powerpc: Move /proc/ppc64 to /proc/powerpc and add symlink

Some of the stuff in /proc/ppc64 such as the RTAS bits are actually
useful to some 32-bit platforms. Rename the file, and create a
symlink on 64-bit for backward compatibility

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 0 insertions, 122 deletions

diff --git a/arch/powerpc/kernel/proc_ppc64.c b/arch/powerpc/kernel/proc_ppc64.c
deleted file mode 100644
index c647ddef40dc..000000000000
--- a/arch/powerpc/kernel/proc_ppc64.c
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * 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/slab.h>
-#include <linux/kernel.h>
-
-#include <asm/machdep.h>
-#include <asm/vdso_datapage.h>
-#include <asm/rtas.h>
-#include <asm/uaccess.h>
-#include <asm/prom.h>
-
-static loff_t  page_map_seek( struct file *file, loff_t off, int whence);
-static ssize_t page_map_read( struct file *file, char __user *buf, size_t nbytes,
-                              loff_t *ppos);
-static int     page_map_mmap( struct file *file, struct vm_area_struct *vma );
-
-static const struct file_operations page_map_fops = {
-        .llseek = page_map_seek,
-        .read   = page_map_read,
-        .mmap   = page_map_mmap
-};
-
-/*
- * 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("ppc64", NULL);
-        if (!root)
-                return 1;
-
-        if (!of_find_node_by_path("/rtas"))
-                return 0;
-
-        if (!proc_mkdir("rtas", root))
-                return 1;
-
-        if (!proc_symlink("rtas", NULL, "ppc64/rtas"))
-                return 1;
-
-        return 0;
-}
-core_initcall(proc_ppc64_create);
-
-static int __init proc_ppc64_init(void)
-{
-        struct proc_dir_entry *pde;
-
-        pde = proc_create_data("ppc64/systemcfg", S_IFREG|S_IRUGO, NULL,
-                               &page_map_fops, vdso_data);
-        if (!pde)
-                return 1;
-        pde->size = PAGE_SIZE;
-
-        return 0;
-}
-__initcall(proc_ppc64_init);
-
-static loff_t page_map_seek( struct file *file, loff_t off, int whence)
-{
-        loff_t new;
-        struct proc_dir_entry *dp = PDE(file->f_path.dentry->d_inode);
-
-        switch(whence) {
-        case 0:
-                new = off;
-                break;
-        case 1:
-                new = file->f_pos + off;
-                break;
-        case 2:
-                new = dp->size + off;
-                break;
-        default:
-                return -EINVAL;
-        }
-        if ( new < 0 || new > dp->size )
-                return -EINVAL;
-        return (file->f_pos = new);
-}
-
-static ssize_t page_map_read( struct file *file, char __user *buf, size_t nbytes,
-                              loff_t *ppos)
-{
-        struct proc_dir_entry *dp = PDE(file->f_path.dentry->d_inode);
-        return simple_read_from_buffer(buf, nbytes, ppos, dp->data, dp->size);
-}
-
-static int page_map_mmap( struct file *file, struct vm_area_struct *vma )
-{
-        struct proc_dir_entry *dp = PDE(file->f_path.dentry->d_inode);
-
-        if ((vma->vm_end - vma->vm_start) > dp->size)
-                return -EINVAL;
-
-        remap_pfn_range(vma, vma->vm_start, __pa(dp->data) >> PAGE_SHIFT,
-                                                dp->size, vma->vm_page_prot);
-        return 0;
-}
-