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) // Copyright (C) 2014 Seth Jennings <sjenning@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/livepatch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) static int livepatch_cmdline_proc_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	seq_printf(m, "%s: %s\n", THIS_MODULE->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 		   "this has been live patched");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static struct klp_func funcs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		.old_name = "cmdline_proc_show",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		.new_func = livepatch_cmdline_proc_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	}, { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static struct klp_object objs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		/* name being NULL means vmlinux */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		.funcs = funcs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	}, { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static struct klp_patch patch = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	.mod = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	.objs = objs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static int test_klp_livepatch_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	return klp_enable_patch(&patch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static void test_klp_livepatch_exit(void)
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) module_init(test_klp_livepatch_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) module_exit(test_klp_livepatch_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) MODULE_INFO(livepatch, "Y");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) MODULE_AUTHOR("Seth Jennings <sjenning@redhat.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) MODULE_DESCRIPTION("Livepatch test: livepatch module");