seqlock_init(9)

💅 seqlock_init(9) — like, the dynamic initializer for seqlock_t, bestie

okay so this is a page from the Kernel API Manual and it's honestly so chill. it's smol. it's cute. it's giving "one job and she does it." let's get into it ✨

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🌸 NAME 🌸

seqlock_init — the dynamic initializer for seqlock_t

like, you have a seqlock_t and it is not set up yet and you're like "omg what do i do" and then this function is right there. that's the whole vibe. 🎀

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✨ SYNOPSIS ✨

seqlock_init (sl );

yes that's it. that's the whole call. she's lowkey minimal.

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🫶 ARGUMENTS 🫶

• sl — Pointer to the seqlock_t instance. that's your lock, bestie. hand her over and she gets initialized. no cap. 💖

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🔥 SEE ALSO 🔥

okay so this is the part where the page just dumps the entire seqlock extended universe on you and honestly? iconic. the kernel file is ./include/linux/seqlock.h and here is literally everyone:

• seqcount_init(9)
• SEQCNT_ZERO(9)
• __read_seqcount_begin(9)
• raw_read_seqcount_begin(9)
• read_seqcount_begin(9)
• raw_read_seqcount(9)
• raw_seqcount_try_begin(9)
• raw_seqcount_begin(9)
• __read_seqcount_retry(9)
• read_seqcount_retry(9)
• raw_write_seqcount_begin(9)
• raw_write_seqcount_end(9)
• write_seqcount_begin_nested(9)
• write_seqcount_begin(9)
• write_seqcount_end(9)
• raw_write_seqcount_barrier(9)
• write_seqcount_invalidate(9)
• SEQCNT_LATCH_ZERO(9)
• seqcount_latch_init(9)
• raw_read_seqcount_latch(9)
• read_seqcount_latch(9)
• raw_read_seqcount_latch_retry(9)
• read_seqcount_latch_retry(9)
• raw_write_seqcount_latch(9)
• write_seqcount_latch_begin(9)
• write_seqcount_latch(9)
• write_seqcount_latch_end(9)
• DEFINE_SEQLOCK(9)
• read_seqbegin(9)
• read_seqretry(9)
• write_seqlock(9)
• write_sequnlock(9)
• write_seqlock_bh(9)
• write_sequnlock_bh(9)
• write_seqlock_irq(9)
• write_sequnlock_irq(9)
• write_seqlock_irqsave(9)
• write_sequnlock_irqrestore(9)
• read_seqlock_excl(9)
• read_sequnlock_excl(9)
• read_seqlock_excl_bh(9)
• read_sequnlock_excl_bh(9)
• read_seqlock_excl_irq(9)
• read_sequnlock_excl_irq(9)
• read_seqlock_excl_irqsave(9)
• read_sequnlock_excl_irqrestore(9)
• read_seqbegin_or_lock(9)
• need_seqretry(9)
• done_seqretry(9)
• read_seqbegin_or_lock_irqsave(9)
• done_seqretry_irqrestore(9)
• scoped_seqlock_read(9)

fr fr that's fifty-one entries. i counted. she did not come to play. 👑

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so yeah. that's seqlock_init. short page, big friend group. go init your lock, bestie, you got this 💜

later babes — this one's from ./include/linux, dated October 2026, and it's been real 🌈🦋