Re: [PATCHv3 0/3] perf tool: Add new event group management

[Stephane Eranian]

On Fri, Jul 6, 2012 at 3:32 AM, Ulrich Drepper <drepper@xxxxxxxxx> wrote:
> On Thu, Jul 5, 2012 at 12:15 PM, Stephane Eranian <eranian@xxxxxxxxxx> wrote:
>> I don't understand why you actually need the :2 suffix. There can
>> only be one leader. So assume it is the first one. Users have to
>> know the first one is the leader which seems like a natural thing
>> to do for me. It would make you syntax less ugly than it already
>> is.
>
> In a blue sky world I would have done this.  In fact, this is what I
> tried before reading the sources to find out there is no group support
> so far.  But given that multiple -e options already have a meaning I
> would be hesitant to change this.

That's why I said you activate grouping via -e only when you have
the --group-events or --group-reads option in front. That would
not change the meaning of the multiple -e when none of those
group options are specified.
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