jiffies_to_usecs(9)

✨ jiffies_to_usecs ✨

okay so this is a page from the Kernel API Manual (the 9 girlies know 💅) and it's about turning jiffies into microseconds. tiny unit conversion, huge main character energy. let's go 🎀

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🌸 NAME 🌸

jiffies_to_usecs — convert jiffies to microseconds, bestie 💖

like literally just that. jiffies in, microseconds out. slay.

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🦋 SYNOPSIS 🦋

unsigned int jiffies_to_usecs (const unsigned long j );

yep that's the whole thing. one function, one argument, returns an unsigned int. no cap, that's it 🔥

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💜 ARGUMENTS 💜

• j — the jiffies value 🕐 like, the number of jiffies you're holding, and you want it in microseconds instead. const unsigned long, so it's not going anywhere, it's just chilling.

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⭐ RETURN ⭐

it hands you back a microseconds value ✨ that's the vibe check result. microseconds. not milliseconds, not nanoseconds, microseconds. iykyk 😌

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👑 SEE ALSO 👑

the kernel file lives at ./kernel/time/time.c and honestly the whole friend group is here, all the time-conversion girlies:

• jiffies_to_msecs(9)
• mktime64(9)
• set_normalized_timespec64(9)
• ns_to_timespec64(9)
• __msecs_to_jiffies(9)
• __usecs_to_jiffies(9)
• timespec64_to_jiffies(9)
• jiffies_to_timespec64(9)
• jiffies_to_clock_t(9)
• clock_t_to_jiffies(9)
• jiffies_64_to_clock_t(9)
• nsec_to_clock_t(9)
• jiffies64_to_nsecs(9)
• jiffies64_to_msecs(9)
• nsecs_to_jiffies64(9)
• nsecs_to_jiffies(9)
• timespec64_add_safe(9)
• get_timespec64(9)
• put_timespec64(9)
• get_old_timespec32(9)
• put_old_timespec32(9)
• get_itimerspec64(9)
• put_itimerspec64(9)
• get_old_itimerspec32(9)
• put_old_itimerspec32(9)

like, the entire group chat 🫶 go read them, they're all iconic 🧚

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fr fr tho: if you need the reverse direction, __usecs_to_jiffies(9) is right there in the list. go get her 💅

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and that's the page!! brought to you by the ./kernel/time girlies, dated October 2026, and the page itself is literally named jiffies_to_usecs(9) — mwah, bye bestie 💖✨🎀🦋🌸