hardlockup_...or_perf_stop(9)

💅 hardlockup_detector_perf_stop — like, the Kernel API Manual page, bestie 🎀

okay so real talk, this is from the Kernel API Manual (section 9, kernel devs only, iykyk) and it's about hardlockup_detector_perf_stop. yes the name is a whole mouthful, no i will not be shortening it, it's giving "my parents named me after the family business" 💀

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✨ NAME ✨

hardlockup_detector_perf_stop — globally stop watchdog events 🛑🐕

like, globally. not just in your little corner. the whole vibe check, worldwide.

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🌸 SYNOPSIS 🌸

void hardlockup_detector_perf_stop (void );

that's it. that's the whole call. she's short and she knows it 💅

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🦋 ARGUMENTS 🦋

• void — no arguments, bestie!! none. zero. ✨nothing✨. you literally cannot pass her anything, so don't even try 🫶

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🔥 DESCRIPTION 🔥

so what does she actually do? okay so — this is a special interface for x86 to handle the perf HT bug 🐛💀

that's the whole description. yes it's one sentence. yes it's still iconic. she's niche, she's x86-specific, she's dealing with a hardware bug and she's not gonna write you a whole essay about it 🙈

ngl the manpage keeps this one short on purpose — it's a special-purpose hook, not a general-purpose vibe. take it at face value fr fr 💜

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👑 SEE ALSO 👑

go read these next if you wanna be a thorough main character 🌈:

• Kernel file ./kernel/watchdog_perf.c — the actual source, go snoop 🕵️‍♀️
• watchdog_hardlockup_enable(9)
• watchdog_hardlockup_disable(9)
• hardlockup_detector_perf_adjust_period(9)
• hardlockup_detector_perf_restart(9)
• watchdog_hardlockup_probe(9)
• hardlockup_config_perf_event(9)

like honestly that's a whole friend group right there, they all hang out together 🫂✨

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okay that's the whole page and yes it was short, but she ate regardless 💅✨ this lil gem lives in ./kernel, dated October 2026, from the Kernel API Manual — mwah, go read the source, ily, bye 🎀🦋💖