Release 4.14 arch/sh/kernel/sys_sh.c

// SPDX-License-Identifier: GPL-2.0
/*
 * linux/arch/sh/kernel/sys_sh.c
 *
 * This file contains various random system calls that
 * have a non-standard calling sequence on the Linux/SuperH
 * platform.
 *
 * Taken from i386 version.
 */
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/stat.h>
#include <linux/syscalls.h>
#include <linux/mman.h>
#include <linux/file.h>
#include <linux/utsname.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/ipc.h>
#include <asm/syscalls.h>
#include <linux/uaccess.h>
#include <asm/unistd.h>
#include <asm/cacheflush.h>
#include <asm/cachectl.h>



asmlinkage int old_mmap(unsigned long addr, unsigned long len,
	unsigned long prot, unsigned long flags,
	int fd, unsigned long off)
{
	if (off & ~PAGE_MASK)
		return -EINVAL;
	return sys_mmap_pgoff(addr, len, prot, flags, fd, off>>PAGE_SHIFT);
}

Contributors
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Tokens
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CommitProp
Linus Torvalds (pre-git)
57
98.28%
1
50.00%
Al Viro
1
1.72%
1
50.00%
Total
58
100.00%
2
100.00%



asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
	unsigned long prot, unsigned long flags,
	unsigned long fd, unsigned long pgoff)
{
	/*
         * The shift for mmap2 is constant, regardless of PAGE_SIZE
         * setting.
         */
	if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1))
		return -EINVAL;

	pgoff >>= PAGE_SHIFT - 12;

	return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
}

Contributors
Person
Tokens
Prop
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CommitProp
Linus Torvalds (pre-git)
45
60.00%
1
33.33%
Toshinobu Sugioka
29
38.67%
1
33.33%
Al Viro
1
1.33%
1
33.33%
Total
75
100.00%
3
100.00%

/* sys_cacheflush -- flush (part of) the processor cache.  */


asmlinkage int sys_cacheflush(unsigned long addr, unsigned long len, int op)
{
	struct vm_area_struct *vma;

	if ((op <= 0) || (op > (CACHEFLUSH_D_PURGE|CACHEFLUSH_I)))
		return -EINVAL;

	/*
         * Verify that the specified address region actually belongs
         * to this process.
         */
	if (addr + len < addr)
		return -EFAULT;

	down_read(&current->mm->mmap_sem);
	vma = find_vma (current->mm, addr);
	if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end) {
		up_read(&current->mm->mmap_sem);
		return -EFAULT;
	}

	switch (op & CACHEFLUSH_D_PURGE) {
		case CACHEFLUSH_D_INVAL:
			__flush_invalidate_region((void *)addr, len);
			break;
		case CACHEFLUSH_D_WB:
			__flush_wback_region((void *)addr, len);
			break;
		case CACHEFLUSH_D_PURGE:
			__flush_purge_region((void *)addr, len);
			break;
	}

	if (op & CACHEFLUSH_I)
		flush_icache_range(addr, addr+len);

	up_read(&current->mm->mmap_sem);
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Stuart Menefy
186
95.38%
1
33.33%
Giuseppe Cavallaro
9
4.62%
2
66.67%
Total
195
100.00%
3
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Stuart Menefy
193
49.36%
1
5.88%
Linus Torvalds (pre-git)
138
35.29%
3
17.65%
Toshinobu Sugioka
29
7.42%
1
5.88%
Paul Mundt
11
2.81%
4
23.53%
Giuseppe Cavallaro
9
2.30%
2
11.76%
Arnd Bergmann
3
0.77%
1
5.88%
Andrew Morton
3
0.77%
1
5.88%
Al Viro
2
0.51%
1
5.88%
Greg Kroah-Hartman
1
0.26%
1
5.88%
Linus Torvalds
1
0.26%
1
5.88%
Adrian Bunk
1
0.26%
1
5.88%
Total
391
100.00%
17
100.00%
Directory: arch/sh/kernel

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