[linux.git] / kernel / power / poweroff.c

/*
 * poweroff.c - sysrq handler to gracefully power down machine.
 *
 * This file is released under the GPL v2
 */

#include <linux/kernel.h>
#include <linux/sysrq.h>
#include <linux/init.h>
#include <linux/pm.h>
#include <linux/workqueue.h>
#include <linux/reboot.h>

/*
 * When the user hits Sys-Rq o to power down the machine this is the
 * callback we use.
 */

static void do_poweroff(void *dummy)
{
	kernel_power_off();
}

static DECLARE_WORK(poweroff_work, do_poweroff, NULL);

static void handle_poweroff(int key, struct pt_regs *pt_regs,
				struct tty_struct *tty)
{
	schedule_work(&poweroff_work);
}

static struct sysrq_key_op	sysrq_poweroff_op = {
	.handler        = handle_poweroff,
	.help_msg       = "powerOff",
	.action_msg     = "Power Off",
 	.enable_mask	= SYSRQ_ENABLE_BOOT,
};

static int pm_sysrq_init(void)
{
	register_sysrq_key('o', &sysrq_poweroff_op);
	return 0;
}

subsys_initcall(pm_sysrq_init);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* poweroff.c - sysrq handler to gracefully power down machine.
	3	*
	4	* This file is released under the GPL v2
	5	*/
	6
	7	#include <linux/kernel.h>
	8	#include <linux/sysrq.h>
	9	#include <linux/init.h>
	10	#include <linux/pm.h>
	11	#include <linux/workqueue.h>
ff319777	12	#include <linux/reboot.h>
1da177e4 LT	13
	14	/*
	15	* When the user hits Sys-Rq o to power down the machine this is the
	16	* callback we use.
	17	*/
	18
	19	static void do_poweroff(void *dummy)
	20	{
ff319777	21	kernel_power_off();
1da177e4 LT	22	}
	23
	24	static DECLARE_WORK(poweroff_work, do_poweroff, NULL);
	25
	26	static void handle_poweroff(int key, struct pt_regs *pt_regs,
	27	struct tty_struct *tty)
	28	{
	29	schedule_work(&poweroff_work);
	30	}
	31
	32	static struct sysrq_key_op sysrq_poweroff_op = {
	33	.handler = handle_poweroff,
	34	.help_msg = "powerOff",
	35	.action_msg = "Power Off",
	36	.enable_mask = SYSRQ_ENABLE_BOOT,
	37	};
	38
	39	static int pm_sysrq_init(void)
	40	{
	41	register_sysrq_key('o', &sysrq_poweroff_op);
	42	return 0;
	43	}
	44
	45	subsys_initcall(pm_sysrq_init);