![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>
224 lines
7 KiB
C
224 lines
7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <asm/pgtable.h>
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/* Prototypes of functions used across modules here in this directory. */
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#define vucp volatile unsigned char *
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#define vusp volatile unsigned short *
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#define vip volatile int *
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#define vuip volatile unsigned int *
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#define vulp volatile unsigned long *
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struct pt_regs;
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struct task_struct;
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struct pci_dev;
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struct pci_controller;
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/* core_apecs.c */
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extern struct pci_ops apecs_pci_ops;
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extern void apecs_init_arch(void);
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extern void apecs_pci_clr_err(void);
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extern void apecs_machine_check(unsigned long vector, unsigned long la_ptr);
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extern void apecs_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
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/* core_cia.c */
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extern struct pci_ops cia_pci_ops;
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extern void cia_init_pci(void);
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extern void cia_init_arch(void);
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extern void pyxis_init_arch(void);
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extern void cia_kill_arch(int);
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extern void cia_machine_check(unsigned long vector, unsigned long la_ptr);
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extern void cia_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
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/* core_irongate.c */
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extern struct pci_ops irongate_pci_ops;
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extern int irongate_pci_clr_err(void);
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extern void irongate_init_arch(void);
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#define irongate_pci_tbi ((void *)0)
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/* core_lca.c */
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extern struct pci_ops lca_pci_ops;
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extern void lca_init_arch(void);
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extern void lca_machine_check(unsigned long vector, unsigned long la_ptr);
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extern void lca_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
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/* core_marvel.c */
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extern struct pci_ops marvel_pci_ops;
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extern void marvel_init_arch(void);
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extern void marvel_kill_arch(int);
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extern void marvel_machine_check(unsigned long, unsigned long);
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extern void marvel_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
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extern int marvel_pa_to_nid(unsigned long);
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extern int marvel_cpuid_to_nid(int);
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extern unsigned long marvel_node_mem_start(int);
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extern unsigned long marvel_node_mem_size(int);
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extern struct _alpha_agp_info *marvel_agp_info(void);
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struct io7 *marvel_find_io7(int pe);
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struct io7 *marvel_next_io7(struct io7 *prev);
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void io7_clear_errors(struct io7 *io7);
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/* core_mcpcia.c */
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extern struct pci_ops mcpcia_pci_ops;
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extern void mcpcia_init_arch(void);
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extern void mcpcia_init_hoses(void);
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extern void mcpcia_machine_check(unsigned long vector, unsigned long la_ptr);
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extern void mcpcia_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
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/* core_polaris.c */
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extern struct pci_ops polaris_pci_ops;
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extern int polaris_read_config_dword(struct pci_dev *, int, u32 *);
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extern int polaris_write_config_dword(struct pci_dev *, int, u32);
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extern void polaris_init_arch(void);
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extern void polaris_machine_check(unsigned long vector, unsigned long la_ptr);
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#define polaris_pci_tbi ((void *)0)
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/* core_t2.c */
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extern struct pci_ops t2_pci_ops;
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extern void t2_init_arch(void);
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extern void t2_kill_arch(int);
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extern void t2_machine_check(unsigned long vector, unsigned long la_ptr);
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extern void t2_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
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/* core_titan.c */
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extern struct pci_ops titan_pci_ops;
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extern void titan_init_arch(void);
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extern void titan_kill_arch(int);
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extern void titan_machine_check(unsigned long, unsigned long);
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extern void titan_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
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extern struct _alpha_agp_info *titan_agp_info(void);
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/* core_tsunami.c */
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extern struct pci_ops tsunami_pci_ops;
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extern void tsunami_init_arch(void);
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extern void tsunami_kill_arch(int);
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extern void tsunami_machine_check(unsigned long vector, unsigned long la_ptr);
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extern void tsunami_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
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/* core_wildfire.c */
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extern struct pci_ops wildfire_pci_ops;
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extern void wildfire_init_arch(void);
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extern void wildfire_kill_arch(int);
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extern void wildfire_machine_check(unsigned long vector, unsigned long la_ptr);
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extern void wildfire_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
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extern int wildfire_pa_to_nid(unsigned long);
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extern int wildfire_cpuid_to_nid(int);
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extern unsigned long wildfire_node_mem_start(int);
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extern unsigned long wildfire_node_mem_size(int);
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/* console.c */
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#ifdef CONFIG_VGA_HOSE
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extern void find_console_vga_hose(void);
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extern void locate_and_init_vga(void *(*)(void *, void *));
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#else
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static inline void find_console_vga_hose(void) { }
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static inline void locate_and_init_vga(void *(*sel_func)(void *, void *)) { }
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#endif
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/* setup.c */
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extern unsigned long srm_hae;
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extern int boot_cpuid;
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#ifdef CONFIG_VERBOSE_MCHECK
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extern unsigned long alpha_verbose_mcheck;
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#endif
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/* srmcons.c */
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#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SRM)
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extern void register_srm_console(void);
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extern void unregister_srm_console(void);
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#else
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#define register_srm_console()
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#define unregister_srm_console()
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#endif
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/* smp.c */
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extern void setup_smp(void);
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extern void handle_ipi(struct pt_regs *);
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/* bios32.c */
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/* extern void reset_for_srm(void); */
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/* time.c */
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extern irqreturn_t rtc_timer_interrupt(int irq, void *dev);
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extern void init_clockevent(void);
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extern void common_init_rtc(void);
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extern unsigned long est_cycle_freq;
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/* smc37c93x.c */
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extern void SMC93x_Init(void);
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/* smc37c669.c */
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extern void SMC669_Init(int);
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/* es1888.c */
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extern void es1888_init(void);
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/* ../lib/fpreg.c */
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extern void alpha_write_fp_reg (unsigned long reg, unsigned long val);
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extern unsigned long alpha_read_fp_reg (unsigned long reg);
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/* head.S */
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extern void wrmces(unsigned long mces);
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extern void cserve_ena(unsigned long);
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extern void cserve_dis(unsigned long);
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extern void __smp_callin(unsigned long);
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/* entry.S */
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extern void entArith(void);
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extern void entIF(void);
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extern void entInt(void);
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extern void entMM(void);
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extern void entSys(void);
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extern void entUna(void);
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extern void entDbg(void);
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/* ptrace.c */
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extern int ptrace_set_bpt (struct task_struct *child);
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extern int ptrace_cancel_bpt (struct task_struct *child);
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/* traps.c */
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extern void dik_show_regs(struct pt_regs *regs, unsigned long *r9_15);
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extern void die_if_kernel(char *, struct pt_regs *, long, unsigned long *);
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/* sys_titan.c */
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extern void titan_dispatch_irqs(u64);
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/* ../mm/init.c */
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extern void switch_to_system_map(void);
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extern void srm_paging_stop(void);
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static inline int
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__alpha_remap_area_pages(unsigned long address, unsigned long phys_addr,
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unsigned long size, unsigned long flags)
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{
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pgprot_t prot;
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prot = __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE
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return ioremap_page_range(address, address + size, phys_addr, prot);
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}
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/* irq.c */
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#ifdef CONFIG_SMP
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#define mcheck_expected(cpu) (cpu_data[cpu].mcheck_expected)
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#define mcheck_taken(cpu) (cpu_data[cpu].mcheck_taken)
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#define mcheck_extra(cpu) (cpu_data[cpu].mcheck_extra)
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#else
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extern struct mcheck_info
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{
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unsigned char expected __attribute__((aligned(8)));
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unsigned char taken;
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unsigned char extra;
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} __mcheck_info;
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#define mcheck_expected(cpu) (*((void)(cpu), &__mcheck_info.expected))
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#define mcheck_taken(cpu) (*((void)(cpu), &__mcheck_info.taken))
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#define mcheck_extra(cpu) (*((void)(cpu), &__mcheck_info.extra))
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#endif
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extern void process_mcheck_info(unsigned long vector, unsigned long la_ptr,
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const char *machine, int expected);
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