linux-kernel - Re: [PATCH v6 3/5] perf jevents: Add support for parsing perchip/percore events

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Date:   Tue, 1 Sep 2020 11:33:23 +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,
        john.garry@...wei.com
Subject: Re: [PATCH v6 3/5] perf jevents: Add support for parsing
 perchip/percore events



On 8/31/20 2:14 PM, Jiri Olsa wrote:
> On Thu, Aug 27, 2020 at 06:39:56PM +0530, Kajol Jain wrote:
>> Initially, every time we want to add new terms like chip, core thread etc,
>> we need to create corrsponding fields in pmu_events and event struct.
>> This patch adds an enum called 'aggr_mode_class' which store all these
>> aggregation like perchip/percore. It also adds new field 'aggr_mode'
>> to capture these terms.
>> Now, if user wants to add any new term, they just need to add it in
>> the enum defined.
>>
>> Signed-off-by: Kajol Jain <kjain@...ux.ibm.com>
>> ---
>>  tools/perf/pmu-events/jevents.c    | 16 ++++++++++++++++
>>  tools/perf/pmu-events/pmu-events.h |  6 ++++++
>>  2 files changed, 22 insertions(+)
>>
>> diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
>> index b205cd904a4f..f4ad2d403533 100644
>> --- a/tools/perf/pmu-events/jevents.c
>> +++ b/tools/perf/pmu-events/jevents.c
>> @@ -48,6 +48,7 @@
>>  #include <linux/list.h>
>>  #include "jsmn.h"
>>  #include "json.h"
>> +#include "pmu-events.h"
>>  
>>  int verbose;
>>  char *prog;
>> @@ -60,6 +61,7 @@ struct json_event {
>>  	char *pmu;
>>  	char *unit;
>>  	char *perpkg;
>> +	char *aggr_mode;
>>  	char *metric_expr;
>>  	char *metric_name;
>>  	char *metric_group;
>> @@ -74,6 +76,14 @@ struct json_event {
>>  	(void)(&_min1 == &_min2);		\
>>  	_min1 < _min2 ? _min1 : _min2; })
>>  #endif
> 
> please add new line in here
> 

yes, will add.

>> +enum aggr_mode_class convert(const char *aggr_mode)
>> +{
>> +	if (!strcmp(aggr_mode, "PerCore"))
>> +		return PerCore;
>> +	else if (!strcmp(aggr_mode, "PerChip"))
>> +		return PerChip;
>> +	return -1;
> 
> should we display some warning in here?

Sure can do that.

Thanks,
Kajol Jain
> 
> thanks,
> jirka
>