init_task.c 1.2 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 fs_struct init_fs = INIT_FS;
  11. static struct files_struct init_files = INIT_FILES;
  12. static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
  13. static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
  14. struct mm_struct init_mm = INIT_MM(init_mm);
  15. EXPORT_SYMBOL(init_mm);
  16. /*
  17. * Initial thread structure.
  18. *
  19. * We need to make sure that this is 8192-byte aligned due to the
  20. * way process stacks are handled. This is done by making sure
  21. * the linker maps this in the .text segment right after head.S,
  22. * and making head.S ensure the proper alignment.
  23. *
  24. * The things we do for performance..
  25. */
  26. union thread_union init_thread_union
  27. __attribute__((__section__(".data.init_task"),
  28. __aligned__(THREAD_SIZE))) =
  29. { INIT_THREAD_INFO(init_task) };
  30. /*
  31. * Initial task structure.
  32. *
  33. * All other task structs will be allocated on slabs in fork.c
  34. */
  35. struct task_struct init_task = INIT_TASK(init_task);
  36. EXPORT_SYMBOL(init_task);