From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- kernel/power/poweroff.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 kernel/power/poweroff.c (limited to 'kernel/power/poweroff.c') diff --git a/kernel/power/poweroff.c b/kernel/power/poweroff.c new file mode 100644 index 00000000000..715081b2d82 --- /dev/null +++ b/kernel/power/poweroff.c @@ -0,0 +1,45 @@ +/* + * poweroff.c - sysrq handler to gracefully power down machine. + * + * This file is released under the GPL v2 + */ + +#include +#include +#include +#include +#include + +/* + * When the user hits Sys-Rq o to power down the machine this is the + * callback we use. + */ + +static void do_poweroff(void *dummy) +{ + if (pm_power_off) + pm_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); -- cgit v1.2.3