* Not to suppress NET kernel messages
@ 2004-08-22 3:10 Josan Kadett
2004-08-22 2:10 ` Randy.Dunlap
0 siblings, 1 reply; 2+ messages in thread
From: Josan Kadett @ 2004-08-22 3:10 UTC (permalink / raw)
To: linux-kernel
I think the messages are rate limited by some code in network subsytem that
disallows a message from being sent to console for more than once. I am
trying to add some source debugging functions with printk, and I just wish
to disable this protection.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Not to suppress NET kernel messages
2004-08-22 3:10 Not to suppress NET kernel messages Josan Kadett
@ 2004-08-22 2:10 ` Randy.Dunlap
0 siblings, 0 replies; 2+ messages in thread
From: Randy.Dunlap @ 2004-08-22 2:10 UTC (permalink / raw)
To: Josan Kadett; +Cc: linux-kernel
On Sun, 22 Aug 2004 05:10:36 +0200 Josan Kadett wrote:
| I think the messages are rate limited by some code in network subsytem that
| disallows a message from being sent to console for more than once. I am
| trying to add some source debugging functions with printk, and I just wish
| to disable this protection.
Yes, net/core/utils.c, net_ratelimit() function is used to determine
if messages should be printed or suppressed. It returns 1 if the
message should be printed, 0 to suppress a message. Usage is like this:
if (net_ratelimit()) /* print if non-0 */
printk(KERN_DEBUG "printing some message\n");
If you want to print all messages (!) and you aren't worried about
DoS or overflowing logs etc., just change the net_ratelimit() function
to return 1 always... and stand back. Warning, caveat emptor, user beware,
etc. Void where prohibited.
--
~Randy
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