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1/*2 * Created by: Jason Wessel <jason.wessel@windriver.com>3 *4 * Copyright (c) 2010 Wind River Systems, Inc. All Rights Reserved.5 *6 * This file is licensed under the terms of the GNU General Public7 * License version 2. This program is licensed "as is" without any8 * warranty of any kind, whether express or implied.9 */10 11#include <linux/module.h>12#include <linux/kdb.h>13 14/*15 * All kdb shell command call backs receive argc and argv, where16 * argv[0] is the command the end user typed17 */18static int kdb_hello_cmd(int argc, const char **argv)19{20 if (argc > 1)21 return KDB_ARGCOUNT;22 23 if (argc)24 kdb_printf("Hello %s.\n", argv[1]);25 else26 kdb_printf("Hello world!\n");27 28 return 0;29}30 31static kdbtab_t hello_cmd = {32 .name = "hello",33 .func = kdb_hello_cmd,34 .usage = "[string]",35 .help = "Say Hello World or Hello [string]",36};37 38static int __init kdb_hello_cmd_init(void)39{40 /*41 * Registration of a dynamically added kdb command is done with42 * kdb_register().43 */44 kdb_register(&hello_cmd);45 return 0;46}47 48static void __exit kdb_hello_cmd_exit(void)49{50 kdb_unregister(&hello_cmd);51}52 53module_init(kdb_hello_cmd_init);54module_exit(kdb_hello_cmd_exit);55 56MODULE_AUTHOR("WindRiver");57MODULE_DESCRIPTION("KDB example to add a hello command");58MODULE_LICENSE("GPL");59