1 files changed, 43 insertions, 12 deletions

diff --git a/kernel/printk.c b/kernel/printk.c
index 0bbdeac2810..051d27e36a6 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -449,13 +449,16 @@ static int printk_time = 1;
 #else
 static int printk_time = 0;
 #endif
-module_param(printk_time, int, S_IRUGO | S_IWUSR);
+module_param_named(time, printk_time, bool, S_IRUGO | S_IWUSR);
 
 static int __init printk_time_setup(char *str)
 {
 	if (*str)
 		return 0;
 	printk_time = 1;
+	printk(KERN_NOTICE "The 'time' option is deprecated and "
+		"is scheduled for removal in early 2008\n");
+	printk(KERN_NOTICE "Use 'printk.time=<value>' instead\n");
 	return 1;
 }
 
@@ -483,6 +486,9 @@ static int have_callable_console(void)
  * @fmt: format string
  *
  * This is printk().  It can be called from any context.  We want it to work.
+ * Be aware of the fact that if oops_in_progress is not set, we might try to
+ * wake klogd up which could deadlock on runqueue lock if printk() is called
+ * from scheduler code.
  *
  * We try to grab the console_sem.  If we succeed, it's easy - we log the output and
  * call the console drivers.  If we fail to get the semaphore we place the output
@@ -654,7 +660,7 @@ static void call_console_drivers(unsigned long start, unsigned long end)
  */
 static int __init console_setup(char *str)
 {
-	char name[sizeof(console_cmdline[0].name)];
+	char buf[sizeof(console_cmdline[0].name) + 4]; /* 4 for index */
 	char *s, *options;
 	int idx;
 
@@ -662,27 +668,27 @@ static int __init console_setup(char *str)
 	 * Decode str into name, index, options.
 	 */
 	if (str[0] >= '0' && str[0] <= '9') {
-		strcpy(name, "ttyS");
-		strncpy(name + 4, str, sizeof(name) - 5);
+		strcpy(buf, "ttyS");
+		strncpy(buf + 4, str, sizeof(buf) - 5);
 	} else {
-		strncpy(name, str, sizeof(name) - 1);
+		strncpy(buf, str, sizeof(buf) - 1);
 	}
-	name[sizeof(name) - 1] = 0;
+	buf[sizeof(buf) - 1] = 0;
 	if ((options = strchr(str, ',')) != NULL)
 		*(options++) = 0;
 #ifdef __sparc__
 	if (!strcmp(str, "ttya"))
-		strcpy(name, "ttyS0");
+		strcpy(buf, "ttyS0");
 	if (!strcmp(str, "ttyb"))
-		strcpy(name, "ttyS1");
+		strcpy(buf, "ttyS1");
 #endif
-	for (s = name; *s; s++)
+	for (s = buf; *s; s++)
 		if ((*s >= '0' && *s <= '9') || *s == ',')
 			break;
 	idx = simple_strtoul(s, NULL, 10);
 	*s = 0;
 
-	add_preferred_console(name, idx, options);
+	add_preferred_console(buf, idx, options);
 	return 1;
 }
 __setup("console=", console_setup);
@@ -709,7 +715,7 @@ int __init add_preferred_console(char *name, int idx, char *options)
 	 *	See if this tty is not yet registered, and
 	 *	if we have a slot free.
 	 */
-	for(i = 0; i < MAX_CMDLINECONSOLES && console_cmdline[i].name[0]; i++)
+	for (i = 0; i < MAX_CMDLINECONSOLES && console_cmdline[i].name[0]; i++)
 		if (strcmp(console_cmdline[i].name, name) == 0 &&
 			  console_cmdline[i].index == idx) {
 				selected_console = i;
@@ -726,6 +732,25 @@ int __init add_preferred_console(char *name, int idx, char *options)
 	return 0;
 }
 
+int __init update_console_cmdline(char *name, int idx, char *name_new, int idx_new, char *options)
+{
+	struct console_cmdline *c;
+	int i;
+
+	for (i = 0; i < MAX_CMDLINECONSOLES && console_cmdline[i].name[0]; i++)
+		if (strcmp(console_cmdline[i].name, name) == 0 &&
+			  console_cmdline[i].index == idx) {
+				c = &console_cmdline[i];
+				memcpy(c->name, name_new, sizeof(c->name));
+				c->name[sizeof(c->name) - 1] = 0;
+				c->options = options;
+				c->index = idx_new;
+				return i;
+		}
+	/* not found */
+	return -1;
+}
+
 #ifndef CONFIG_DISABLE_CONSOLE_SUSPEND
 /**
  * suspend_console - suspend the console subsystem
@@ -942,6 +967,9 @@ void register_console(struct console *console)
 	if (preferred_console < 0 || bootconsole || !console_drivers)
 		preferred_console = selected_console;
 
+	if (console->early_setup)
+		console->early_setup();
+
 	/*
 	 *	See if we want to use this console driver. If we
 	 *	didn't select a console we take the first one
@@ -985,12 +1013,15 @@ void register_console(struct console *console)
 	if (!(console->flags & CON_ENABLED))
 		return;
 
-	if (bootconsole) {
+	if (bootconsole && (console->flags & CON_CONSDEV)) {
 		printk(KERN_INFO "console handover: boot [%s%d] -> real [%s%d]\n",
 		       bootconsole->name, bootconsole->index,
 		       console->name, console->index);
 		unregister_console(bootconsole);
 		console->flags &= ~CON_PRINTBUFFER;
+	} else {
+		printk(KERN_INFO "console [%s%d] enabled\n",
+		       console->name, console->index);
 	}
 
 	/*