hw_failure_...ncy_schedule(9)

💅 hw_failure_emergency_schedule — Kernel API Manual ✨

okay bestie so we're deep in the kernel API manual today and the page we're on is hw_failure_...ncy_schedule(9) — yes the title is literally abbreviated with dots in the middle, that's just how the header rolls, it's giving truncated-slash-iconic 🎀

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🌸 NAME 🌸

hw_failure_emergency_schedule — schedule an emergency system shutdown or reboot 🚨💀

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✨ SYNOPSIS ✨

void hw_failure_emergency_schedule (enum hw_protection_action action ,
int action_delay_ms );

like, that's the whole vibe. void, so it doesn't hand you anything back. it just does the thing. 👑

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🫶 ARGUMENTS 🫶

• action — the hardware protection action that's gonna get taken. this is the main character of the whole call ngl.
• action_delay_ms — the time in milliseconds to elapse before the action gets triggered. so it's not instant, it's fashionably late by exactly however many ms you told it. ⏳

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🦋 DESCRIPTION 🦋

so the way this works is: you can call this from literally any critical situation and it'll trigger a system shutdown or reboot after a given period of time. no cap. emergency hours fr fr.

and here's the little plot twist 🙈 — if time is negative this is not scheduled. that's it. negative delay = nothing happens. the vibe check fails, the schedule does not get made. periodt.

⚠️ bestie this one is for critical situations only — the manual says so directly, and we do not editorialise. it's an emergency shutdown/reboot scheduler, not a toy. 💅

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🔥 SEE ALSO 🔥

the kernel file ./kernel/reboot.c is the mothership, and she has a whole friend group:

• emergency_restart(9)
• register_reboot_notifier(9)
• unregister_reboot_notifier(9)
• register_restart_handler(9)
• unregister_restart_handler(9)
• do_kernel_restart(9)
• kernel_restart(9)
• kernel_halt(9)
• register_sys_off_handler(9)
• unregister_sys_off_handler(9)
• devm_register_sys_off_handler(9)
• devm_register_power_off_handler(9)
• devm_register_restart_handler(9)
• register_platform_power_off(9)
• unregister_platform_power_off(9)
• do_kernel_power_off(9)
• kernel_can_power_off(9)
• kernel_power_off(9)
• orderly_poweroff(9)
• orderly_reboot(9)
• hw_failure_emergency_action_func(9)
• __hw_protection_trigger(9)

like, that's the whole reboot/poweroff extended universe. iykyk 🌈⭐

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and that's the page!! 🎀 mwah 💖

so this little beauty lives in ./kernel, dated October 2026 — source and version, cute sign-off, bye bestie, go schedule your emergency shutdown responsibly 🦋💜