tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * linux/include/asm-arm/page-nommu.h
3 *
4 * Copyright (C) 2004 Hyok S. Choi
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#ifndef _ASMARM_PAGE_NOMMU_H
11#define _ASMARM_PAGE_NOMMU_H
12
13#if !defined(CONFIG_SMALL_TASKS) && PAGE_SHIFT < 13
14#define KTHREAD_SIZE (8192)
15#else
16#define KTHREAD_SIZE PAGE_SIZE
17#endif
18
19#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
20#define free_user_page(page, addr) free_page(addr)
21
22#define clear_page(page) memset((page), 0, PAGE_SIZE)
23#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
24
25#define clear_user_page(page, vaddr, pg) clear_page(page)
26#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
27
28/*
29 * These are used to make use of C type-checking..
30 */
31typedef unsigned long pte_t;
32typedef unsigned long pmd_t;
33typedef unsigned long pgd_t[2];
34typedef unsigned long pgprot_t;
35
36#define pte_val(x) (x)
37#define pmd_val(x) (x)
38#define pgd_val(x) ((x)[0])
39#define pgprot_val(x) (x)
40
41#define __pte(x) (x)
42#define __pmd(x) (x)
43#define __pgprot(x) (x)
44
45/* to align the pointer to the (next) page boundary */
46#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
47
48extern unsigned long memory_start;
49extern unsigned long memory_end;
50
51#endif