Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /* 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/sched/task.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/sched/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/oom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <kern_util.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <os.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <skas.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) void (*pm_power_off)(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) EXPORT_SYMBOL(pm_power_off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static void kill_off_processes(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	struct task_struct *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	int pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	read_lock(&tasklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	for_each_process(p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		struct task_struct *t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		t = find_lock_task_mm(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		if (!t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		pid = t->mm->context.id.u.pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		task_unlock(t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		os_kill_ptraced_process(pid, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	read_unlock(&tasklist_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) void uml_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	kmalloc_ok = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	do_uml_exitcalls();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	kill_off_processes();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) void machine_restart(char * __unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	uml_cleanup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	reboot_skas();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) void machine_power_off(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	uml_cleanup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	halt_skas();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) void machine_halt(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	machine_power_off();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }