read mostly locks and interrupt handlers

Murat Balaban murat at enderunix.org
Wed Apr 21 14:29:05 UTC 2010


Hello net@ folks,

I came across some performance problems with BPF on 10G links, and have
been investigating more on this.

The first thing I noticed is that, bpf_if structures are protected with
a mutex. I was wondering if that has been done for a special purpose,
i.e. rmlocks are not allowed to run in interrupt context or so?


--
Murat



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