Re: [PATCH V5 4/8] perf/x86/intel/uncore: add new data structures for free running counters

From: Stephane Eranian
Date: Fri Jan 19 2018 - 15:51:31 EST


On Fri, Jan 19, 2018 at 12:50 PM, Stephane Eranian <eranian@xxxxxxxxxx> wrote:
> On Fri, Jan 19, 2018 at 12:24 PM, Andi Kleen <ak@xxxxxxxxxxxxxxx> wrote:
>>> Oh, think a bit more.
>>> I think we cannot do the same thing as we did for CPU PMU's fixed counters.
>>>
>>> The counters here are free running counters. They cannot be start/stop.
>>
>> Yes free running counter have completely different semantics. They
>> need a separate event code.
>>
> Are you saying, you can be shared with no multiplexing?
>
Obviously not you, but the counters ;-)

>> -Andi