kmsg_dump_unregister(9)

💅 kmsg_dump_unregister (kernel API manual, bestie edition)

Ok so picture this: you're deep in the kernel API manual, section 9, and you've found the page for kmsg_dump_unregister. Welcome, bestie, this is the un-registration page 🎀

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✨ NAME ✨

kmsg_dump_unregister — literally the "unregister a kmsg dumper" function. That's the whole vibe. 💫

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🌸 SYNOPSIS 🌸

int kmsg_dump_unregister (struct kmsg_dumper *dumper );

Like, that's it. One function, one argument, returns an int. Slay. ✨

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🦋 ARGUMENTS 🦋

• dumper — pointer to the kmsg_dumper structure 💅 like, the actual struct you're trying to remove from the system. This is the main character of the whole call, no cap.

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🔥 DESCRIPTION 🔥

So what does it do? It removes a dump device from the system. That's the tea ☕

Returns zero on success — and -EINVAL otherwise. So basically: 0 means we ate and left no crumbs, and -EINVAL means something in the argument didn't vibe check 👑 Not me being dramatic, that's just what the return values are, fr fr.

Heads up bestie: the return type is int, and the only two outcomes documented here are zero for success and -EINVAL for anything else. Don't go inventing extra error codes, I'm begging 🙈

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💜 SEE ALSO 💜

The whole printk friend group 🫶 — genuinely iconic lineup, every single one:

• 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_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)

iykyk 💅

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And that's the page, bestie! Sign-off time: this lil gem lives in ./kernel/printk, dated October 2026 — go forth and unregister responsibly 🧚‍♀️💖✨