trace_hrtimer_setup(9)

💫 trace_hrtimer_setup(9) 💫

okay so this is a page straight out of the Kernel API Manual — it's trace_hrtimer_setup(9), and yes bestie, we're getting into hrtimer tracepoint territory 🎀

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✨ NAME ✨

trace_hrtimer_setup — literally called when the hrtimer is initialized 🕐✨

Like, the moment an hrtimer wakes up and gets its whole setup done, this tracepoint fires. iconic behavior honestly.

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🦋 SYNOPSIS 🦋

void trace_hrtimer_setup (struct hrtimer *hrtimer , clockid_t clockid ,
       enum hrtimer_mode mode );

no cap, that's the whole signature — void return, three args, very demure, very mindful 💅

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🌸 ARGUMENTS 🌸

• hrtimer — pointer to struct hrtimer. it's giving "the actual timer object", the main character of this whole function 🫶
• clockid — the hrtimer's clock. yep, the clock id it's running on ⏰
• mode — the hrtimer's mode. the vibe check of how this timer operates, iykyk 🌈

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👑 SEE ALSO 👑

kernel file ./include/trace/events/timer.h — go look, it's all there in the flesh 📂✨

and then the whole friend group of trace buddies:

• trace_timer_init(9)
• trace_timer_start(9)
• trace_timer_expire_entry(9)
• trace_timer_expire_exit(9)
• trace_timer_cancel(9)
• trace_hrtimer_start(9)
• trace_hrtimer_expire_entry(9)
• trace_hrtimer_start_expired(9)
• trace_hrtimer_expire_exit(9)
• trace_hrtimer_cancel(9)
• trace_hrtimer_rearm(9)
• trace_itimer_state(9)
• trace_itimer_expire(9)

like, it's a whole squad fr fr 💀💖

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and that's the whole page, bestie — no hidden options, no sneaky defaults, just a tracepoint doing its thing. slay. 💅

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🎀 cute little sign-off: this one lives in ./include/trace/events, dated October 2026, and it's still called trace_hrtimer_setup(9) — periodt. 🦋💜