1 #ifndef __S390_VDSO_H__ 2 #define __S390_VDSO_H__ 3 4 #ifdef __KERNEL__ 5 6 /* Default link addresses for the vDSOs */ 7 #define VDSO32_LBASE 0 8 #define VDSO64_LBASE 0 9 10 #define VDSO_VERSION_STRING LINUX_2.6.26 11 12 #ifndef __ASSEMBLY__ 13 14 /* 15 * Note about the vdso_data and vdso_per_cpu_data structures: 16 * 17 * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the 18 * structure is supposed to be known only to the function in the vdso 19 * itself and may change without notice. 20 */ 21 22 struct vdso_data { 23 __u64 tb_update_count; /* Timebase atomicity ctr 0x00 */ 24 __u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */ 25 __u64 xtime_clock_sec; /* Kernel time 0x10 */ 26 __u64 xtime_clock_nsec; /* 0x18 */ 27 __u64 wtom_clock_sec; /* Wall to monotonic clock 0x20 */ 28 __u64 wtom_clock_nsec; /* 0x28 */ 29 __u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */ 30 __u32 tz_dsttime; /* Type of dst correction 0x34 */ 31 __u32 ectg_available; 32 }; 33 34 struct vdso_per_cpu_data { 35 __u64 ectg_timer_base; 36 __u64 ectg_user_time; 37 }; 38 39 extern struct vdso_data *vdso_data; 40 41 #ifdef CONFIG_64BIT 42 int vdso_alloc_per_cpu(int cpu, struct _lowcore *lowcore); 43 void vdso_free_per_cpu(int cpu, struct _lowcore *lowcore); 44 #endif 45 46 #endif /* __ASSEMBLY__ */ 47 48 #endif /* __KERNEL__ */ 49 50 #endif /* __S390_VDSO_H__ */ 51