From: Hannes Frederic Sowa <[email protected]> Date: Thu, 28 Nov 2013 23:19:26 +0100
> I don't really understand why we distinguish between _BH and plain ICMP stat > calls then. > > The non-_BH versions deactivate interrupts when updating the per-cpu counter. This level of distinction exists back in the day where we did per-cpu counters by hand. We used to have a BH counter and a non-BH counter for each statistic and it really helped performance wise. These days most of that may not be so relevant any more. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
