Signed-off-by: Jan Kara <j...@suse.cz>
---
kernel/printk/printk.c | 35 ++++++++++++++++++++++++++++++++++-
1 file changed, 34 insertions(+), 1 deletion(-)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 03f5278b47b4..8ac60219059a 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2300,6 +2300,21 @@ out:
raw_spin_unlock_irqrestore(&logbuf_lock, flags);
}
+static void printk_echo(char *fmt, ...)
+{
+ unsigned long flags;
+ va_list args;
+ char buf[128];
+ int len = 0;
+
+ va_start(args, fmt);
+ len += vsprintf(buf + len, fmt, args);
+ va_end(args);
+ local_irq_save(flags);
+ call_console_drivers(0, NULL, 0, buf, len);
+ local_irq_restore(flags);
+}
+
/*
* When oops happens and there are more messages to be printed in the printk
* buffer that this, skip some mesages and print only this many newest
messages.
@@ -2437,9 +2452,9 @@ skip:
call_console_drivers(level, ext_text, ext_len, text, len);
start_critical_timings();
local_irq_restore(flags);
-
if (do_cond_resched)
cond_resched();
+ mdelay(len);
}
console_locked = 0;
@@ -2806,6 +2821,18 @@ int unregister_console(struct console *console)
}
EXPORT_SYMBOL(unregister_console);
+static void do_print(struct work_struct *work)
+{
+ char buf[75];
+ int i;
+
+ sprintf(buf, "%p: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n",
work);
+ for (i = 0; i < 15; i++)
+ printk(buf);
+}
+
+static struct delayed_work print_work[100];
+
/*
* Some boot consoles access data that is in the init section and which will
* be discarded after the initcalls have been run. To make sure that no code
@@ -2824,6 +2851,12 @@ EXPORT_SYMBOL(unregister_console);
static int __init printk_late_init(void)
{
struct console *con;
+ int i;
+
+ for (i = 0; i < 100; i++) {
+ INIT_DELAYED_WORK(&print_work[i], do_print);
+ schedule_delayed_work(&print_work[i], HZ * 180);
+ }
for_each_console(con) {
if (!keep_bootcon && con->flags & CON_BOOT) {
--
2.6.2
