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 xtime_coarse_sec; /* Coarse kernel time 0x20 */ 26 __u64 xtime_coarse_nsec; /* 0x28 */ 27 __u64 wtom_clock_sec; /* Wall to monotonic clock 0x30 */ 28 __u64 wtom_clock_nsec; /* 0x38 */ 29 __u64 wtom_coarse_sec; /* Coarse wall to monotonic 0x40 */ 30 __u64 wtom_coarse_nsec; /* 0x48 */ 31 __u32 tz_minuteswest; /* Minutes west of Greenwich 0x50 */ 32 __u32 tz_dsttime; /* Type of dst correction 0x54 */ 33 __u32 ectg_available; /* ECTG instruction present 0x58 */ 34 __u32 tk_mult; /* Mult. used for xtime_nsec 0x5c */ 35 __u32 tk_shift; /* Shift used for xtime_nsec 0x60 */ 36 }; 37 38 struct vdso_per_cpu_data { 39 __u64 ectg_timer_base; 40 __u64 ectg_user_time; 41 __u32 cpu_nr; 42 __u32 node_id; 43 }; 44 45 extern struct vdso_data *vdso_data; 46 47 int vdso_alloc_per_cpu(struct lowcore *lowcore); 48 void vdso_free_per_cpu(struct lowcore *lowcore); 49 50 #endif /* __ASSEMBLY__ */ 51 #endif /* __S390_VDSO_H__ */ 52