Messages in this thread |  | | Date | Tue, 17 Sep 2002 16:51:31 -0700 (PDT) | Subject | Re: do_gettimeofday vs. rdtsc in the scheduler | From | "David S. Miller" <> |
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From: Andi Kleen <ak@suse.de> Date: Wed, 18 Sep 2002 01:58:38 +0200
The local APIC timer is specified in the Intel Manual volume 3 for example. It's an optional feature (CPUID), but pretty much everyone has it.
It is internal or external to the processor? Ie. can it be in the southbridge or something? If yes, then I still hold my point.
You shouldn't have to PIO to get a reliable timer value. - 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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