Re: [PATCH v6 3/7] perf jevents: Support more event fields

[Jing Zhang]

在 2023/8/7 下午5:24, John Garry 写道:
> On 07/08/2023 08:51, Jing Zhang wrote:
>> The usual event descriptions are "event=xxx" or "config=xxx", while the
>> event descriptions of CMN are "type=xxx, eventid=xxx" or more complex.
>>
>> $cat /sys/bus/event_source/devices/arm_cmn_0/events/hnf_cache_fill
>> type=0x5,eventid=0x3
>>
>> When adding aliases for events described as "event=xxx" or "config=xxx",
>> EventCode or ConfigCode can be used in the JSON files to describe the
>> events. But "eventid=xxx, type=xxx" cannot be supported at present.
>>
>> If EventCode and ConfigCode is not added in the alias JSON file, the
>> event description will add "event=0" by default. So, even if the event
>> field is added to supplement "eventid=xxx" and "type=xxx", the final
>> parsing result will be "event=0, eventid=xxx, type=xxx".
>>
>> Therefore, when EventCode and ConfigCode are missing in JSON, "event=0" is
>> no longer added by default. EventIdCode and Type are added to the event
>> field, and ConfigCode is moved into the event_field array which can also
>> guarantee its original function.
>>
>> Signed-off-by: Jing Zhang <renyu.zj@xxxxxxxxxxxxxxxxx>
> 
> I'll let Ian check this change as he is more familiar with this code.
> 

Ok, thanks!