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From: David Miller <davem@davemloft.net>
Subject: Re: [RFC PATCH 0/2] net: threadable napi poll loop
Date: Tue, 10 May 2016 11:51:38 -0400 (EDT)
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Tue, 10 May 2016 07:29:50 -0700

> We already have ksoftirqd to normally cope with the case you are
> describing.
> 
> If it is not working as intended, please identify the bugs and fix them,
> instead of adding yet another tests in fast path and extra complexity in
> the stack.

+1

Indeed, if ksoftirqd is not doing it's job, please fix it.  It is designed
exactly to deal with the problems described here.