Re: tun.c patch to fix "smp_processor_id() in preemptible code"

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

Lee Revell <rlrevell@xxxxxxxxxxx> wrote:
> 
> I looked at Robert Love's book and I am still unclear on the use of
> do_softirq above.  To reiterate the question:  why does netif_rx_ni have
> to manually flush any pending softirqs on the current proccessor after
> doing the rx?  Is this just a performance hack?

Yes it allows the packet to be processed immediately.
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