vdso.h 1.3 KB

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  1. #ifndef __S390_VDSO_H__
  2. #define __S390_VDSO_H__
  3. #ifdef __KERNEL__
  4. /* Default link addresses for the vDSOs */
  5. #define VDSO32_LBASE 0
  6. #define VDSO64_LBASE 0
  7. #define VDSO_VERSION_STRING LINUX_2.6.29
  8. #ifndef __ASSEMBLY__
  9. /*
  10. * Note about the vdso_data and vdso_per_cpu_data structures:
  11. *
  12. * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the
  13. * structure is supposed to be known only to the function in the vdso
  14. * itself and may change without notice.
  15. */
  16. struct vdso_data {
  17. __u64 tb_update_count; /* Timebase atomicity ctr 0x00 */
  18. __u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */
  19. __u64 xtime_clock_sec; /* Kernel time 0x10 */
  20. __u64 xtime_clock_nsec; /* 0x18 */
  21. __u64 wtom_clock_sec; /* Wall to monotonic clock 0x20 */
  22. __u64 wtom_clock_nsec; /* 0x28 */
  23. __u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */
  24. __u32 tz_dsttime; /* Type of dst correction 0x34 */
  25. __u32 ectg_available;
  26. __u32 ntp_mult; /* NTP adjusted multiplier 0x3C */
  27. };
  28. struct vdso_per_cpu_data {
  29. __u64 ectg_timer_base;
  30. __u64 ectg_user_time;
  31. };
  32. extern struct vdso_data *vdso_data;
  33. #ifdef CONFIG_64BIT
  34. int vdso_alloc_per_cpu(struct _lowcore *lowcore);
  35. void vdso_free_per_cpu(struct _lowcore *lowcore);
  36. #endif
  37. #endif /* __ASSEMBLY__ */
  38. #endif /* __KERNEL__ */
  39. #endif /* __S390_VDSO_H__ */