Messages in this thread |  | | Date | Thu, 28 Nov 2013 18:15:54 -0500 (EST) | Subject | Re: [PATCH] inet: further fixes of possible seqlock deadlocks | From | David Miller <> |
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From: Hannes Frederic Sowa <hannes@stressinduktion.org> 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.
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