arch/sh/mm/pg-nommu.c

   1 /*
   2  * arch/sh/mm/pg-nommu.c
   3  *
   4  * clear_page()/copy_page() implementation for MMUless SH.
   5  *
   6  * Copyright (C) 2003  Paul Mundt
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file "COPYING" in the main directory of this archive
  10  * for more details.
  11  */
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/string.h>
  15 #include <asm/page.h>
  16
  17 static void copy_page_nommu(void *to, void *from)
  18 {
  19         memcpy(to, from, PAGE_SIZE);
  20 }
  21
  22 static void clear_page_nommu(void *to)
  23 {
  24         memset(to, 0, PAGE_SIZE);
  25 }
  26
  27 static int __init pg_nommu_init(void)
  28 {
  29         copy_page = copy_page_nommu;
  30         clear_page = clear_page_nommu;
  31
  32         return 0;
  33 }
  34
  35 subsys_initcall(pg_nommu_init);
  36