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63 lines
1.5 KiB
63 lines
1.5 KiB
/* 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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