08:00
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#ifndef __SPARC_KERNEL_H
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#define __SPARC_KERNEL_H
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2008-12-08 17:08:24 +08:00
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#include <linux/interrupt.h>
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2014-05-17 05:25:57 +08:00
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#include <linux/ftrace.h>
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2008-12-08 17:08:24 +08:00
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2011-02-26 14:59:20 +08:00
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#include <asm/traps.h>
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2011-08-02 14:27:17 +08:00
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#include <asm/head.h>
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#include <asm/io.h>
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2011-02-26 14:59:20 +08:00
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2008-12-07 16:02:08 +08:00
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/* cpu.c */
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2009-01-22 15:16:40 +08:00
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extern const char *sparc_pmu_type;
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2008-12-07 16:02:08 +08:00
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extern unsigned int fsr_storage;
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2011-04-22 06:45:45 +08:00
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extern int ncpus_probed;
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2008-12-07 16:02:08 +08:00
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2011-07-29 14:31:26 +08:00
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#ifdef CONFIG_SPARC64
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/* setup_64.c */
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struct seq_file;
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2014-05-17 05:25:51 +08:00
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void cpucap_info(struct seq_file *);
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2011-08-02 14:27:17 +08:00
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2014-05-17 05:25:57 +08:00
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static inline unsigned long kimage_addr_to_ra(const void *p)
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2011-08-02 14:27:17 +08:00
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{
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unsigned long val = (unsigned long) p;
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return kern_base + (val - KERNBASE);
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}
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2014-05-17 05:25:54 +08:00
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/* sys_sparc_64.c */
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asmlinkage long sys_kern_features(void);
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/* unaligned_64.c */
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asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn);
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int handle_popc(u32 insn, struct pt_regs *regs);
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void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr);
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void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr);
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2014-05-17 05:25:57 +08:00
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/* smp_64.c */
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void __irq_entry smp_call_function_client(int irq, struct pt_regs *regs);
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void __irq_entry smp_call_function_single_client(int irq, struct pt_regs *regs);
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void __irq_entry smp_penguin_jailcell(int irq, struct pt_regs *regs);
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void __irq_entry smp_receive_signal_client(int irq, struct pt_regs *regs);
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2014-05-17 05:26:09 +08:00
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/* kgdb_64.c */
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void __irq_entry smp_kgdb_capture_client(int irq, struct pt_regs *regs);
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2014-05-17 05:25:58 +08:00
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/* pci.c */
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int pci64_dma_supported(struct pci_dev *pdev, u64 device_mask);
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2014-05-17 05:26:00 +08:00
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/* signal32.c */
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void do_sigreturn32(struct pt_regs *regs);
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asmlinkage void do_rt_sigreturn32(struct pt_regs *regs);
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void do_signal32(struct pt_regs * regs);
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asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp);
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2017-06-13 04:41:46 +08:00
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/* time_64.c */
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void __init time_init_early(void);
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2014-05-17 05:26:08 +08:00
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/* compat_audit.c */
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2016-03-11 07:21:43 +08:00
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extern unsigned int sparc32_dir_class[];
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extern unsigned int sparc32_chattr_class[];
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extern unsigned int sparc32_write_class[];
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extern unsigned int sparc32_read_class[];
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extern unsigned int sparc32_signal_class[];
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int sparc32_classify_syscall(unsigned int syscall);
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2011-07-29 14:31:26 +08:00
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#endif
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2008-12-08 17:04:59 +08:00
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#ifdef CONFIG_SPARC32
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2012-05-26 05:20:08 +08:00
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/* setup_32.c */
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2014-05-17 05:25:39 +08:00
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struct linux_romvec;
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2012-05-26 05:20:08 +08:00
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void sparc32_start_kernel(struct linux_romvec *rp);
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2008-12-08 17:04:59 +08:00
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/* cpu.c */
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2014-05-17 05:25:51 +08:00
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void cpu_probe(void);
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2008-12-07 16:02:08 +08:00
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2008-12-08 17:04:59 +08:00
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/* traps_32.c */
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2014-05-17 05:25:51 +08:00
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void handle_hw_divzero(struct pt_regs *regs, unsigned long pc,
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unsigned long npc, unsigned long psr);
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2008-12-08 17:08:24 +08:00
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/* irq_32.c */
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extern struct irqaction static_irqaction[];
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extern int static_irq_count;
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extern spinlock_t irq_action_lock;
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2014-05-17 05:25:51 +08:00
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void unexpected_irq(int irq, void *dev_id, struct pt_regs * regs);
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void init_IRQ(void);
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2011-01-29 06:08:18 +08:00
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/* sun4m_irq.c */
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2014-05-17 05:25:51 +08:00
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void sun4m_init_IRQ(void);
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void sun4m_unmask_profile_irq(void);
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void sun4m_clear_profile_irq(int cpu);
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2011-01-29 06:08:18 +08:00
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2013-02-15 22:52:06 +08:00
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/* sun4m_smp.c */
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void sun4m_cpu_pre_starting(void *arg);
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void sun4m_cpu_pre_online(void *arg);
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2014-04-22 03:39:42 +08:00
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void __init smp4m_boot_cpus(void);
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int smp4m_boot_one_cpu(int i, struct task_struct *idle);
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void __init smp4m_smp_done(void);
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void smp4m_cross_call_irq(void);
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void smp4m_percpu_timer_interrupt(struct pt_regs *regs);
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2013-02-15 22:52:06 +08:00
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2011-01-29 06:08:18 +08:00
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/* sun4d_irq.c */
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extern spinlock_t sun4d_imsk_lock;
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2014-05-17 05:25:51 +08:00
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void sun4d_init_IRQ(void);
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int sun4d_request_irq(unsigned int irq,
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irq_handler_t handler,
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unsigned long irqflags,
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const char *devname, void *dev_id);
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int show_sun4d_interrupts(struct seq_file *, void *);
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void sun4d_distribute_irqs(void);
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void sun4d_free_irq(unsigned int irq, void *dev_id);
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2011-01-29 06:08:18 +08:00
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2013-02-15 22:52:06 +08:00
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/* sun4d_smp.c */
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void sun4d_cpu_pre_starting(void *arg);
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void sun4d_cpu_pre_online(void *arg);
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2014-04-22 03:39:43 +08:00
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void __init smp4d_boot_cpus(void);
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int smp4d_boot_one_cpu(int i, struct task_struct *idle);
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void __init smp4d_smp_done(void);
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void smp4d_cross_call_irq(void);
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void smp4d_percpu_timer_interrupt(struct pt_regs *regs);
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2013-02-15 22:52:06 +08:00
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/* leon_smp.c */
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void leon_cpu_pre_starting(void *arg);
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void leon_cpu_pre_online(void *arg);
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2014-04-22 03:39:44 +08:00
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void leonsmp_ipi_interrupt(void);
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void leon_cross_call_irq(void);
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2013-02-15 22:52:06 +08:00
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2011-01-29 06:08:18 +08:00
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/* head_32.S */
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extern unsigned int t_nmi[];
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extern unsigned int linux_trap_ipi15_sun4d[];
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extern unsigned int linux_trap_ipi15_sun4m[];
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2016-04-23 01:41:05 +08:00
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extern struct tt_entry trapbase;
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2011-02-26 14:59:20 +08:00
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extern struct tt_entry trapbase_cpu1;
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extern struct tt_entry trapbase_cpu2;
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extern struct tt_entry trapbase_cpu3;
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2011-01-29 06:08:18 +08:00
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extern char cputypval[];
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/* entry.S */
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extern unsigned long lvl14_save[4];
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extern unsigned int real_irq_entry[];
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extern unsigned int smp4d_ticker[];
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extern unsigned int patchme_maybe_smp_msg[];
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2014-05-17 05:25:51 +08:00
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void floppy_hardint(void);
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2011-01-29 06:08:18 +08:00
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/* trampoline_32.S */
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extern unsigned long sun4m_cpu_startup;
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extern unsigned long sun4d_cpu_startup;
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2008-12-08 17:08:24 +08:00
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2014-04-22 03:39:25 +08:00
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/* process_32.c */
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asmlinkage int sparc_do_fork(unsigned long clone_flags,
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unsigned long stack_start,
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struct pt_regs *regs,
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unsigned long stack_size);
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2014-04-22 03:39:26 +08:00
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/* signal_32.c */
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asmlinkage void do_sigreturn(struct pt_regs *regs);
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asmlinkage void do_rt_sigreturn(struct pt_regs *regs);
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void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0,
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unsigned long thread_info_flags);
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asmlinkage int do_sys_sigstack(struct sigstack __user *ssptr,
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struct sigstack __user *ossptr,
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unsigned long sp);
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2014-04-22 03:39:29 +08:00
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2014-04-22 03:39:37 +08:00
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/* ptrace_32.c */
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asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p);
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2014-04-22 03:39:38 +08:00
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/* unaligned_32.c */
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asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn);
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asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn);
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2014-04-22 03:39:29 +08:00
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/* windows.c */
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void try_to_clear_window_buffer(struct pt_regs *regs, int who);
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2014-04-22 03:39:35 +08:00
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/* auxio_32.c */
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void __init auxio_probe(void);
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void __init auxio_power_probe(void);
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2014-05-17 05:25:42 +08:00
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/* pcic.c */
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extern void __iomem *pcic_regs;
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void pcic_nmi(unsigned int pend, struct pt_regs *regs);
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2014-05-17 05:25:44 +08:00
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/* time_32.c */
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void __init time_init(void);
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2008-12-08 17:04:59 +08:00
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#else /* CONFIG_SPARC32 */
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2008-12-08 17:07:47 +08:00
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#endif /* CONFIG_SPARC32 */
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#endif /* !(__SPARC_KERNEL_H) */
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