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) #include <linux/kmsg_dump.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #include <linux/console.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <shared/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <shared/kern.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <os.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) static void kmsg_dumper_stdout(struct kmsg_dumper *dumper,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 				enum kmsg_dump_reason reason)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	static char line[1024];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	struct console *con;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	size_t len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	/* only dump kmsg when no console is available */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	if (!console_trylock())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	for_each_console(con)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	console_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	if (con)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	printf("kmsg_dump:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	while (kmsg_dump_get_line(dumper, true, line, sizeof(line), &len)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		line[len] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		printf("%s", line);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static struct kmsg_dumper kmsg_dumper = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	.dump = kmsg_dumper_stdout
^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) int __init kmsg_dumper_stdout_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	return kmsg_dump_register(&kmsg_dumper);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) __uml_postsetup(kmsg_dumper_stdout_init);