linux-kernel - Re: [RFC v2 3/5] perf jevents: Add support for parsing perchip/percore events

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Date:   Tue, 14 Jul 2020 14:42:15 +0530
From:   kajoljain <kjain@...ux.ibm.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     acme@...nel.org, peterz@...radead.org, mingo@...hat.com,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        pc@...ibm.com, namhyung@...nel.org, ak@...ux.intel.com,
        yao.jin@...ux.intel.com, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org, irogers@...gle.com,
        maddy@...ux.ibm.com, ravi.bangoria@...ux.ibm.com,
        anju@...ux.vnet.ibm.com, kan.liang@...ux.intel.com,
        nasastry@...ibm.com
Subject: Re: [RFC v2 3/5] perf jevents: Add support for parsing
 perchip/percore events



On 7/13/20 12:25 AM, Jiri Olsa wrote:
> On Tue, Jul 07, 2020 at 05:53:12PM +0530, Kajol Jain wrote:
>> Added the "PerChip" field  in enum so that perf knows they are
>> per chip events.
>>
>> Added the "PerCore" field in enum so that perf knows they are
>> per core events and add these fields to pmu_event structure.
>>
>> Similar to the way we had "PerPkg field
>> to specify perpkg events.
>>
>> Signed-off-by: Kajol Jain <kjain@...ux.ibm.com>
>> ---
>>  tools/perf/pmu-events/jevents.c    | 8 +++++++-
>>  tools/perf/pmu-events/pmu-events.h | 4 +++-
>>  2 files changed, 10 insertions(+), 2 deletions(-)
>>
>> diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
>> index b2f59f0af63d..1f65047db000 100644
>> --- a/tools/perf/pmu-events/jevents.c
>> +++ b/tools/perf/pmu-events/jevents.c
>> @@ -54,13 +54,19 @@ int verbose;
>>  char *prog;
>>  
>>  enum aggr_mode_class {
>> -	PerPkg = 1
>> +	PerChip = 0,
> 
> is there a reason for the values? just wonder if it's wise to have PerChip == 0,
> and why you would not continue with forward when PerPkg is 1

Hi Jiri,
     Yes, there is no reason for having particular values, It just added to get which parameter
we are referring. I can sure continue it after Perpkg.

Thanks,
Kajol Jain

> 
> jirka
> 
>> +	PerPkg = 1,
>> +	PerCore = 2
>>  };
>>  
> 
> SNIP
>