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_2.6.29 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 22struct 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 __u32 ntp_mult; /* NTP adjusted multiplier 0x3C */ 33}; 34 35struct vdso_per_cpu_data { 36 __u64 ectg_timer_base; 37 __u64 ectg_user_time; 38}; 39 40extern struct vdso_data *vdso_data; 41 42#ifdef CONFIG_64BIT 43int vdso_alloc_per_cpu(int cpu, struct _lowcore *lowcore); 44void vdso_free_per_cpu(int cpu, struct _lowcore *lowcore); 45#endif 46 47#endif /* __ASSEMBLY__ */ 48 49#endif /* __KERNEL__ */ 50 51#endif /* __S390_VDSO_H__ */ 52