diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /kernel/power/poweroff.c |
Linux-2.6.12-rc2v2.6.12-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!
Diffstat (limited to 'kernel/power/poweroff.c')
-rw-r--r-- | kernel/power/poweroff.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/kernel/power/poweroff.c b/kernel/power/poweroff.c new file mode 100644 index 000000000000..715081b2d829 --- /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 <linux/kernel.h> +#include <linux/sysrq.h> +#include <linux/init.h> +#include <linux/pm.h> +#include <linux/workqueue.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) +{ + 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); |