/arch/x86/include/asm/vsyscall.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35 · C++ Header · 44 lines · 31 code · 11 blank · 2 comment · 0 complexity · 9bb866064e07deae1ff46aaf9b4f01ae MD5 · raw file 

    

  1. #ifndef _ASM_X86_VSYSCALL_H
    2. 

  2. #define _ASM_X86_VSYSCALL_H
    3. 

  3. 

  4. enum vsyscall_num {
    5. 

  5. 	__NR_vgettimeofday,
    6. 

  6. 	__NR_vtime,
    7. 

  7. 	__NR_vgetcpu,
    8. 

  8. };
    9. 

  9. 

  10. #define VSYSCALL_START (-10UL << 20)
    11. 

  11. #define VSYSCALL_SIZE 1024
    12. 

  12. #define VSYSCALL_END (-2UL << 20)
    13. 

  13. #define VSYSCALL_MAPPED_PAGES 1
    14. 

  14. #define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
    15. 

  15. 

  16. #ifdef __KERNEL__
    17. 

  17. #include <linux/seqlock.h>
    18. 

  18. 

  19. #define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16)))
    20. 

  20. #define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))
    21. 

  21. 

  22. /* Definitions for CONFIG_GENERIC_TIME definitions */
    23. 

  23. #define __section_vsyscall_gtod_data __attribute__ \
    24. 

  24. 	((unused, __section__ (".vsyscall_gtod_data"),aligned(16)))
    25. 

  25. #define __section_vsyscall_clock __attribute__ \
    26. 

  26. 	((unused, __section__ (".vsyscall_clock"),aligned(16)))
    27. 

  27. #define __vsyscall_fn \
    28. 

  28. 	__attribute__ ((unused, __section__(".vsyscall_fn"))) notrace
    29. 

  29. 

  30. #define VGETCPU_RDTSCP	1
    31. 

  31. #define VGETCPU_LSL	2
    32. 

  32. 

  33. extern int __vgetcpu_mode;
    34. 

  34. extern volatile unsigned long __jiffies;
    35. 

  35. 

  36. /* kernel space (writeable) */
    37. 

  37. extern int vgetcpu_mode;
    38. 

  38. extern struct timezone sys_tz;
    39. 

  39. 

  40. extern void map_vsyscall(void);
    41. 

  41. 

  42. #endif /* __KERNEL__ */
    43. 

  43. 

  44. #endif /* _ASM_X86_VSYSCALL_H */
    45.