On 09/10/2013 05:50 PM, Theodore Ts'o wrote:
>
> Right now, if get_cycles() returns 0, we fall back to only mixing in
> the IP register from the interrupt plus the jiffies counter. The
> platforms where get_cycles returns 0 is:
>
> - User mode Linux
UML (on x86) should be able to use RDTSC just fine; it might be
meaningless for anything *other* than random though...
-hpa
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