[GitHub/mt8127/android_kernel_alcatel_ttab.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>
#include <linux/cpumask.h>

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

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

static DECLARE_WORK(poweroff_work, do_poweroff);

static void handle_poweroff(int key)
{
	/* run sysrq poweroff on boot cpu */
	schedule_work_on(cpumask_first(cpu_online_mask), &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
	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>
	12	#include <linux/reboot.h>
	13	#include <linux/cpumask.h>
	14
	15	/*
	16	* When the user hits Sys-Rq o to power down the machine this is the
	17	* callback we use.
	18	*/
	19
	20	static void do_poweroff(struct work_struct *dummy)
	21	{
	22	kernel_power_off();
	23	}
	24
	25	static DECLARE_WORK(poweroff_work, do_poweroff);
	26
	27	static void handle_poweroff(int key)
	28	{
	29	/* run sysrq poweroff on boot cpu */
	30	schedule_work_on(cpumask_first(cpu_online_mask), &poweroff_work);
	31	}
	32
	33	static struct sysrq_key_op sysrq_poweroff_op = {
	34	.handler = handle_poweroff,
	35	.help_msg = "powerOff",
	36	.action_msg = "Power Off",
	37	.enable_mask = SYSRQ_ENABLE_BOOT,
	38	};
	39
	40	static int pm_sysrq_init(void)
	41	{
	42	register_sysrq_key('o', &sysrq_poweroff_op);
	43	return 0;
	44	}
	45
	46	subsys_initcall(pm_sysrq_init);