Re: [PATCH] x86 uv: lower UV rtc clocksource rating

[Ingo Molnar]

* Dimitri Sivanich <sivanich@xxxxxxx> wrote:

> On Fri, Feb 17, 2012 at 01:02:42PM +0100, Ingo Molnar wrote:
> > 
> > * Dimitri Sivanich <sivanich@xxxxxxx> wrote:
> > 
> > > Lower the rating of the UV rtc clocksource to just below that of the tsc.
> > 
> > This changelog is deficient for obvious reasons, mind updating 
> > it?
> >
> OK.  Is this sufficient?
> 
> 
> Lower the rating of the UV rtc clocksource to just below that of the tsc.
> 
> Reading the tsc clocksource has lower latency than reading the rtc, so favor
> it in situations where it is synchronized and stable.  When the tsc is
> unsynchronized, the rtc needs to be the chosen clocksource.

Yeah, perfect, thanks.

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/