trace_itimer_state(9)

✨ trace_itimer_state ✨

okay so bestie, you're looking at the trace_itimer_state(9) page from the Kernel API Manual — and honestly? she's a little icon. this is the function that gets called when an itimer is started or canceled. that's the whole vibe. periodt. 💅

🎀 SYNOPSIS 🎀

like, here's the signature, copy it exactly bestie, no cap:

void trace_itimer_state (int which , const struct itimerspec64 *const
       value , unsigned long long expires );

three args, zero drama. 🔥

🌸 ARGUMENTS 🌸

• which — the name of the interval timer. that's it, that's the whole thing, she just tells you which timer we're talking about 🦋
• value — the itimers value, mmkay? and here's the important part, so like, pay attention: the itimer is canceled if value->it_value is zero, otherwise it is started. literally the whole plot twist lives in that one field 😭
• expires — the itimers expiry time. when it's gonna pop off. ⏰

💜 SEE ALSO 💜

the kernel file lives at ./include/trace/events/timer.h and she's got a whole friend group, iykyk:

• trace_timer_init(9)
• trace_timer_start(9)
• trace_timer_expire_entry(9)
• trace_timer_expire_exit(9)
• trace_timer_cancel(9)
• trace_hrtimer_setup(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_expire(9)

go say hi to all of them, they're iconic 👑

bestie this page is dated October 2026, sourced from ./include/trace/events, and you can find her filed under trace_itimer_state(9). mwah, study safe, drink water, and don't forget to actually read the timer headers 💖🧚🌸