Messages in this thread | | | Date | Mon, 27 Nov 2006 11:00:24 -0800 (PST) | From | Christoph Lameter <> | Subject | Re: [patch] x86: unify/rewrite SMP TSC sync code |
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On Fri, 24 Nov 2006, Andi Kleen wrote:
> The trouble is that people are using the RDTSC anyways even if the > kernel doesn't. So some synchronization is probably a good idea.
It is better to simply leave TSC alone if unsynchronized. If TSCs appear to be in sync (through some sporadic "synchronization") then people will be tempted to use RDTSC because it seems to work/ However, RDTSC will sporadically yield incoherent values (i.e. time earlier than last TSC read) if we have no full synchronization. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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