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Date: Tue, 12 May 2009 22:28:48 -0700 (PDT)
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To: paulus@samba.org
Subject: Re: question about softirqs
From: David Miller <davem@davemloft.net>
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From: Paul Mackerras <paulus@samba.org>
Date: Wed, 13 May 2009 15:15:34 +1000

> David Miller writes:
> 
>> I fully expected us to be, at this point, talking about putting the
>> pending softirq check back into the trap return path :-/
> 
> Would that actually do any good, in the case where the system has
> decided that ksoftirqd is handling soft irqs at the moment?

Even if ksoftirqd is running, we check and run pending softirqs from
trap return.

Sure, I imagine we could re-enter this "ksoftirq blocked by highprio
thread" situation if we get flooded every single time over and over
again.