Release 4.14 arch/xtensa/kernel/syscall.c
/*
* arch/xtensa/kernel/syscall.c
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001 - 2005 Tensilica Inc.
* Copyright (C) 2000 Silicon Graphics, Inc.
* Copyright (C) 1995 - 2000 by Ralf Baechle
*
* Joe Taylor <joe@tensilica.com, joetylr@yahoo.com>
* Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
* Chris Zankel <chris@zankel.net>
* Kevin Chea
*
*/
#include <linux/uaccess.h>
#include <asm/syscall.h>
#include <asm/unistd.h>
#include <linux/linkage.h>
#include <linux/stringify.h>
#include <linux/errno.h>
#include <linux/syscalls.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/mman.h>
#include <linux/sched/mm.h>
#include <linux/shm.h>
typedef void (*syscall_t)(void);
syscall_t sys_call_table[__NR_syscall_count] /* FIXME __cacheline_aligned */= {
[0 ... __NR_syscall_count - 1] = (syscall_t)&sys_ni_syscall,
#define __SYSCALL(nr,symbol,nargs) [ nr ] = (syscall_t)symbol,
#include <uapi/asm/unistd.h>
};
#define COLOUR_ALIGN(addr, pgoff) \
((((addr) + SHMLBA - 1) & ~(SHMLBA - 1)) + \
(((pgoff) << PAGE_SHIFT) & (SHMLBA - 1)))
asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg)
{
unsigned long ret;
long err;
err = do_shmat(shmid, shmaddr, shmflg, &ret, SHMLBA);
if (err)
return err;
return (long)ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Chris Zankel | 51 | 96.23% | 1 | 50.00% |
| Will Deacon | 2 | 3.77% | 1 | 50.00% |
| Total | 53 | 100.00% | 2 | 100.00% |
asmlinkage long xtensa_fadvise64_64(int fd, int advice,
unsigned long long offset, unsigned long long len)
{
return sys_fadvise64_64(fd, offset, len, advice);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Chris Zankel | 34 | 100.00% | 1 | 100.00% |
| Total | 34 | 100.00% | 1 | 100.00% |
#ifdef CONFIG_MMU
unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
unsigned long len, unsigned long pgoff, unsigned long flags)
{
struct vm_area_struct *vmm;
if (flags & MAP_FIXED) {
/* We do not accept a shared mapping if it would violate
* cache aliasing constraints.
*/
if ((flags & MAP_SHARED) &&
((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
return -EINVAL;
return addr;
}
if (len > TASK_SIZE)
return -ENOMEM;
if (!addr)
addr = TASK_UNMAPPED_BASE;
if (flags & MAP_SHARED)
addr = COLOUR_ALIGN(addr, pgoff);
else
addr = PAGE_ALIGN(addr);
for (vmm = find_vma(current->mm, addr); ; vmm = vmm->vm_next) {
/* At this point: (!vmm || addr < vmm->vm_end). */
if (TASK_SIZE - len < addr)
return -ENOMEM;
if (!vmm || addr + len <= vm_start_gap(vmm))
return addr;
addr = vmm->vm_end;
if (flags & MAP_SHARED)
addr = COLOUR_ALIGN(addr, pgoff);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Max Filippov | 186 | 98.41% | 1 | 50.00% |
| Hugh Dickins | 3 | 1.59% | 1 | 50.00% |
| Total | 189 | 100.00% | 2 | 100.00% |
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Max Filippov | 201 | 53.46% | 2 | 20.00% |
| Chris Zankel | 166 | 44.15% | 4 | 40.00% |
| Hugh Dickins | 3 | 0.80% | 1 | 10.00% |
| Ingo Molnar | 3 | 0.80% | 1 | 10.00% |
| Will Deacon | 2 | 0.53% | 1 | 10.00% |
| Linus Torvalds | 1 | 0.27% | 1 | 10.00% |
| Total | 376 | 100.00% | 10 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.