add_timer_on(9)

💅 add_timer_on — like, the Kernel API Manual page, bestie

okay so real talk, this one is from the Kernel API Manual, section 9, and it's called add_timer_on. Buckle up, it's short but she's important.

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✨ NAME ✨

add_timer_on — start a timer on a particular CPU 👑

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🎀 SYNOPSIS 🎀

void add_timer_on (struct timer_list *timer , int cpu );

literally two args, no drama, we love a minimal signature 🫶

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🌸 ARGUMENTS 🌸

• timer — the timer you wanna start, babes. that's the one.
• cpu — the CPU you want it started on. yes, that CPU. pick one. 🎯

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🦋 DESCRIPTION 🦋

Okay so it's the same as add_timer, except — and this is the whole vibe — it starts the timer on the given CPU and the TIMER_PINNED flag gets set. Pinned, like, it's committed to that CPU. main character energy, no wandering off. 💅

But heads up 🫶 when the timer shouldn't be a pinned timer in the next round, you should use add_timer_global instead, because that one unsets the TIMER_PINNED flag. so like, don't leave it pinned forever unless you meant to, yk? 🙈

For further details, go peek at add_timer — she's got the lore.

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🔥 SEE ALSO 🔥

okay the full squad, no gatekeeping:

• Kernel file ./kernel/time/timer.c
• struct timer_base(9)
• __round_jiffies_relative(9)
• round_jiffies(9)
• round_jiffies_relative(9)
• __round_jiffies_up_relative(9)
• round_jiffies_up(9)
• round_jiffies_up_relative(9)
• timer_init_key(9)
• mod_timer_pending(9)
• mod_timer(9)
• timer_reduce(9)
• add_timer(9)
• add_timer_local(9)
• add_timer_global(9)
• __timer_delete(9)
• timer_delete(9)
• timer_shutdown(9)
• __try_to_del_timer_sync(9)
• timer_delete_sync_try(9)
• __timer_delete_sync(9)
• timer_delete_sync(9)
• timer_shutdown_sync(9)
• fetch_next_timer_interrupt_remote(9)
• timer_unlock_remote_bases(9)
• timer_lock_remote_bases(9)
• timer_base_is_idle(9)
• timer_expire_remote(9)
• get_next_timer_interrupt(9)
• timer_base_try_to_set_idle(9)
• timer_clear_idle(9)
• __run_timers(9)

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💖 reminder: TIMER_PINNED gets set by this one. if you don't want that in the next round, reach for add_timer_global(9). iykyk 💀

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and that's the whole page, bestie! 🌈 this cutie lives in ./kernel/time and it was dated October 2026 — so yeah, future icon behavior 👑✨ slay responsibly 🎀