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Date: Sun, 19 Feb 2012 13:51:32 +0100 From: Ingo Molnar <mingo@...e.hu> To: Dimitri Sivanich <sivanich@....com> Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, John Stultz <johnstul@...ibm.com>, x86@...nel.org, linux-kernel@...r.kernel.org, Jack Steiner <steiner@....com> Subject: Re: [PATCH] x86 uv: lower UV rtc clocksource rating * Dimitri Sivanich <sivanich@....com> wrote: > On Fri, Feb 17, 2012 at 01:02:42PM +0100, Ingo Molnar wrote: > > > > * Dimitri Sivanich <sivanich@....com> 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@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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