question about softirqs

[Andi Kleen]

> "If a soft irq is raised in process context, raise_softirq() in
> kernel/softirq.c calls wakeup_softirqd() to make sure that ksoftirqd

softirqd is only used when the softirq runs for too long or when
there are no suitable irq exits for a long time.

In normal situations (not excessive time in softirq) they don't
do anything. 

-Andi

-- 
ak at linux.intel.com -- Speaking for myself only.