+
+int __initdata xmon_early, xmon_off;
+
+static int __init early_parse_xmon(char *p)
+{
+ if (!p || strncmp(p, "early", 5) == 0) {
+ /* just "xmon" is equivalent to "xmon=early" */
+ xmon_init(1);
+ xmon_early = 1;
+ } else if (strncmp(p, "on", 2) == 0)
+ xmon_init(1);
+ else if (strncmp(p, "off", 3) == 0)
+ xmon_off = 1;
+ else if (strncmp(p, "nobt", 4) == 0)
+ xmon_no_auto_backtrace = 1;
+ else
+ return 1;
+
+ return 0;
+}
+early_param("xmon", early_parse_xmon);
+
+void __init xmon_setup(void)
+{
+#ifdef CONFIG_XMON_DEFAULT
+ if (!xmon_off)
+ xmon_init(1);
+#endif
+ if (xmon_early)
+ debugger(NULL);
+}