clockevents_switch_state(9)

✨ clockevents_switch_state — bestie's guide to clock event device states ✨

okay so this is clockevents_switch_state from the Kernel API Manual (section 9, kernel-space tea 🫖). Yes it's a kernel function. Yes it's gonna be fun. Let's go 💅

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🌸 NAME 🌸

clockevents_switch_state — sets the operating state of a clock event device. that's it, that's the whole vibe. it flips the state, you move on with your life ✨

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🦋 SYNOPSIS 🦋

void clockevents_switch_state (struct clock_event_device *dev , enum clock_event_state state );

literally the whole signature, copy it exactly, don't @ me 🙈

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🎀 ARGUMENTS 🎀

• dev — the device to modify 💖 like, the clock event device you're messing with. it's the main character here.
• state — the new state 🌈 the state you want dev to be in afterwards. icon behavior.

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💜 DESCRIPTION 💜

okay so here's the thing, and i need you to actually hear me on this:

Must be called with interrupts disabled !

like, capital-M Must. interrupts. disabled. no cap. if you call this without interrupts disabled you are not slaying, you are simply not slaying 😭

that's the whole description, she's short and she's serious 🫶

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⭐ SEE ALSO ⭐

the full friend group, all of them, in order, no one gets left out 👑

• Kernel file ./kernel/time/clockevents.c
• clockevent_delta2ns(9)
• clockevents_shutdown(9)
• clockevents_tick_resume(9)
• clockevents_increase_min_delta(9)
• clockevents_program_min_delta(9)
• clockevents_program_min_delta(9) — yes she's listed twice, she's just that iconic, i don't make the rules 💀
• clockevents_program_event(9)
• clockevents_register_device(9)
• clockevents_config_and_register(9)
• clockevents_update_freq(9)
• clockevents_exchange_device(9)
• clockevents_suspend(9)
• clockevents_resume(9)
• tick_offline_cpu(9)

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🧚 tiny reminder before you go: interrupts disabled. that's the whole personality of this function. do not forget the interrupts. i'm begging 🙏

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and that's the page bestie!! this one lives in ./kernel/time, dated October 2026 — mwah, love that for us 💖✨🎀 see you in the next man page, bye!! 🦋🌸💅