nbcon_kthread_should_wakeup(9)

💅 nbcon_kthread_should_wakeup(9)

okay so real talk bestie, this is a page straight out of the Kernel API Manual — nbcon_kthread_should_wakeup(9) — and it's basically the "should I even get out of bed" check for a printk thread. let's get into it 🫶

---

✨ NAME ✨

nbcon_kthread_should_wakeup — check whether a printer thread should wakeup

like, literally the vibe check for a sleeping printer thread. should it wake up? that's the whole question. 💤➡️👀

---

✨ SYNOPSIS ✨

bool nbcon_kthread_should_wakeup (struct console *con , struct nbcon_context *ctxt );

returns a bool, takes a console and a context, that's the whole signature bestie, no cap. 🎀

---

✨ ARGUMENTS ✨

• con — console to operate on, i.e. the actual console you're poking at 🖥️
• ctxt — the nbcon context from nbcon_context_try_acquire, like the lil permission slip you got earlier ✨

---

✨ RETURN ✨

returns True if the thread should shutdown, or if the console is allowed to print and a record is available. otherwise False. so it's giving "yes queen go do the thing (or go home), no otherwise" 💅

---

✨ DESCRIPTION ✨

okay listen, this part is important. once the thread wakes up, it must first check if it should shutdown before it attempts any printing. like, before you start doing anything, check if you're supposed to be leaving. priorities, bestie. 🙈

not me emphasizing this but fr fr — shutdown check comes first, printing comes after. that's the whole rule. 💀

---

✨ SEE ALSO ✨

the source lives in the kernel file ./kernel/printk/nbcon.c and honestly the whole friend group is here, obsessed 👑

• 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_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_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)

---

and that's the page!! 🦋 source lives under the kernel file ./kernel/printk, this one's dated October 2026, and it's section 9 of the manual — mwah, go read the whole nbcon friend group, they all ate 💖🌸⭐