1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef ASM_VDSO_GETTIMEOFDAY_H
3 #define ASM_VDSO_GETTIMEOFDAY_H
5 #define VDSO_HAS_TIME 1
7 #define VDSO_HAS_CLOCK_GETRES 1
9 #include <asm/syscall.h>
10 #include <asm/timex.h>
11 #include <asm/unistd.h>
12 #include <linux/compiler.h>
14 #define vdso_calc_delta __arch_vdso_calc_delta
15 static __always_inline u64 __arch_vdso_calc_delta(u64 cycles, u64 last, u64 mask, u32 mult)
17 return (cycles - last) * mult;
20 static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
25 static inline u64 __arch_get_hw_counter(s32 clock_mode, const struct vdso_data *vd)
29 now = get_tod_clock();
30 adj = vd->arch_data.tod_steering_end - now;
31 if (unlikely((s64) adj > 0))
32 now += (vd->arch_data.tod_steering_delta < 0) ? (adj >> 15) : -(adj >> 15);
36 static __always_inline
37 long clock_gettime_fallback(clockid_t clkid, struct __kernel_timespec *ts)
39 return syscall2(__NR_clock_gettime, (long)clkid, (long)ts);
42 static __always_inline
43 long gettimeofday_fallback(register struct __kernel_old_timeval *tv,
44 register struct timezone *tz)
46 return syscall2(__NR_gettimeofday, (long)tv, (long)tz);
49 static __always_inline
50 long clock_getres_fallback(clockid_t clkid, struct __kernel_timespec *ts)
52 return syscall2(__NR_clock_getres, (long)clkid, (long)ts);
56 static __always_inline
57 const struct vdso_data *__arch_get_timens_vdso_data(const struct vdso_data *vd)