emergency_restart(9)

💖 NAME 💖

okay so emergency_restart is literally the “reboot the system” function, bestie — and this is the emergency_restart(9) page in the Kernel API Manual. It’s giving emergency main character energy. 💅

✨ SYNOPSIS ✨

void emergency_restart (void );

that’s the whole signature, no cap. 🫶

🎀 ARGUMENTS 🎀

• void — no arguments. zero. nada. nothing to pass in, bestie. 🎀

🦋 DESCRIPTION 🦋

When you call this, it reboots the system without shutting down any hardware or taking any locks. It’s the “we know we’re in trouble” move, so this is the best effort to reboot. And yes: it is safe to call in interrupt context. Slay for emergency code, honestly. 🔥

🌈 SEE ALSO 🌈

bestie, the cross-reference list is long and iconic — no skipping, fr fr:

• Kernel file: ./kernel/reboot.c — the kernel file, front and center.
• 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_failure_emergency_schedule(9)
• __hw_protection_trigger(9)

and that’s the page, bestie! source/version corner: ./kernel; date: October 2026; manual: emergency_restart(9). mwah 💋✨