nbcon_device_try_acquire(9)

✨ NAME ✨

okay bestie, welcome to the Kernel API Manual page for nbcon_device_try_acquire(9) — it's giving try to acquire nbcon console and enter unsafe section energy 💅

nbcon_device_try_acquire — Try to acquire nbcon console and enter unsafe section. 🎀

📜 SYNOPSIS 📜

bool nbcon_device_try_acquire (struct console *con );

🫶 ARGUMENTS 🫶

• con — The nbcon console to acquire. 🦋

🔒 CONTEXT 🔒

This one happens under the locking mechanism implemented in con->device_lock, including disabling migration. Lock vibe check respected, no cap. 🔥

🎯 RETURN 🎯

True if the console was acquired. False otherwise. Simple as that, bestie. 😌

💖 DESCRIPTION 💖

okay so console drivers will usually use their own internal synchronization mechanism to synchronize between console printing and non-printing activities (such as setting baud rates). That's their normal era. 🌸

However, nbcon console drivers supporting atomic consoles may also want to mark unsafe sections when performing non-printing activities in order to synchronize against their atomic_write callback. It's giving “we need a little unsafe-section moment” energy, and honestly? Iconic. ✨

This function acquires the nbcon console using priority NBCON_PRIO_NORMAL and marks it unsafe for handover/takeover. Periodt. 💅

🌈 SEE ALSO 🌈

The whole crew, in the original order:

• Kernel file ./kernel/printk/nbcon.c
• 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_atomic_flush_unsafe(9)
• nbcon_cpu_emergency_enter(9)
• nbcon_cpu_emergency_exit(9)
• nbcon_alloc(9)
• nbcon_free(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)

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okay that's the whole nbcon_device_try_acquire(9) page, mwah 💋 — the source/version corner is ./kernel/printk, dated October 2026, catch u later bestie 🫶