Re: [BUG][2.6.8.1] serial driver hangs SMP kernel, but not the UPkernel

Alan Cox
2004-11-02T00:12:17Z

On Llu, 2004-11-01 at 14:10, Paul Fulghum wrote:
> I was thought it was to speed processing if the
> caller was already in process context. Maybe the
> real intentions are lost to history.

It was added way back by Ted to improve performance when dealing with
low latency requirements for I/O.

> Moving forward, Alan stated that the flip
> routine should not be called in interrupt context.
> His last post concerning some transient state
> of low_latency has confused me.

You were correct about that