__usecs_to_jiffies(9)

💅 __usecs_to_jiffies — the manual page, but make it make sense

okay bestie, so this is a page out of the Kernel API Manual — section 9, kernel territory, very main character energy. The function is called __usecs_to_jiffies and yes, those two underscores up front are part of the name, do not come for them 💅

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✨ NAME ✨

__usecs_to_jiffies — convert microseconds to jiffies 🎀

That's it. That's the whole job. Glow-up complete.

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🦋 SYNOPSIS 🦋

unsigned long __usecs_to_jiffies (const unsigned int u );

Look at that signature. unsigned long coming back out, const unsigned int going in. Respect the types, they're literally doing so much work here 🫶

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🌸 ARGUMENTS 🌸

• u — the page describes this one as time in milliseconds. Bestie, I know, I know 😭 the function is out here calling itself usecs and the argument label says milliseconds — that's genuinely what this page says, so I'm passing it to you exactly as written. No cap, no edits, no "fixing". Ship it as documented. 🙈

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⭐ RETURN ⭐

The jiffies value. That's the whole vibe check result. ✨

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👑 SEE ALSO 👑

This list is long, like, iconic levels of long, and every single one of these is going in because we do not leave our sisters behind 💜

• Kernel file ./kernel/time/time.c

and then, in no particular order because I'm listing them all, periodt:

• jiffies_to_msecs(9)
• jiffies_to_usecs(9)
• mktime64(9)
• set_normalized_timespec64(9)
• ns_to_timespec64(9)
• __msecs_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 okay time-conversion family reunion, we love to see it 🌈

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ngl bestie, there are no OPTIONS, no ENVIRONMENT, no EXIT STATUS, no warnings and no bugs listed on this page. It's a short one. Read it, use it, move on 💖

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🍓 that's the whole page, mwah, go convert some microseconds, iykyk 🍓

cute little sign-off: this one lives in the source tree at ./kernel/time, it's dated October 2026, and it goes out under the title __usecs_to_jiffies(9) — slay 💅✨