projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b020632e MS |
1 | #ifndef __S390_VDSO_H__ |
| 2 | #define __S390_VDSO_H__ | |
| 3 | ||
| b020632e MS |
4 | /* Default link addresses for the vDSOs */ |
| 5 | #define VDSO32_LBASE 0 | |
| 6 | #define VDSO64_LBASE 0 | |
| 7 | ||
| 13c6680a | 8 | #define VDSO_VERSION_STRING LINUX_2.6.29 |
| b020632e MS |
9 | |
| 10 | #ifndef __ASSEMBLY__ | |
| 11 | ||
| 12 | /* | |
| c742b31c | 13 | * Note about the vdso_data and vdso_per_cpu_data structures: |
| b020632e | 14 | * |
| c742b31c | 15 | * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the |
| b020632e MS |
16 | * structure is supposed to be known only to the function in the vdso |
| 17 | * itself and may change without notice. | |
| 18 | */ | |
| 19 | ||
| 20 | struct vdso_data { | |
| 21 | __u64 tb_update_count; /* Timebase atomicity ctr 0x00 */ | |
| 22 | __u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */ | |
| 23 | __u64 xtime_clock_sec; /* Kernel time 0x10 */ | |
| 24 | __u64 xtime_clock_nsec; /* 0x18 */ | |
| 25 | __u64 wtom_clock_sec; /* Wall to monotonic clock 0x20 */ | |
| 26 | __u64 wtom_clock_nsec; /* 0x28 */ | |
| 27 | __u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */ | |
| 28 | __u32 tz_dsttime; /* Type of dst correction 0x34 */ | |
| 79c74ecb MS |
29 | __u32 ectg_available; /* ECTG instruction present 0x38 */ |
| 30 | __u32 tk_mult; /* Mult. used for xtime_nsec 0x3c */ | |
| 31 | __u32 tk_shift; /* Shift used for xtime_nsec 0x40 */ | |
| c742b31c MS |
32 | }; |
| 33 | ||
| 34 | struct vdso_per_cpu_data { | |
| 35 | __u64 ectg_timer_base; | |
| 36 | __u64 ectg_user_time; | |
| b020632e MS |
37 | }; |
| 38 | ||
| 39 | extern struct vdso_data *vdso_data; | |
| 40 | ||
| c742b31c | 41 | #ifdef CONFIG_64BIT |
| 8b646bd7 MS |
42 | int vdso_alloc_per_cpu(struct _lowcore *lowcore); |
| 43 | void vdso_free_per_cpu(struct _lowcore *lowcore); | |
| c742b31c MS |
44 | #endif |
| 45 | ||
| b020632e | 46 | #endif /* __ASSEMBLY__ */ |
| b020632e | 47 | #endif /* __S390_VDSO_H__ */ |