1 #ifndef __S390_VDSO_H__ 2 #define __S390_VDSO_H__ 3 4 /* Default link addresses for the vDSOs */ 5 #define VDSO32_LBASE 0 6 #define VDSO64_LBASE 0 7 8 #define VDSO_VERSION_STRING LINUX_2.6.29 9 10 #ifndef __ASSEMBLY__ 11 12 /* 13 * Note about the vdso_data and vdso_per_cpu_data structures: 14 * 15 * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the 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 */ 29 __u32 ectg_available; 30 __u32 ntp_mult; /* NTP adjusted multiplier 0x3C */ 31 }; 32 33 struct vdso_per_cpu_data { 34 __u64 ectg_timer_base; 35 __u64 ectg_user_time; 36 }; 37 38 extern struct vdso_data *vdso_data; 39 40 #ifdef CONFIG_64BIT 41 int vdso_alloc_per_cpu(struct _lowcore *lowcore); 42 void vdso_free_per_cpu(struct _lowcore *lowcore); 43 #endif 44 45 #endif /* __ASSEMBLY__ */ 46 #endif /* __S390_VDSO_H__ */ 47