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authorIngo Molnar <mingo@elte.hu>2008-10-02 10:21:26 +0200
committerIngo Molnar <mingo@elte.hu>2008-10-02 10:21:26 +0200
commitd6d5aeb661fc14655c417f3582ae7ec52985d2a8 (patch)
tree5e168da05cb28d10b5accc74718428cfd5527201 /kernel/printk.c
parent7e6e178ab1548c8d894a77593e757acf4510b8ba (diff)
parent94aca1dac6f6d21f4b07e4864baf7768cabcc6e7 (diff)
Merge commit 'v2.6.27-rc8' into genirq
Diffstat (limited to 'kernel/printk.c')
-rw-r--r--kernel/printk.c23
1 files changed, 6 insertions, 17 deletions
diff --git a/kernel/printk.c b/kernel/printk.c
index 07ad9e7f7a6..b51b1567bb5 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -933,7 +933,7 @@ void suspend_console(void)
{
if (!console_suspend_enabled)
return;
- printk("Suspending console(s)\n");
+ printk("Suspending console(s) (use no_console_suspend to debug)\n");
acquire_console_sem();
console_suspended = 1;
}
@@ -1308,29 +1308,18 @@ void tty_write_message(struct tty_struct *tty, char *msg)
}
#if defined CONFIG_PRINTK
+
/*
* printk rate limiting, lifted from the networking subsystem.
*
- * This enforces a rate limit: not more than one kernel message
- * every printk_ratelimit_jiffies to make a denial-of-service
- * attack impossible.
+ * This enforces a rate limit: not more than 10 kernel messages
+ * every 5s to make a denial-of-service attack impossible.
*/
-int __printk_ratelimit(int ratelimit_jiffies, int ratelimit_burst)
-{
- return __ratelimit(ratelimit_jiffies, ratelimit_burst);
-}
-EXPORT_SYMBOL(__printk_ratelimit);
-
-/* minimum time in jiffies between messages */
-int printk_ratelimit_jiffies = 5 * HZ;
-
-/* number of messages we send before ratelimiting */
-int printk_ratelimit_burst = 10;
+DEFINE_RATELIMIT_STATE(printk_ratelimit_state, 5 * HZ, 10);
int printk_ratelimit(void)
{
- return __printk_ratelimit(printk_ratelimit_jiffies,
- printk_ratelimit_burst);
+ return __ratelimit(&printk_ratelimit_state);
}
EXPORT_SYMBOL(printk_ratelimit);