[PATCH] rate limiting for the ldisc open failure messages

This patch limits the messages when ldisc open faulures happen. It happens under memory pressure. Signed-off-by: Akinobu Mita <[email protected]> Acked-by: Alan Cox <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
akeromi · Sep 29, 2006 · 4050914 · 4050914
1 parent 1a036cd
commit 4050914
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
@@ -2065,8 +2065,9 @@ static int init_dev(struct tty_driver *driver, int idx,
 
 	/* call the tty release_mem routine to clean out this slot */
 release_mem_out:
-	printk(KERN_INFO "init_dev: ldisc open failed, "
-			 "clearing slot %d\n", idx);
+	if (printk_ratelimit())
+		printk(KERN_INFO "init_dev: ldisc open failed, "
+				 "clearing slot %d\n", idx);
 	release_mem(tty, idx);
 	goto end_init;
 }