> > testing the patch complaining about, AND one that seems like it could be
> > addressed by using IRQ disabling as a latency guard in addition to spinlocks.
>
> I dont believe anyone has tested the driver hard with pre-empt. Its not that
> this driver can't be fixed. Its that this is one tiny example of maybe
> thousands of other similar flaws lurking. There is no obvious automated way
> to find them either.
So.... you have shown performance problem in one driver. Maybe *bad*
performance problem, but only performance problem. There may be other
performance problems out there. And what?
Pavel
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