Re: "perf script" broken with --call-graph=dwarf on recent kernels?

[Ben Redelings <benjamin.redelings@gmail.com>]

Yeah, I applied the patch you posted, and it works.  Thanks!

-BenRI

On 08/18/2015 03:05 AM, Jiri Olsa wrote:
> On Mon, Aug 17, 2015 at 12:25:29PM -0400, Ben Redelings wrote:
>
> SNIP
>
>> (/home/bredelings/Devel/bali-phy/local/clang-3.7/bin/bali-phy)
>>                    306ce1 empirical_frequencies
>> (/home/bredelings/Devel/bali-phy/local/clang-3.7/bin/bali-phy)
>>                    3330d9 get_smodel
>> (/home/bredelings/Devel/bali-phy/local/clang-3.7/bin/bali-phy)
>>                    4dc133 get_smodels
>> (/home/bredelings/Devel/bali-phy/local/clang-3.7/bin/bali-phy)
>>                    4e02ea create_A_and_T_model
>> (/home/bredelings/Devel/bali-phy/local/clang-3.7/bin/bali-phy)
>>
>> This is more what I was expecting, and similar to what I used to get with
>> --call-graph=dwarf.
>>
>> However, the call chains that I get using DWARF tend to be longer and lead
>> to more accurate results, so I would prefer to use DWARF instead of lbr.  Is
>> there something that I'm doing wrong?  Also, it seems like
>> --call-graph=dwarf successfully records call chains that can be seen via
>> perf report, but somehow 'perf script' doesn't show them.  Could that
>> happen?
>>
>> -BenRI
>>
>> P.S. I'm using debian's kernel 4.1.0 and perf tools on a Core i3-4030.
> hum, it's probably fixed already:
> http://marc.info/?l=linux-kernel&m=143945026316969&w=2
>
> it's currently in Arnaldo's perf/core branch
>
> jirka