Re: Udelay and new CPUs

From: H. Peter Anvin (hpa@www.transmeta.com)
Date: Thu Jan 20 2000 - 22:28:59 EST

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Followup to: <20000120192410.C408@pcep-jamie.cern.ch>
By author: Jamie Lokier <lkd@tantalophile.demon.co.uk>
In newsgroup: linux.dev.kernel
>
> On the TM3120 and TM5400, does RDTSC count VLIW cycles or x86 cycles?
> :-)
>

There are no "x86 cycles" on Crusoe, so it counts VLIW cycles. In
fact, on TM5400 it counts *nominal* cycles, since the actual cycle
length is variable (due to LongRun).

-hpa

-- <hpa@transmeta.com> at work, <hpa@zytor.com> in private! "Unix gives you enough rope to shoot yourself in the foot."

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