On 16 Oct 2006 15:48:02 +0200
Andi Kleen <[email protected]> wrote:
> Andrew Morton <[email protected]> writes:
> >
> > Is there any actual need to hold xtime_lock while doing the port IO? I'd
> > have thought it would suffice to do
> >
> > temp = port_io
> > write_seqlock(xtime_lock);
> > xtime = muck_with(temp);
> > write_sequnlock(xtime_lock);
> >
> > ?
>
> That would be a good idea in general. The trouble is just that whatever race
> is there will be still there then, just harder to trigger (so instead of
> every third boot it will muck up every 6 weeks). Not sure that is
> a real improvement.
>
Confused. What race are you referring to?
This is addressing a starvation problem which is due to the slowness of the
port-io (iirc).
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