hrtimer_setup(9)

💅 hrtimer_setup(9) 💅

okay bestie, welcome to section 9 of the Kernel API Manual — yes we're in kernel space now, put your seatbelt on 🎢 this one's called hrtimer_setup(9) and it's literally the "get your timer ready" girlie.

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✨ NAME ✨

hrtimer_setup — initialize a timer to the given clock ⏰

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🌸 SYNOPSIS 🌸

void hrtimer_setup (struct hrtimer *timer , enum hrtimer_restart
(*function)(struct hrtimer *) , clockid_t clock_id , enum hrtimer_mode
mode );

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🎀 ARGUMENTS 🎀

• timer — the timer to be initialized 🫶 this is the main character, the one getting set up
• function — the callback function, aka what runs when the timer goes off, no cap
• clock_id — the clock to be used, pick your timeline bestie 🕰️
• mode — the modes which are relevant for initialization:
  • HRTIMER_MODE_ABS
  • HRTIMER_MODE_REL
  • HRTIMER_MODE_ABS_SOFT
  • HRTIMER_MODE_REL_SOFT

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🦋 DESCRIPTION 🦋

so here's the tea ☕ the PINNED variants of the above can be handed in, but heads up — the PINNED bit is ignored, because pinning actually happens when the hrtimer is started. not at setup. periodt 💅 don't come for me, that's just how it is.

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🌈 SEE ALSO 🌈

Kernel file ./kernel/time/hrtimer.c and its whole friend group:

• hrtimer_update_function(9)
• hrtimer_forward(9)
• hrtimer_start_range_ns(9)
• hrtimer_start_range_ns_user(9)
• hrtimer_try_to_cancel(9)
• hrtimer_cancel(9)
• __hrtimer_get_remaining(9)
• hrtimer_get_next_event(9)
• hrtimer_next_event_without(9)
• hrtimer_setup_on_stack(9)
• hrtimer_sleeper_start_expires(9)
• hrtimer_setup_sleeper_on_stack(9)

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okay that's the whole page, you ate that 💖 this lil' drop came from ./kernel/time, dated October 2026 — mwah, see u in the next manpage bestie 🧚✨👑