init_task.c 1.1 KB

123456789101112131415161718192021222324252627282930313233343536373839404142
  1. /*
  2. * This is where we statically allocate and initialize the initial
  3. * task.
  4. *
  5. * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co
  6. * David Mosberger-Tang <davidm@hpl.hp.com>
  7. */
  8. #include <linux/init.h>
  9. #include <linux/mm.h>
  10. #include <linux/fs.h>
  11. #include <linux/module.h>
  12. #include <linux/sched.h>
  13. #include <linux/init_task.h>
  14. #include <linux/mqueue.h>
  15. #include <asm/uaccess.h>
  16. #include <asm/pgtable.h>
  17. static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
  18. static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
  19. /*
  20. * Initial task structure.
  21. *
  22. * We need to make sure that this is properly aligned due to the way process stacks are
  23. * handled. This is done by having a special ".data..init_task" section...
  24. */
  25. #define init_thread_info init_task_mem.s.thread_info
  26. union {
  27. struct {
  28. struct task_struct task;
  29. struct thread_info thread_info;
  30. } s;
  31. unsigned long stack[KERNEL_STACK_SIZE/sizeof (unsigned long)];
  32. } init_task_mem asm ("init_task") __init_task_data =
  33. {{
  34. .task = INIT_TASK(init_task_mem.s.task),
  35. .thread_info = INIT_THREAD_INFO(init_task_mem.s.task)
  36. }};
  37. EXPORT_SYMBOL(init_task);