target/linux/ubicom32/files/arch/ubicom32/kernel/init_task.c

   1 /*
   2  * arch/ubicom32/kernel/init_task.c
   3  *   Ubicom32 architecture task initialization implementation.
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  *
   7  * This file is part of the Ubicom32 Linux Kernel Port.
   8  *
   9  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  10  * it and/or modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation, either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  15  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  16  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  * the GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with the Ubicom32 Linux Kernel Port.  If not,
  21  * see <http://www.gnu.org/licenses/>.
  22  *
  23  * Ubicom32 implementation derived from (with many thanks):
  24  *   arch/m68knommu
  25  *   arch/blackfin
  26  *   arch/parisc
  27  */
  28 #include <linux/mm.h>
  29 #include <linux/module.h>
  30 #include <linux/sched.h>
  31 #include <linux/init.h>
  32 #include <linux/init_task.h>
  33 #include <linux/fs.h>
  34 #include <linux/mqueue.h>
  35 #include <linux/uaccess.h>
  36 #include <asm/pgtable.h>
  37 #include <linux/version.h>
  38
  39 ///static struct fs_struct init_fs = INIT_FS;
  40 static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
  41 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
  42 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32)
  43 struct mm_struct init_mm = INIT_MM(init_mm);
  44 EXPORT_SYMBOL(init_mm);
  45 #endif
  46
  47 /*
  48  * Initial task structure.
  49  *
  50  * All other task structs will be allocated on slabs in fork.c
  51  */
  52 struct task_struct init_task = INIT_TASK(init_task);
  53
  54 EXPORT_SYMBOL(init_task);
  55
  56 /*
  57  * Initial thread structure.
  58  *
  59  * We need to make sure that this is 8192-byte aligned due to the
  60  * way process stacks are handled. This is done by having a special
  61  * "init_task" linker map entry..
  62  */
  63 union thread_union init_thread_union
  64         __attribute__((__section__(".data.init_task"))) =
  65                 { INIT_THREAD_INFO(init_task) };