Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 10 Jan 2003 11:05:47 +0000 | From | Dave Jones <> | Subject | Re: detecting hyperthreading in linux 2.4.19 |
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On Fri, Jan 10, 2003 at 08:05:07AM +0100, Mikael Pettersson wrote:
> If the kernel has sched_setaffinity() or some other way of binding a process > to a given CPU (as numbered by the kernel, which may or may not be related > to any physical CPU numbers), then this will do it: execute CPUID on each > CPU and check the initial APIC ID field. If you find one that's non-zero, > then HT is enabled.
That's a horrible way of reimplementing /dev/cpu/x/cpuid 8-)
Dave
-- | Dave Jones. http://www.codemonkey.org.uk | SuSE Labs - 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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