round_jiffies_relative(9)

💫 round_jiffies_relative 💫

okay so bestie, welcome to the round_jiffies_relative(9) page — straight out of the Kernel API Manual, no cap. this is the function that rounds jiffies to a full second and honestly? it's giving quiet luxury. ✨

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🌸 SYNOPSIS 🌸

unsigned long round_jiffies_relative (unsigned long j );

like, that's the whole signature. short, sweet, iconic. 💅

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🎀 ARGUMENTS 🎀

• j — the time in (relative) jiffies that should be rounded. that's it, that's the whole argument, and it's lowkey carrying the entire function. 🫶

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🦋 DESCRIPTION 🦋

okay so here's the vibe: round_jiffies_relative takes a time delta in the future (measured in jiffies) and rounds it up or down to (approximately) full seconds. yes bestie, approximately — she's not a perfectionist, she's a vibe. 💖

why would you even want that? literally because it's useful for timers where the exact moment they fire does not matter too much — as long as they fire approximately every X seconds. that's the whole assignment. 🎯

and here's the slay: by rounding all these timers to whole seconds, all of them fire at the same time instead of being spread out at various random times. the goal of this is to have the CPU wake up less, which saves power. it's giving collective efficiency, it's giving sustainability, it's giving main character energy for your battery life. 🔋👑

the return value is the rounded version of the j parameter. that's it. no surprises, no plot twists, we love a consistent queen. ✨

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🌈 SEE ALSO 🌈

ngl this list is long — she has a whole extended universe. fr fr, go read these too:

• Kernel file ./kernel/time/timer.c struct timer_base(9)
• __round_jiffies_relative(9)
• round_jiffies(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)
• add_timer_on(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 bestie: this is ./kernel/time territory, October 2026 edition. iykyk. 🧚

okay that's the page!! go round those jiffies, save that power, and remember — you're doing amazing sweetie 💜🎀🌟