arch/hexagon/kernel/init_task.c

   1 /*
   2  * Init task definition
   3  *
   4  * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
   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 and
   8  * only version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18  * 02110-1301, USA.
  19  */
  20
  21 #include <linux/mm.h>
  22 #include <linux/module.h>
  23 #include <linux/sched.h>
  24 #include <linux/init_task.h>
  25 #include <linux/fs.h>
  26 #include <linux/mqueue.h>
  27 #include <asm/thread_info.h>
  28 #include <asm/uaccess.h>
  29 #include <asm/pgtable.h>
  30
  31 static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
  32 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
  33
  34 /*
  35  * Initial thread structure.
  36  *
  37  * We need to make sure that this is 8192-byte aligned due to the
  38  * way process stacks are handled. This is done by making sure
  39  * the linker maps this in the .text segment right after head.S,
  40  * and making head.S ensure the proper alignment.
  41  */
  42 union thread_union init_thread_union
  43         __attribute__((__section__(".data.init_task"),
  44                 __aligned__(THREAD_SIZE))) = {
  45                         INIT_THREAD_INFO(init_task)
  46                 };
  47
  48 /*
  49  * Initial task structure.
  50  *
  51  * All other task structs will be allocated on slabs in fork.c
  52  */
  53 struct task_struct init_task = INIT_TASK(init_task);
  54 EXPORT_SYMBOL(init_task);