Release 4.14 arch/powerpc/kernel/proc_powerpc.c
/*
* Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/kernel.h>
#include <asm/machdep.h>
#include <asm/vdso_datapage.h>
#include <asm/rtas.h>
#include <linux/uaccess.h>
#include <asm/prom.h>
#ifdef CONFIG_PPC64
static loff_t page_map_seek(struct file *file, loff_t off, int whence)
{
return fixed_size_llseek(file, off, whence, PAGE_SIZE);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Peter Bergner | 20 | 68.97% | 1 | 33.33% |
| Al Viro | 9 | 31.03% | 2 | 66.67% |
| Total | 29 | 100.00% | 3 | 100.00% |
static ssize_t page_map_read( struct file *file, char __user *buf, size_t nbytes,
loff_t *ppos)
{
return simple_read_from_buffer(buf, nbytes, ppos,
PDE_DATA(file_inode(file)), PAGE_SIZE);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Peter Bergner | 29 | 67.44% | 1 | 33.33% |
| Al Viro | 14 | 32.56% | 2 | 66.67% |
| Total | 43 | 100.00% | 3 | 100.00% |
static int page_map_mmap( struct file *file, struct vm_area_struct *vma )
{
if ((vma->vm_end - vma->vm_start) > PAGE_SIZE)
return -EINVAL;
remap_pfn_range(vma, vma->vm_start,
__pa(PDE_DATA(file_inode(file))) >> PAGE_SHIFT,
PAGE_SIZE, vma->vm_page_prot);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Peter Bergner | 53 | 81.54% | 1 | 33.33% |
| Al Viro | 9 | 13.85% | 1 | 33.33% |
| William Lee Irwin III | 3 | 4.62% | 1 | 33.33% |
| Total | 65 | 100.00% | 3 | 100.00% |
static const struct file_operations page_map_fops = {
.llseek = page_map_seek,
.read = page_map_read,
.mmap = page_map_mmap
};
static int __init proc_ppc64_init(void)
{
struct proc_dir_entry *pde;
pde = proc_create_data("powerpc/systemcfg", S_IFREG|S_IRUGO, NULL,
&page_map_fops, vdso_data);
if (!pde)
return 1;
proc_set_size(pde, PAGE_SIZE);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Herrenschmidt | 46 | 92.00% | 1 | 50.00% |
| David Howells | 4 | 8.00% | 1 | 50.00% |
| Total | 50 | 100.00% | 2 | 100.00% |
__initcall(proc_ppc64_init);
#endif /* CONFIG_PPC64 */
/*
* Create the ppc64 and ppc64/rtas directories early. This allows us to
* assume that they have been previously created in drivers.
*/
static int __init proc_ppc64_create(void)
{
struct proc_dir_entry *root;
root = proc_mkdir("powerpc", NULL);
if (!root)
return 1;
#ifdef CONFIG_PPC64
if (!proc_symlink("ppc64", NULL, "powerpc"))
pr_err("Failed to create link /proc/ppc64 -> /proc/powerpc\n");
#endif
if (!of_find_node_by_path("/rtas"))
return 0;
if (!proc_mkdir("rtas", root))
return 1;
if (!proc_symlink("rtas", NULL, "powerpc/rtas"))
return 1;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Herrenschmidt | 95 | 100.00% | 1 | 100.00% |
| Total | 95 | 100.00% | 1 | 100.00% |
core_initcall(proc_ppc64_create);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Herrenschmidt | 185 | 52.86% | 3 | 25.00% |
| Peter Bergner | 118 | 33.71% | 1 | 8.33% |
| Al Viro | 32 | 9.14% | 3 | 25.00% |
| Andrew Morton | 6 | 1.71% | 1 | 8.33% |
| David Howells | 4 | 1.14% | 1 | 8.33% |
| William Lee Irwin III | 3 | 0.86% | 1 | 8.33% |
| David Gibson | 1 | 0.29% | 1 | 8.33% |
| Linus Torvalds | 1 | 0.29% | 1 | 8.33% |
| Total | 350 | 100.00% | 12 | 100.00% |
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