On 26/06/15 16:41, Arnaldo Carvalho de Melo wrote:
>> Another thing, the intel_bts implementation does not support
>> "instructions" samples because there is no timing information to
>> use to create periodic samples. But callchains are added only
>> to "instructions" samples so there are no callchains in 'perf report'
>> for intel_bts. The call information is still available for
>
> Humm, so IOW, what you say is that we should refuse to run 'record' when
> asking for callchains and intel_bts?
'record' can record other events at the same time which can have callchains.
e.g.
perf record -g --per-thread -e intel_bts//u,branch-misses:u ls
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