__printk_cpu_sync_put(9)

💅 __printk_cpu_sync_put — Kernel API Manual energy ✨

okay so bestie, we're deep in the kernel API manual rn and this one is literally the release the lock girlie 🎀 like she's the counterpart to all the grabbing, and she does NOT get enough hype. let's get into it 🫶

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✨ NAME ✨

__printk_cpu_sync_put — releases the printk cpu-reentrant spinning lock. that's it. that's her whole job and she ate 💅

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🌸 SYNOPSIS 🌸

void __printk_cpu_sync_put (void );

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🦋 ARGUMENTS 🦋

• void — no arguments, bestie. zero. nada. she takes nothing and she gives you your lock back 😌

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💖 DESCRIPTION 💖

so here's the vibe: the calling processor must be the owner of the lock. like, you cannot just roll up and call this if you're not the one holding it — that's not your lock to release, main character or not 🙈

that's the whole description. short, iconic, no notes. ✨

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🔥 CONTEXT 🔥

any context, slay — she's flexible like that. but she expects interrupts to be disabled, so keep that in mind before you call her, okay? no cap. ⭐

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👑 SEE ALSO 👑

the whole friend group, fr fr — plus the kernel file ./kernel/printk/printk.c where all this lives 💜

• 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_try_get(9)

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🎀 reminder bestie: only the lock owner calls this. everyone else, hands off, iykyk 💅

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and that's the page!! brought to you straight out of ./kernel/printk, stamped October 2026, version __printk_cpu_sync_put(9) — go forth and release your locks responsibly, mwah 😭💖🌈