Re: [PATCH 2/3] perf, tool: Enable grouping logic for parsed events

From: Namhyung Kim
Date: Mon Jul 02 2012 - 21:02:50 EST


On Mon, 2 Jul 2012 12:10:10 +0200, Jiri Olsa wrote:
> On Mon, Jul 02, 2012 at 11:13:56AM +0900, Namhyung Kim wrote:
>> On Fri, 29 Jun 2012 11:08:26 +0200, Jiri Olsa wrote:
>> > It's possible to use standard event modifier for a group, which spans
>> > over all events in the group and overrides any event modifier settings,
>> > for example:
>> >
>> > # perf record -r '{faults:k,cache-references}:u'
>> >
>> > resulting in ':u' modifier being used for both 'faults' and 'cache-references'
>> > events, regardless of their modifier setup (':k' for faults event).
>> >
>>
>> So the faults event would get only 'u' for the modifier not 'uk', right?
>
> right
>

I was thinking about the combining the modifiers - i.e. make it 'uk'
above. Not sure it's useful in general, but something like "adding 'p'
to the leader (only)" looks good to have IMHO.

Thanks,
Namhyung
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