nbcon_atomic_flush_unsafe(9)

💅 nbcon_atomic_flush_unsafe(9) — the Kernel API Manual moment

okay so this is a page from the Kernel API Manual, and the function we're obsessing over today is nbcon_atomic_flush_unsafe. bestie, the name literally tells you the vibe: atomic flush… but unsafe 🫶

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✨ SYNOPSIS ✨

void nbcon_atomic_flush_unsafe (void );

that's it. that's the whole vibe. no arguments, no drama 💅

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🎀 ARGUMENTS 🎀

• void — no arguments. none. zero. the function said "i need nothing from you" and honestly? main character energy 👑

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🌸 DESCRIPTION 🌸

so what does it do?? it flushes the backlog up through the currently newest record. that's the whole assignment, and it ate 💖

and if a takeover needs to happen, it's gonna do an unsafe hostile takeover — like, if necessary, it will absolutely snatch that console, no cap. the "unsafe" is right there in the name for a reason, so don't act surprised 😭

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🦋 SEE ALSO 🦋

the kernel file lives at ./kernel/printk/nbcon.c and honestly the whole friend group is here — it's giving family reunion 🎀 go say hi to:

• nbcon_state_set(9)
• nbcon_state_read(9)
• nbcon_state_try_cmpxchg(9)
• nbcon_seq_read(9)
• nbcon_seq_force(9)
• nbcon_seq_try_update(9)
• nbcon_context_try_acquire_direct(9)
• nbcon_context_try_acquire_requested(9)
• nbcon_context_try_acquire_handover(9)
• nbcon_context_try_acquire_hostile(9)
• nbcon_context_try_acquire(9)
• nbcon_context_release(9)
• nbcon_context_can_proceed(9)
• nbcon_can_proceed(9)
• __nbcon_context_update_unsafe(9)
• nbcon_enter_unsafe(9)
• nbcon_exit_unsafe(9)
• nbcon_reacquire_nobuf(9)
• nbcon_emit_next_record(9)
• nbcon_kthread_should_wakeup(9)
• nbcon_kthread_func(9)
• nbcon_irq_work(9)
• nbcon_kthreads_wake(9)
• nbcon_kthread_create(9)
• nbcon_get_cpu_emergency_nesting(9)
• nbcon_get_default_prio(9)
• nbcon_allow_unsafe_takeover(9)
• nbcon_legacy_emit_next_record(9)
• __nbcon_atomic_flush_pending_con(9)
• nbcon_atomic_flush_pending_con(9)
• __nbcon_atomic_flush_pending(9)
• nbcon_atomic_flush_pending(9)
• nbcon_cpu_emergency_enter(9)
• nbcon_cpu_emergency_exit(9)
• nbcon_alloc(9)
• nbcon_free(9)
• nbcon_device_try_acquire(9)
• nbcon_device_release(9)
• nbcon_kdb_try_acquire(9)
• nbcon_kdb_release(9)
• nbcon_write_context_is_braille(9)
• nbcon_braille_try_acquire(9)
• nbcon_braille_release(9)

like, yes, that's a lot of names, but every single one of them is iconic in its own way 🌈 iykyk ✨

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🌟 the sign-off 🌟

this little gem lives in ./kernel/printk, and the page is dated October 2026 — yes bestie, we're reading from the future 😭🦋 anyway, nbcon_atomic_flush_unsafe(9), that's the whole page, ily, go flush something safely (or don't, it's literally in the name) 💜🎀