gettimeofday.h (1515B)
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#include <asm/syscall.h> 10#include <asm/timex.h> 11#include <asm/unistd.h> 12#include <linux/compiler.h> 13 14#define vdso_calc_delta __arch_vdso_calc_delta 15static __always_inline u64 __arch_vdso_calc_delta(u64 cycles, u64 last, u64 mask, u32 mult) 16{ 17 return (cycles - last) * mult; 18} 19 20static __always_inline const struct vdso_data *__arch_get_vdso_data(void) 21{ 22 return _vdso_data; 23} 24 25static inline u64 __arch_get_hw_counter(s32 clock_mode, const struct vdso_data *vd) 26{ 27 u64 adj, now; 28 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); 33 return now; 34} 35 36static __always_inline 37long clock_gettime_fallback(clockid_t clkid, struct __kernel_timespec *ts) 38{ 39 return syscall2(__NR_clock_gettime, (long)clkid, (long)ts); 40} 41 42static __always_inline 43long gettimeofday_fallback(register struct __kernel_old_timeval *tv, 44 register struct timezone *tz) 45{ 46 return syscall2(__NR_gettimeofday, (long)tv, (long)tz); 47} 48 49static __always_inline 50long clock_getres_fallback(clockid_t clkid, struct __kernel_timespec *ts) 51{ 52 return syscall2(__NR_clock_getres, (long)clkid, (long)ts); 53} 54 55#ifdef CONFIG_TIME_NS 56static __always_inline 57const struct vdso_data *__arch_get_timens_vdso_data(const struct vdso_data *vd) 58{ 59 return _timens_data; 60} 61#endif 62 63#endif