| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | /* |
| 3 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
| 4 | */ |
| 5 | |
| 6 | #include <linux/sched/signal.h> |
| 7 | #include <linux/sched/task.h> |
| 8 | #include <linux/sched/mm.h> |
| 9 | #include <linux/spinlock.h> |
| 10 | #include <linux/slab.h> |
| 11 | #include <linux/oom.h> |
| 12 | #include <linux/reboot.h> |
| 13 | #include <kern_util.h> |
| 14 | #include <os.h> |
| 15 | #include <skas.h> |
| 16 | |
| 17 | void (*pm_power_off)(void); |
| 18 | EXPORT_SYMBOL(pm_power_off); |
| 19 | |
| 20 | static void kill_off_processes(void) |
| 21 | { |
| 22 | struct task_struct *p; |
| 23 | int pid; |
| 24 | |
| 25 | read_lock(&tasklist_lock); |
| 26 | for_each_process(p) { |
| 27 | struct task_struct *t; |
| 28 | |
| 29 | t = find_lock_task_mm(p); |
| 30 | if (!t) |
| 31 | continue; |
| 32 | pid = t->mm->context.id.pid; |
| 33 | task_unlock(p: t); |
| 34 | os_kill_ptraced_process(pid, 1); |
| 35 | } |
| 36 | read_unlock(&tasklist_lock); |
| 37 | } |
| 38 | |
| 39 | void uml_cleanup(void) |
| 40 | { |
| 41 | kmalloc_ok = 0; |
| 42 | do_uml_exitcalls(); |
| 43 | kill_off_processes(); |
| 44 | } |
| 45 | |
| 46 | void machine_restart(char * __unused) |
| 47 | { |
| 48 | uml_cleanup(); |
| 49 | reboot_skas(); |
| 50 | } |
| 51 | |
| 52 | void machine_power_off(void) |
| 53 | { |
| 54 | uml_cleanup(); |
| 55 | halt_skas(); |
| 56 | } |
| 57 | |
| 58 | void machine_halt(void) |
| 59 | { |
| 60 | machine_power_off(); |
| 61 | } |
| 62 | |
| 63 | static int sys_power_off_handler(struct sys_off_data *data) |
| 64 | { |
| 65 | machine_power_off(); |
| 66 | return 0; |
| 67 | } |
| 68 | |
| 69 | static int register_power_off(void) |
| 70 | { |
| 71 | register_sys_off_handler(mode: SYS_OFF_MODE_POWER_OFF, |
| 72 | SYS_OFF_PRIO_DEFAULT, |
| 73 | callback: sys_power_off_handler, NULL); |
| 74 | return 0; |
| 75 | } |
| 76 | __initcall(register_power_off); |
| 77 |