Re: [RFC 1/2] softirq: Defer net rx/tx processing to ksoftirqd context

[David Miller]

From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Thu, 11 Jan 2018 17:32:04 +0100

> You just introduced a 2ms preempt-disable region I think, that's not
> cool for PREEMPT and a plain bug on PREEMPT_RT.

I'd just like to know what the difference is between ksoftirqd running
softirq work for 2ms and the real softirq context doing it.  The
latter already has this "2ms preempt-disable region" of sorts, right?