console_trylock(9)

✨ console_trylock(9) ✨

okay so bestie, welcome to the console_trylock page from the Kernel API Manual 🫶 this is a lil' kernel function and it's literally the bouncer at the door of the console subsystem, and she does NOT let just anyone in 💅

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💖 NAME 💖

console_trylock — tries to block the console subsystem from printing, no cap 🖨️🚫

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🌸 SYNOPSIS 🌸

int console_trylock (void );

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🎀 ARGUMENTS 🎀

• void — no arguments, she takes nothing, she's low maintenance like that 🙈

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✨ DESCRIPTION ✨

So here's the vibe: this function tries to acquire a lock, and that lock is the thing that guarantees that no consoles will be in — or enter — their write callback 😌 like, once you've got it, nobody's mid-print and nobody's about to start printing. main character energy fr fr 👑

It returns 1 on success, and 0 if it failed to acquire the lock 🥲 that's it, that's the whole tea.

ngl this is a try — so a 0 is a totally normal outcome, not a crash. just sayin' 😭

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🌈 SEE ALSO 🌈

the whole friend group 💜 these all live in the kernel file ./kernel/printk/printk.c:

• console_list_lock(9)
• console_list_unlock(9)
• console_srcu_read_lock(9)
• console_srcu_read_unlock(9)
• console_lock_spinning_enable(9)
• console_lock_spinning_disable_and_check(9)
• console_trylock_spinning(9)
• printk_parse_prefix(9)
• add_preferred_console(9)
• match_devname_and_update_preferred_console(9)
• console_suspend_all(9)
• console_cpu_notify(9)
• console_lock(9)
• console_unlock(9)
• console_flush_on_panic(9)
• printk_kthreads_shutdown(9)
• console_force_preferred_locked(9)
• pr_flush(9)
• wake_up_klogd(9)
• defer_console_output(9)
• printk_trigger_flush(9)
• printk_timed_ratelimit(9)
• kmsg_dump_register(9)
• kmsg_dump_unregister(9)
• kmsg_dump_desc(9)
• kmsg_dump_get_line(9)
• kmsg_dump_get_buffer(9)
• kmsg_dump_rewind(9)
• console_try_replay_all(9)
• __printk_cpu_sync_wait(9)
• __printk_cpu_sync_try_get(9)
• __printk_cpu_sync_put(9)

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okay that's the whole page bestie, go forth and lock responsibly 🦋✨

sign-off time: this lil' number lives under ./kernel/printk and it's dated October 2026 💖 slay, periodt 🎀