__printk_cpu_sync_try_get(9)

💖 __printk_cpu_sync_try_get(9) — Kernel API Manual 💖

🌸 NAME 🌸

__printk_cpu_sync_try_get — bestie, this is the “try to acquire the printk cpu-reentrant spinning lock” function. Yes, the whole lock name. Iconic.

✨ SYNOPSIS ✨

int __printk_cpu_sync_try_get (void );

🎀 ARGUMENTS 🎀

• void — no arguments at all, bestie. Nothing to pass in. Not even a little guy.

💅 DESCRIPTION 💅

Okay so here’s the tea: if no processor has the lock, the calling processor takes the lock and becomes the owner. Simple.

And if the calling processor is already the owner of the lock, this function succeeds immediately. No drama, no waiting, just “oh hey, it’s me, I already have it” energy. ✨

🦋 CONTEXT 🦋

Any context, bestie. But the vibe check is important: it expects interrupts to be disabled. So keep that in mind before you call it. 🫶

🌈 RETURN 🌈

• 1 on success, otherwise 0. That’s it. That’s the whole return situation. 💖

👑 SEE ALSO 👑

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_trylock(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_put(9)

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okay that’s the whole page, bestie. This one is from ./kernel/printk and it’s dated October 2026. Bye bestie, mwah 💋💜