3  *  linux/kernel/reboot.c
8 #define pr_fmt(fmt)	"reboot: " fmt
16 #include <linux/reboot.h>
23  * this indicates whether you can reboot with ctrl-alt-del: the default is yes
43  * reboot_type is still set to its default value (i.e., reboot= hasn't
45  * suppress DMI scanning for reboot quirks.  Without it, it's
46  * impossible to override a faulty reboot quirk without recompiling.
65  * reboot when the reboot call was invoked with LINUX_REBOOT_CMD_POWER_OFF, but
85  *	emergency_restart - reboot the system
88  *	reboot the system.  This is called when we know we are in
89  *	trouble so this is our best effort to reboot.  This is
109  *	register_reboot_notifier - Register function to be called at reboot time
113  *	to be called at reboot time.
125  *	unregister_reboot_notifier - Unregister previously registered reboot notifier
128  *	Unregisters a previously registered reboot
257 	/* Make certain the cpu I'm about to reboot on is online */  in migrate_to_reboot_cpu()
280  *	kernel_restart - reboot the system
284  *	Shutdown everything and perform a clean reboot.
721  * Reboot system call: for obvious reasons only root may call it,
723  * so that some mistake won't make this reboot the whole machine.
726  * reboot doesn't sync: do that yourself before calling this.
728 SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd,  in SYSCALL_DEFINE4()  argument
826  * is whether to reboot at once, or just ignore the ctrl-alt-del.
840 static const char reboot_cmd[] = "/sbin/reboot";
869 		pr_warn("Failed to start orderly reboot: forcing the issue\n");  in __orderly_reboot()
930  * orderly_reboot - Trigger an orderly system reboot
932  * This may be called from any context to trigger a system reboot.
933  * If the orderly reboot fails, it will force an immediate reboot.
947 		return "reboot";  in hw_protection_action_str()
960  * a kernel poweroff or reboot after a configurable timeout value.
971 	 * expired. This means orderly_poweroff/reboot has not been able to  in hw_failure_emergency_action_func()
994  * hw_failure_emergency_schedule - Schedule an emergency system shutdown or reboot
1000  * or reboot after a given period of time.
1014  * __hw_protection_trigger - Trigger an emergency system shutdown or reboot
1016  * @reason:		Reason of emergency shutdown or reboot to be printed.
1017  * @ms_until_forced:	Time to wait for orderly shutdown or reboot before
1019  *			shutdown or reboot.
1022  * Initiate an emergency system shutdown or reboot in order to protect
1024  * NOTE: The request is ignored if protection shutdown or reboot is already
1026  * shutdown/reboot.
1060 	else if (sysfs_streq(str, "reboot"))  in hw_protection_action_parse()
1104 		 * reboot= will cause us to disable DMI checking  in reboot_setup()
1140 					pr_err("Ignoring the CPU number in reboot= option. "  in reboot_setup()
1176 __setup("reboot=", reboot_setup);
1403 	reboot_kobj = kobject_create_and_add("reboot", kernel_kobj);  in reboot_ksysfs_init()