rtc_timer_do_work(9)

✨ rtc_timer_do_work — the Kernel API Manual glow-up ✨

okay bestie, welcome to the Kernel API Manual corner of the universe 💅 this one's a function page, it's short, it's sweet, and it is literally the reason your RTC alarms fire on time instead of just vibing forever. let's get into it 🫶

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🌸 NAME 🌸

rtc_timer_do_work — Expires rtc timers. that's the whole job description. it expires them. iconic behavior honestly 👑

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🎀 SYNOPSIS 🎀

void rtc_timer_do_work (struct work_struct *work );

returns void, takes exactly one pointer, no notes. lowkey minimalist queen 🦋

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💖 ARGUMENTS 💖

• work — the work item 🧚 that's it, that's the parameter. it's the work item. it showed up to work. give it a little respect.

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🔥 DESCRIPTION 🔥

so what does it do. Expires rtc timers. periodt 💀 and if that's not enough drama for you — it also reprograms the next alarm event if needed, so the next one's already queued up before you even notice 🌈

it gets called via worktask. no cap, that's the entry point, that's how it slides into the main character slot ✨

and the safety girlie moment: it serializes access to the timerqueue via the ops_lock mutex 🔒 meaning nobody's touching that timerqueue while this one's in it. no chaos, no collisions, just clean locked-down access, we love to see it 🎀

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👑 SEE ALSO 👑

the kernel file lives at ./drivers/rtc/interface.c 📁 and here's the whole friend group, all of them, no gatekeeping:

• rtc_read_next_alarm(9)
• rtc_handle_legacy_irq(9)
• rtc_aie_update_irq(9)
• rtc_uie_update_irq(9)
• rtc_pie_update_irq(9)
• rtc_update_irq(9)
• rtc_irq_set_state(9)
• rtc_irq_set_freq(9)
• rtc_timer_enqueue(9)
• rtc_timer_remove(9)
• rtc_read_offset(9)
• rtc_set_offset(9)

iykyk 😌 go read them, they're all slay in their own way 💜

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ngl this page is short but it's doing a LOT of heavy lifting behind the scenes. respect the timer expiry grind 🔥

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and that's the tea, bestie 🍓 this page comes straight from ./drivers/rtc, dated October 2026 — mwah, catch you in the next manpage 💋✨🦋