Re: [PATCH 01/10] perf tools: Uniquify the event name if there's no other matched event

[Andi Kleen]

On Thu, Jun 07, 2018 at 12:15:04AM +0200, Jiri Olsa wrote:
> Currently by default we try to match the user specified PMU
> name to all PMU units available and use them to aggregate
> all matched PMUs event counts into one 'pattern' event.
> 
> While this is useful for uncore events, it screws up names
> for other events, where this is not desirable, like:
> 
> Before:
>   # perf stat -e cp/cpu-cycles/ kill

I assume you mean cpU/cpu-cycles/
> 
>    Performance counter stats for 'kill':
> 
>            1,573,757      cp/cpu-cycles/
> 
> Keeping the pattern matching logic, but making the name unique
> in case there's no other match found. That fixes the example
> above and hopefully does not screw up anything else.
> 
> After:
>   # perf stat -e cp/cpu-cycles/ kill
> 
>    Performance counter stats for 'kill':
> 
>            1,573,757      cpu/cpu-cycles/


The output is 100% identical?

-Andi