STRUCT TK_FAST(9)

🕰️ struct tk_fast(9) 🕰️

okay so bestie, welcome to the <strong>Kernel API Manual</strong> entry for <strong><code>struct tk_fast(9)</code></strong> — the NMI safe timekeeper — and she is literally main character energy 💅✨

🌸 NAME 🌸

struct tk_fast - NMI safe timekeeper 💖

🦋 SYNOPSIS 🦋

struct tk_fast {
    seqcount_latch_t seq;
    struct tk_read_base     base[2];
 };

🎀 Members 🎀

• seq — Sequence counter for protecting updates. The lowest bit is the index for the tk_read_base array.
• base — tk_read_base array. Access is indexed by the lowest bit of seq.

💫 Description 💫

See update_fast_timekeeper below. That's the whole vibe, bestie 😌

🔮 SEE ALSO 🔮

Kernel file <code>./kernel/time/timekeeping.c</code> — plus the whole squad: tk_setup_internals(9), update_fast_timekeeper(9), ktime_get_mono_fast_ns(9), ktime_get_raw_fast_ns(9), ktime_get_boot_fast_ns(9), ktime_get_tai_fast_ns(9), ktime_get_real_fast_ns(9), halt_fast_timekeeper(9), pvclock_gtod_register_notifier(9), pvclock_gtod_unregister_notifier(9), timekeeping_forward_now(9), ktime_get_real_ts64(9), ktime_mono_to_any(9), ktime_get_raw(9), ktime_get_ts64(9), ktime_get_seconds(9), ktime_get_real_seconds(9), __ktime_get_real_seconds(9), ktime_get_snapshot_id(9), adjust_historical_crosststamp(9), ktime_real_to_base_clock(9), get_device_system_crosststamp(9), timekeeping_clocksource_has_base(9), do_settimeofday64(9), __timekeeping_inject_offset(9), timekeeping_notify(9), ktime_get_raw_ts64(9), timekeeping_valid_for_hres(9), timekeeping_max_deferment(9), read_persistent_clock64(9), read_persistent_wall_and_boot_offset(9), __timekeeping_inject_sleeptime(9), timekeeping_inject_sleeptime64(9), timekeeping_resume(9), update_wall_time(9), getboottime64(9), ktime_get_coarse_real_ts64_mg(9), ktime_get_real_ts64_mg(9), ktime_get_update_offsets_now(9), random_get_entropy_fallback(9), do_adjtimex(9), hardpps(9), ktime_get_aux(9), ktime_get_aux_ts64(9)

source/version: ./kernel/time 💖 — date: October 2026 🌸 — page: struct tk_fast(9) 👑. byeeee bestie, slay responsibly ✨💅