get_jiffies_64(9)

💖 get_jiffies_64 💖

okay so this is the Kernel API Manual page for get_jiffies_64(9), and bestie, it is short, it is iconic, and it does exactly one little job. let’s get into it 🫶

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✨ NAME ✨

get_jiffies_64 — read the 64-bit non-atomic jiffies_64 value. that’s the whole name, no cap 💅

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🌸 SYNOPSIS 🌸

u64 get_jiffies_64 (void );

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🎀 ARGUMENTS 🎀

• void — no arguments. literally none. zero. the void is voiding 😌

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💅 DESCRIPTION 💅

When BITS_PER_LONG < 64, this uses sequence number sampling using jiffies_lock to protect the 64-bit read.

that’s the vibe: sequence number sampling, jiffies_lock, and a protected 64-bit read when BITS_PER_LONG < 64. fr fr 🧚

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🦋 RETURN 🦋

current 64-bit jiffies value. that’s the return, bestie — the current 64-bit jiffies value ✨

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👑 SEE ALSO 👑

• Kernel file ./include/linux/jiffies.h
• 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)
• jiffies_to_nsecs(9)
• msecs_to_jiffies(9)
• secs_to_jiffies(9)
• usecs_to_jiffies(9)

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mwah 💋 this page is serving source ./include/linux, dated October 2026, for get_jiffies_64(9) in the Kernel API Manual — and yes, that’s the cute little sign-off, periodt 🌈