Hi Stephane,
I have CONFIG_X86_PERFMON_INTEL_NHM=y. So it will get built into the
kernel. Despite that, the right PMU module is not being loaded. I have
CONFIG_X86_PERFMON_INTEL_ARCH=y too. Is that causing a conflict?

-- Ananth




On Sat, Apr 18, 2009 at 2:14 AM, stephane eranian
<eran...@googlemail.com> wrote:
> On Sat, Apr 18, 2009 at 2:16 AM, Ananth <ananth.nara...@gmail.com> wrote:
>> Thanks Stephane,
>> pfmon -I shows Nehalem. But /sys/*/model shows Intel architectural. I
>> guess that is where the problem is. :)
>>
>> $./pfmon -I
>> detected host CPUs:  8-way 1596MHz/8.0MB -- Intel(R) Core(TM) i7 CPU
>> 965 @ 3.20GHz (stepping 4)
>> detected pfmon  PMU model: Intel Nehalem
>> detected libpfm PMU model: Intel Nehalem
>> max counters/set: 16
>> supported pfmon PMU models: [AMD64] [Pentium 4] [Intel Core] [Intel
>> Atom] [Intel Nehalem] [Intel architectural PMU]
>> supported sampling modules: [inst-hist] [detailed] [compact] [raw]
>> pfmlib version: 3.8
>> kernel perfmon version: 2.82
>> kernel clock resolution: 1ns (1000000000Hz)
>> host kernel architecture: x86_64
>>
>> $cat  /sys/kernel/perfmon/pmu_desc/model
>> Intel architectural
>>
> Yes, that's your problem. Did you install the kernel modules (make
> modules_install)?
> Also make you you've enabled Nehalem support in the kernel
> CONFIG_X86_PERFMON_INTEL_NHM.
>

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