xen: print "debug=y|n" during hypervisor startup

So that we can easily figure out whether or not we are running a
debug build of Xen (e.g., via `xl dmesg').

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Committed-by: Keir Fraser <keir@xen.org>

diff --git a/xen/drivers/char/console.c b/xen/drivers/char/console.c
index ce843c5daa45bfdd90ec8d68cc081deb7b26829b..77b9619df333619851d1c6af9a2f476645af4062 100644 (file)
--- a/xen/drivers/char/console.c
+++ b/xen/drivers/char/console.c
@@ -577,6 +577,11 @@ void __init console_init_preirq(void)
 {
     char *p;
     int sh;
+#ifndef NDEBUG
+    char debug = 'y';
+#else
+    char debug = 'n';
+#endif
 
     serial_init_preirq();
 
@@ -608,10 +613,10 @@ void __init console_init_preirq(void)
     spin_lock(&console_lock);
     __putstr(xen_banner());
     spin_unlock(&console_lock);
-    printk("Xen version %d.%d%s (%s@%s) (%s) %s\n",
+    printk("Xen version %d.%d%s (%s@%s) (%s) debug=%c %s\n",
            xen_major_version(), xen_minor_version(), xen_extra_version(),
            xen_compile_by(), xen_compile_domain(),
-           xen_compiler(), xen_compile_date());
+           xen_compiler(), debug, xen_compile_date());
     printk("Latest ChangeSet: %s\n", xen_changeset());
 
     if ( opt_sync_console )