timekeeping_...rce_has_base(9)

💅 timekeeping_...rce_has_base(9) — Kernel API Manual 💅

okay bestie, welcome to the Kernel API Manual page for timekeeping_clocksource_has_base() ✨ this is the little function that does a vibe check on clocksources.

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🌸 NAME 🌸

timekeeping_clocksource_has_base — check whether the current clocksource is based on given a base clock 🎀

✨ SYNOPSIS ✨

literally, here's the signature, no cap:

bool timekeeping_clocksource_has_base (enum clocksource_ids id );

🎀 ARGUMENTS 🎀

• id — the base clocksource ID you're asking about 🦋

💀 NOTE 💀

⚠️ big heads-up, bestie: the return value is a snapshot which can become invalid right after the function returns. so don't treat it like a forever lock 😭

🦋 RETURN 🦋

It gives you true if the timekeeper clocksource has a base clock with id, and false otherwise. periodt. 💅

🔥 SEE ALSO 🔥

the whole squad, in the order the page lists them — starting with the Kernel file ./kernel/time/timekeeping.c, then:

• struct tk_fast(9)
• 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)
• 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)

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mwah 💋 this one comes from ./kernel/time and it's dated October 2026 — catch you in the kernel, bestie 🫶