Re: [PATCH 3/3] tools/power turbostat: allow turbostat to work when aperf is not available

[Len Brown]

> ...add_msr_perf_counter() returns -1

good.  and then add_msr_counter() succeeds because...

> rdmsr returns zero for MSR_IA32_APERF and MSR_IA32_MPERF.

Your patch is a good suggestion -- though it checks for APERF only and
not for MPERF.

We already ran CPUID and cleared has_aperf, so I'm thinking we should
be heading this off earlier.  Let me send you a test patch later today.

thanks,
Len Brown, Intel Open Source Technology Center