raw_atomic_fetch_or(9)

💅 raw_atomic_fetch_or(9)

okay bestie, welcome to the Kernel API Manual page for the atomic bitwise-OR moment 💖 no cap, this one is lowkey iconic.

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🌸 NAME 🌸

raw_atomic_fetch_or — atomic bitwise OR with full ordering

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✨ SYNOPSIS ✨

int raw_atomic_fetch_or (int i , atomic_t *v );

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🎀 ARGUMENTS 🎀

• i — an int value. it's the bits you're bringing to the party ✨
• v — pointer to atomic_t. the atomic queen getting updated 🫶

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🦋 DESCRIPTION 🦋

so the vibe is: this atomically updates v to (v | i) with full ordering. like, bitwise OR, atomic, full ordering, the whole thing 💅

it's safe to use in noinstr code — but bestie, prefer atomic_fetch_or elsewhere, fr fr.

okay important little note: noinstr is the safe zone for this one; outside that, atomic_fetch_or is the preferred girlie 💖

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🌟 RETURN 🌟

returns the original value of v — the pre-update one, iykyk 😌

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💖 SEE ALSO 💖

the whole atomic cinematic universe pulled up 🌈 kernel file first, then the raw_atomic_* fam, then the raw_atomic64_* fam:

• kernel file: ./include/linux/atomic/atomic-arch-fallback.h
• raw_atomic_read(9)
• raw_atomic_read_acquire(9)
• raw_atomic_set(9)
• raw_atomic_set_release(9)
• raw_atomic_add(9)
• raw_atomic_add_return(9)
• raw_atomic_add_return_acquire(9)
• raw_atomic_add_return_release(9)
• raw_atomic_add_return_relaxed(9)
• raw_atomic_fetch_add(9)
• raw_atomic_fetch_add_acquire(9)
• raw_atomic_fetch_add_release(9)
• raw_atomic_fetch_add_relaxed(9)
• raw_atomic_sub(9)
• raw_atomic_sub_return(9)
• raw_atomic_sub_return_acquire(9)
• raw_atomic_sub_return_release(9)
• raw_atomic_sub_return_relaxed(9)
• raw_atomic_fetch_sub(9)
• raw_atomic_fetch_sub_acquire(9)
• raw_atomic_fetch_sub_release(9)
• raw_atomic_fetch_sub_relaxed(9)
• raw_atomic_inc(9)
• raw_atomic_inc_return(9)
• raw_atomic_inc_return_acquire(9)
• raw_atomic_inc_return_release(9)
• raw_atomic_inc_return_relaxed(9)
• raw_atomic_fetch_inc(9)
• raw_atomic_fetch_inc_acquire(9)
• raw_atomic_fetch_inc_release(9)
• raw_atomic_fetch_inc_relaxed(9)
• raw_atomic_dec(9)
• raw_atomic_dec_return(9)
• raw_atomic_dec_return_acquire(9)
• raw_atomic_dec_return_release(9)
• raw_atomic_dec_return_relaxed(9)
• raw_atomic_fetch_dec(9)
• raw_atomic_fetch_dec_acquire(9)
• raw_atomic_fetch_dec_release(9)
• raw_atomic_fetch_dec_relaxed(9)
• raw_atomic_and(9)
• raw_atomic_fetch_and(9)
• raw_atomic_fetch_and_acquire(9)
• raw_atomic_fetch_and_release(9)
• raw_atomic_fetch_and_relaxed(9)
• raw_atomic_andnot(9)
• raw_atomic_fetch_andnot(9)
• raw_atomic_fetch_andnot_acquire(9)
• raw_atomic_fetch_andnot_release(9)
• raw_atomic_fetch_andnot_relaxed(9)
• raw_atomic_or(9)
• raw_atomic_fetch_or_acquire(9)
• raw_atomic_fetch_or_release(9)
• raw_atomic_fetch_or_relaxed(9)
• raw_atomic_xor(9)
• raw_atomic_fetch_xor(9)
• raw_atomic_fetch_xor_acquire(9)
• raw_atomic_fetch_xor_release(9)
• raw_atomic_fetch_xor_relaxed(9)
• raw_atomic_xchg(9)
• raw_atomic_xchg_acquire(9)
• raw_atomic_xchg_release(9)
• raw_atomic_xchg_relaxed(9)
• raw_atomic_cmpxchg(9)
• raw_atomic_cmpxchg_acquire(9)
• raw_atomic_cmpxchg_release(9)
• raw_atomic_cmpxchg_relaxed(9)
• raw_atomic_try_cmpxchg(9)
• raw_atomic_try_cmpxchg_acquire(9)
• raw_atomic_try_cmpxchg_release(9)
• raw_atomic_try_cmpxchg_relaxed(9)
• raw_atomic_sub_and_test(9)
• raw_atomic_dec_and_test(9)
• raw_atomic_inc_and_test(9)
• raw_atomic_add_negative(9)
• raw_atomic_add_negative_acquire(9)
• raw_atomic_add_negative_release(9)
• raw_atomic_add_negative_relaxed(9)
• raw_atomic_fetch_add_unless(9)
• raw_atomic_add_unless(9)
• raw_atomic_inc_not_zero(9)
• raw_atomic_inc_unless_negative(9)
• raw_atomic_dec_unless_positive(9)
• raw_atomic_dec_if_positive(9)
• raw_atomic64_read(9)
• raw_atomic64_read_acquire(9)
• raw_atomic64_set(9)
• raw_atomic64_set_release(9)
• raw_atomic64_add(9)
• raw_atomic64_add_return(9)
• raw_atomic64_add_return_acquire(9)
• raw_atomic64_add_return_release(9)
• raw_atomic64_add_return_relaxed(9)
• raw_atomic64_fetch_add(9)
• raw_atomic64_fetch_add_acquire(9)
• raw_atomic64_fetch_add_release(9)
• raw_atomic64_fetch_add_relaxed(9)
• raw_atomic64_sub(9)
• raw_atomic64_sub_return(9)
• raw_atomic64_sub_return_acquire(9)
• raw_atomic64_sub_return_release(9)
• raw_atomic64_sub_return_relaxed(9)
• raw_atomic64_fetch_sub(9)
• raw_atomic64_fetch_sub_acquire(9)
• raw_atomic64_fetch_sub_release(9)
• raw_atomic64_fetch_sub_relaxed(9)
• raw_atomic64_inc(9)
• raw_atomic64_inc_return(9)
• raw_atomic64_inc_return_acquire(9)
• raw_atomic64_inc_return_release(9)
• raw_atomic64_inc_return_relaxed(9)
• raw_atomic64_fetch_inc(9)
• raw_atomic64_fetch_inc_acquire(9)
• raw_atomic64_fetch_inc_release(9)
• raw_atomic64_fetch_inc_relaxed(9)
• raw_atomic64_dec(9)
• raw_atomic64_dec_return(9)
• raw_atomic64_dec_return_acquire(9)
• raw_atomic64_dec_return_release(9)
• raw_atomic64_dec_return_relaxed(9)
• raw_atomic64_fetch_dec(9)
• raw_atomic64_fetch_dec_acquire(9)
• raw_atomic64_fetch_dec_release(9)
• raw_atomic64_fetch_dec_relaxed(9)
• raw_atomic64_and(9)
• raw_atomic64_fetch_and(9)
• raw_atomic64_fetch_and_acquire(9)
• raw_atomic64_fetch_and_release(9)
• raw_atomic64_fetch_and_relaxed(9)
• raw_atomic64_andnot(9)
• raw_atomic64_fetch_andnot(9)
• raw_atomic64_fetch_andnot_acquire(9)
• raw_atomic64_fetch_andnot_release(9)
• raw_atomic64_fetch_andnot_relaxed(9)
• raw_atomic64_or(9)
• raw_atomic64_fetch_or(9)
• raw_atomic64_fetch_or_acquire(9)
• raw_atomic64_fetch_or_release(9)
• raw_atomic64_fetch_or_relaxed(9)
• raw_atomic64_xor(9)
• raw_atomic64_fetch_xor(9)
• raw_atomic64_fetch_xor_acquire(9)
• raw_atomic64_fetch_xor_release(9)
• raw_atomic64_fetch_xor_relaxed(9)
• raw_atomic64_xchg(9)
• raw_atomic64_xchg_acquire(9)
• raw_atomic64_xchg_release(9)
• raw_atomic64_xchg_relaxed(9)
• raw_atomic64_cmpxchg(9)
• raw_atomic64_cmpxchg_acquire(9)
• raw_atomic64_cmpxchg_release(9)
• raw_atomic64_cmpxchg_relaxed(9)
• raw_atomic64_try_cmpxchg(9)
• raw_atomic64_try_cmpxchg_acquire(9)
• raw_atomic64_try_cmpxchg_release(9)
• raw_atomic64_try_cmpxchg_relaxed(9)
• raw_atomic64_sub_and_test(9)
• raw_atomic64_dec_and_test(9)
• raw_atomic64_inc_and_test(9)
• raw_atomic64_add_negative(9)
• raw_atomic64_add_negative_acquire(9)
• raw_atomic64_add_negative_release(9)
• raw_atomic64_add_negative_relaxed(9)
• raw_atomic64_fetch_add_unless(9)
• raw_atomic64_add_unless(9)
• raw_atomic64_inc_not_zero(9)
• raw_atomic64_inc_unless_negative(9)
• raw_atomic64_dec_unless_positive(9)
• raw_atomic64_dec_if_positive(9)

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okay that's the whole page bestie 🫶 footer vibes: source/version ./include/linux/atomic, date October 2026, title raw_atomic_fetch_or(9). byeee 💜