/* SPDX-License-Identifier: GPL-2.0-only */ /* * Adapted from arm64 version. * * Copyright (C) 2012 ARM Limited */ #ifndef __ASM_VDSO_DATAPAGE_H #define __ASM_VDSO_DATAPAGE_H #ifdef __KERNEL__ #ifndef __ASSEMBLY__ #include <asm/page.h> /* Try to be cache-friendly on systems that don't implement the * generic timer: fit the unconditionally updated fields in the first * 32 bytes. */ struct vdso_data { u32 seq_count; /* sequence count - odd during updates */ u16 tk_is_cntvct; /* fall back to syscall if false */ u16 cs_shift; /* clocksource shift */ u32 xtime_coarse_sec; /* coarse time */ u32 xtime_coarse_nsec; u32 wtm_clock_sec; /* wall to monotonic offset */ u32 wtm_clock_nsec; u32 xtime_clock_sec; /* CLOCK_REALTIME - seconds */ u32 cs_mult; /* clocksource multiplier */ u64 cs_cycle_last; /* last cycle value */ u64 cs_mask; /* clocksource mask */ u64 xtime_clock_snsec; /* CLOCK_REALTIME sub-ns base */ u32 tz_minuteswest; /* timezone info for gettimeofday(2) */ u32 tz_dsttime; }; union vdso_data_store { struct vdso_data data; u8 page[PAGE_SIZE]; }; #endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* __ASM_VDSO_DATAPAGE_H */