Release 4.11 fs/proc/nommu.c
/* nommu.c: mmu-less memory info files
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/mman.h>
#include <linux/proc_fs.h>
#include <linux/mm.h>
#include <linux/mmzone.h>
#include <linux/pagemap.h>
#include <linux/swap.h>
#include <linux/smp.h>
#include <linux/seq_file.h>
#include <linux/hugetlb.h>
#include <linux/vmalloc.h>
#include <linux/uaccess.h>
#include <asm/pgtable.h>
#include <asm/tlb.h>
#include <asm/div64.h>
#include "internal.h"
/*
* display a single region to a sequenced file
*/
static int nommu_region_show(struct seq_file *m, struct vm_region *region)
{
unsigned long ino = 0;
struct file *file;
dev_t dev = 0;
int flags;
flags = region->vm_flags;
file = region->vm_file;
if (file) {
struct inode *inode = file_inode(region->vm_file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
}
seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
seq_printf(m,
"%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
region->vm_start,
region->vm_end,
flags & VM_READ ? 'r' : '-',
flags & VM_WRITE ? 'w' : '-',
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
((loff_t)region->vm_pgoff) << PAGE_SHIFT,
MAJOR(dev), MINOR(dev), ino);
if (file) {
seq_pad(m, ' ');
seq_file_path(m, file, "");
}
seq_putc(m, '\n');
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 176 | 86.27% | 4 | 50.00% |
| Tetsuo Handa | 19 | 9.31% | 1 | 12.50% |
| Clément Calmels | 5 | 2.45% | 1 | 12.50% |
| Al Viro | 3 | 1.47% | 1 | 12.50% |
| Miklos Szeredi | 1 | 0.49% | 1 | 12.50% |
| Total | 204 | 100.00% | 8 | 100.00% |
/*
* display a list of all the REGIONs the kernel knows about
* - nommu kernels have a single flat list
*/
static int nommu_region_list_show(struct seq_file *m, void *_p)
{
struct rb_node *p = _p;
return nommu_region_show(m, rb_entry(p, struct vm_region, vm_rb));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 38 | 100.00% | 2 | 100.00% |
| Total | 38 | 100.00% | 2 | 100.00% |
static void *nommu_region_list_start(struct seq_file *m, loff_t *_pos)
{
struct rb_node *p;
loff_t pos = *_pos;
down_read(&nommu_region_sem);
for (p = rb_first(&nommu_region_tree); p; p = rb_next(p))
if (pos-- == 0)
return p;
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 65 | 100.00% | 3 | 100.00% |
| Total | 65 | 100.00% | 3 | 100.00% |
static void nommu_region_list_stop(struct seq_file *m, void *v)
{
up_read(&nommu_region_sem);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 21 | 100.00% | 2 | 100.00% |
| Total | 21 | 100.00% | 2 | 100.00% |
static void *nommu_region_list_next(struct seq_file *m, void *v, loff_t *pos)
{
(*pos)++;
return rb_next((struct rb_node *) v);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 37 | 100.00% | 3 | 100.00% |
| Total | 37 | 100.00% | 3 | 100.00% |
static const struct seq_operations proc_nommu_region_list_seqop = {
.start = nommu_region_list_start,
.next = nommu_region_list_next,
.stop = nommu_region_list_stop,
.show = nommu_region_list_show
};
static int proc_nommu_region_list_open(struct inode *inode, struct file *file)
{
return seq_open(file, &proc_nommu_region_list_seqop);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 25 | 100.00% | 2 | 100.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
static const struct file_operations proc_nommu_region_list_operations = {
.open = proc_nommu_region_list_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static int __init proc_nommu_init(void)
{
proc_create("maps", S_IRUGO, NULL, &proc_nommu_region_list_operations);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 21 | 87.50% | 2 | 66.67% |
| Alexey Dobriyan | 3 | 12.50% | 1 | 33.33% |
| Total | 24 | 100.00% | 3 | 100.00% |
fs_initcall(proc_nommu_init);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 505 | 93.35% | 5 | 33.33% |
| Tetsuo Handa | 19 | 3.51% | 1 | 6.67% |
| Clément Calmels | 5 | 0.92% | 1 | 6.67% |
| Al Viro | 3 | 0.55% | 1 | 6.67% |
| Alexey Dobriyan | 3 | 0.55% | 1 | 6.67% |
| James Morris | 1 | 0.18% | 1 | 6.67% |
| Paul Gortmaker | 1 | 0.18% | 1 | 6.67% |
| Arjan van de Ven | 1 | 0.18% | 1 | 6.67% |
| Linus Torvalds | 1 | 0.18% | 1 | 6.67% |
| Uwe Kleine-König | 1 | 0.18% | 1 | 6.67% |
| Miklos Szeredi | 1 | 0.18% | 1 | 6.67% |
| Total | 541 | 100.00% | 15 | 100.00% |
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