Messages in this thread | | | Date | Thu, 29 Mar 2001 10:15:30 -0700 | From | Khalid Aziz <> | Subject | Re: rate limiting error messages |
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Eli Carter wrote: > > Can someone point me to a "standard way" of doing rate limiting of error > messages in the kernel? > > TIA, > > Eli > -----------------------. Rule of Accuracy: When working toward > Eli Carter | the solution of a problem, it always > eli.carter(at)inet.com `------------------ helps if you know the answer.
Here is how it is done in IA-64 kernel:
static int within_logging_rate_limit (void) { static unsigned long count, last_time;
if (count > 5 && jiffies - last_time > 5*HZ) count = 0; if (++count < 5) { last_time = jiffies; return 1; } return 0;
}
If this fundction returns 0, error messages have been rate limited. This code is not MP-safe. So, if you need your code to be MP-safe, you may need to rewrite it somewhat.
-- Khalid
==================================================================== Khalid Aziz Linux Development Laboratory (970)898-9214 Hewlett-Packard khalid@fc.hp.com Fort Collins, CO - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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