64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef ASM_VDSO_GETTIMEOFDAY_H
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#define ASM_VDSO_GETTIMEOFDAY_H
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#define VDSO_HAS_TIME 1
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#define VDSO_HAS_CLOCK_GETRES 1
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#include <asm/syscall.h>
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#include <asm/timex.h>
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#include <asm/unistd.h>
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#include <linux/compiler.h>
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#define vdso_calc_delta __arch_vdso_calc_delta
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static __always_inline u64 __arch_vdso_calc_delta(u64 cycles, u64 last, u64 mask, u32 mult)
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{
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return (cycles - last) * mult;
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}
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static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
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{
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return _vdso_data;
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}
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static inline u64 __arch_get_hw_counter(s32 clock_mode, const struct vdso_data *vd)
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{
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u64 adj, now;
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now = get_tod_clock();
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adj = vd->arch_data.tod_steering_end - now;
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if (unlikely((s64) adj > 0))
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now += (vd->arch_data.tod_steering_delta < 0) ? (adj >> 15) : -(adj >> 15);
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return now;
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}
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static __always_inline
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long clock_gettime_fallback(clockid_t clkid, struct __kernel_timespec *ts)
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{
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return syscall2(__NR_clock_gettime, (long)clkid, (long)ts);
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}
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static __always_inline
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long gettimeofday_fallback(register struct __kernel_old_timeval *tv,
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register struct timezone *tz)
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{
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return syscall2(__NR_gettimeofday, (long)tv, (long)tz);
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}
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static __always_inline
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long clock_getres_fallback(clockid_t clkid, struct __kernel_timespec *ts)
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{
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return syscall2(__NR_clock_getres, (long)clkid, (long)ts);
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}
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#ifdef CONFIG_TIME_NS
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static __always_inline
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const struct vdso_data *__arch_get_timens_vdso_data(const struct vdso_data *vd)
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{
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return _timens_data;
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}
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#endif
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#endif
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