51 строка
1.1 KiB
C
51 строка
1.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2005-2017 Andes Technology Corporation
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#include <linux/syscalls.h>
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#include <linux/uaccess.h>
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#include <asm/cachectl.h>
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#include <asm/proc-fns.h>
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SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
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unsigned long, prot, unsigned long, flags,
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unsigned long, fd, unsigned long, pgoff)
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{
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if (pgoff & (~PAGE_MASK >> 12))
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return -EINVAL;
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return sys_mmap_pgoff(addr, len, prot, flags, fd,
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pgoff >> (PAGE_SHIFT - 12));
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}
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SYSCALL_DEFINE4(fadvise64_64_wrapper,int, fd, int, advice, loff_t, offset,
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loff_t, len)
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{
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return sys_fadvise64_64(fd, offset, len, advice);
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}
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SYSCALL_DEFINE3(cacheflush, unsigned int, start, unsigned int, end, int, cache)
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{
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struct vm_area_struct *vma;
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bool flushi = true, wbd = true;
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vma = find_vma(current->mm, start);
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if (!vma)
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return -EFAULT;
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switch (cache) {
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case ICACHE:
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wbd = false;
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break;
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case DCACHE:
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flushi = false;
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break;
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case BCACHE:
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break;
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default:
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return -EINVAL;
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}
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cpu_cache_wbinval_range_check(vma, start, end, flushi, wbd);
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return 0;
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}
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