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6f52b16c5b
Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are 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. See the previous patch in this series for the methodology of how this patch was researched. 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>
21 lines
648 B
C
21 lines
648 B
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _SH_CACHECTL_H
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#define _SH_CACHECTL_H
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/* Definitions for the cacheflush system call. */
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#define CACHEFLUSH_D_INVAL 0x1 /* invalidate (without write back) */
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#define CACHEFLUSH_D_WB 0x2 /* write back (without invalidate) */
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#define CACHEFLUSH_D_PURGE 0x3 /* writeback and invalidate */
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#define CACHEFLUSH_I 0x4
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/*
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* Options for cacheflush system call
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*/
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#define ICACHE CACHEFLUSH_I /* flush instruction cache */
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#define DCACHE CACHEFLUSH_D_PURGE /* writeback and flush data cache */
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#define BCACHE (ICACHE|DCACHE) /* flush both caches */
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#endif /* _SH_CACHECTL_H */
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