Re: [PATCH 00/11] perf tool: Add PERF_SAMPLE_READ sample read support

[David Ahern]

On 10/26/12 10:25 AM, Namhyung Kim wrote:
> 2012-10-26 (ê), 10:14 -0600, David Ahern:
> > On 10/26/12 9:39 AM, Namhyung Kim wrote:
> > > > hm, thats the unique sample_type issue again ;) Once we set
> > > > PERF_SAMPLE_READ for event or group, we need to set it for
> > > > all other events in session, otherwise the report fails
> > >
> > > Sorry, I don't understand why we need to set it for all events.  Just
> > > setting it for a group is not sufficient?  Please shed some light on
> > > this.
> >
> > perf does not support multiple sample_types -- all events in the session
> > need to use the same one.
>
> Can I ask why? :)

Of course:
https://lkml.org/lkml/2011/8/15/6
https://lkml.org/lkml/2011/9/29/502

David
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