1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef ASM_VDSO_GETTIMEOFDAY_H 3 #define ASM_VDSO_GETTIMEOFDAY_H 4 5 #define VDSO_HAS_TIME 1 6 7 #define VDSO_HAS_CLOCK_GETRES 1 8 9 #define VDSO_DELTA_NOMASK 1 10 11 #include <asm/syscall.h> 12 #include <asm/timex.h> 13 #include <asm/unistd.h> 14 #include <linux/compiler.h> 15 16 __arch_get_vdso_data(void)17 static __always_inline const struct vdso_data *__arch_get_vdso_data(void) 18 { 19 return _vdso_data; 20 } 21 __arch_get_hw_counter(s32 clock_mode,const struct vdso_data * vd)22 static inline u64 __arch_get_hw_counter(s32 clock_mode, const struct vdso_data *vd) 23 { 24 u64 adj, now; 25 26 now = get_tod_clock(); 27 adj = vd->arch_data.tod_steering_end - now; 28 if (unlikely((s64) adj > 0)) 29 now += (vd->arch_data.tod_steering_delta < 0) ? (adj >> 15) : -(adj >> 15); 30 return now; 31 } 32 33 static __always_inline clock_gettime_fallback(clockid_t clkid,struct __kernel_timespec * ts)34 long clock_gettime_fallback(clockid_t clkid, struct __kernel_timespec *ts) 35 { 36 return syscall2(__NR_clock_gettime, (long)clkid, (long)ts); 37 } 38 39 static __always_inline gettimeofday_fallback(register struct __kernel_old_timeval * tv,register struct timezone * tz)40 long gettimeofday_fallback(register struct __kernel_old_timeval *tv, 41 register struct timezone *tz) 42 { 43 return syscall2(__NR_gettimeofday, (long)tv, (long)tz); 44 } 45 46 static __always_inline clock_getres_fallback(clockid_t clkid,struct __kernel_timespec * ts)47 long clock_getres_fallback(clockid_t clkid, struct __kernel_timespec *ts) 48 { 49 return syscall2(__NR_clock_getres, (long)clkid, (long)ts); 50 } 51 52 #ifdef CONFIG_TIME_NS 53 static __always_inline __arch_get_timens_vdso_data(const struct vdso_data * vd)54 const struct vdso_data *__arch_get_timens_vdso_data(const struct vdso_data *vd) 55 { 56 return _timens_data; 57 } 58 #endif 59 60 #endif 61