init_task.c 1.1 KB

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  1. #include <linux/mm.h>
  2. #include <linux/module.h>
  3. #include <linux/sched.h>
  4. #include <linux/init_task.h>
  5. #include <linux/fs.h>
  6. #include <linux/mqueue.h>
  7. #include <asm/thread_info.h>
  8. #include <asm/uaccess.h>
  9. #include <asm/pgtable.h>
  10. static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
  11. static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
  12. struct mm_struct init_mm = INIT_MM(init_mm);
  13. EXPORT_SYMBOL(init_mm);
  14. /*
  15. * Initial thread structure.
  16. *
  17. * We need to make sure that this is 8192-byte aligned due to the
  18. * way process stacks are handled. This is done by making sure
  19. * the linker maps this in the .text segment right after head.S,
  20. * and making head.S ensure the proper alignment.
  21. *
  22. * The things we do for performance..
  23. */
  24. union thread_union init_thread_union
  25. __attribute__((__section__(".data.init_task"),
  26. __aligned__(THREAD_SIZE))) =
  27. { INIT_THREAD_INFO(init_task) };
  28. /*
  29. * Initial task structure.
  30. *
  31. * All other task structs will be allocated on slabs in fork.c
  32. */
  33. struct task_struct init_task = INIT_TASK(init_task);
  34. EXPORT_SYMBOL(init_task);