jiffies_to_nsecs(9)

💖 jiffies_to_nsecs(9) — Kernel API Manual 💖

okay so bestie, welcome to the Kernel API Manual, and today's main character is jiffies_to_nsecs(9). she's a little converter girlie and she's literally so good at her job 🎀

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✨ NAME ✨

jiffies_to_nsecs — Convert jiffies to nanoseconds 🦋

like, that's it. that's the whole vibe. jiffies in, nanoseconds out. slay 💅

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✨ SYNOPSIS ✨

u64 jiffies_to_nsecs (const unsigned long j );

yes bestie, that's the whole signature. she takes one (1) argument and gives you back a u64. no cap, no surprises, just math 🧚

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✨ ARGUMENTS ✨

• j — the jiffies value 🌸 like, the actual number of jiffies you wanna convert. that's it, that's the input, she's not asking for much.

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✨ RETURN ✨

the nanoseconds value ⭐ that's what you get back. u64 shaped, nanosecond flavored. obsessed.

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✨ SEE ALSO ✨

okay this list is long and honestly it's giving "group chat with everyone who's ever touched time in the kernel" 😭 but every single one of them is iconic and you should know them:

• get_jiffies_64(9)
• General information about time_* inlines(9)
• time_after(9)
• time_before(9)
• time_after_eq(9)
• time_before_eq(9)
• time_in_range(9)
• time_in_range_open(9)
• time_after64(9)
• time_before64(9)
• time_after_eq64(9)
• time_before_eq64(9)
• time_in_range64(9)
• time_is_before_jiffies(9)
• time_is_before_jiffies64(9)
• time_is_after_jiffies(9)
• time_is_after_jiffies64(9)
• time_is_before_eq_jiffies(9)
• time_is_before_eq_jiffies64(9)
• time_is_after_eq_jiffies(9)
• time_is_after_eq_jiffies64(9)
• jiffies_to_msecs(9)
• jiffies_to_usecs(9)
• msecs_to_jiffies(9)
• secs_to_jiffies(9)
• usecs_to_jiffies(9)

and yeah, she lives in the kernel file ./include/linux/jiffies.h 💜 so if you ever lose her, that's where she's at. iykyk.

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and that's the page bestie!! 🫶 this little drop comes to you from ./include/linux, dated October 2026, and it's literally called jiffies_to_nsecs(9) in case you forgot already (you didn't, you ate this). go convert some jiffies, you absolute icon 👑💖✨