Re: [PATCH V2 1/9] perf tools: add test for reading object code

[Adrian Hunter <adrian.hunter@intel.com>]

On 31/07/2013 8:46 p.m., Arnaldo Carvalho de Melo wrote:
> Em Wed, Jul 31, 2013 at 02:28:33PM -0300, Arnaldo Carvalho de Melo escreveu:
>> Still investigating, but the attached patch is needed to handle such
>> failure cases:
>
>> [root@zoo ~]# perf test 21
>> 21: Test object code reading                               : FAILED!
>> [root@zoo ~]# perf test -v 21
>
> Lowering the freq to 4kHz gets me to where I think you was at this
> point:
>
> [root@zoo ~]# perf test -v 21
> 21: Test object code reading                               :
> --- start ---
> Looking at the vmlinux_path (6 entries long)
> symsrc__init: cannot get elf header.
> Using /lib/modules/3.11.0-rc2+/build/vmlinux for symbols
> Parsing event 'cycles'
> Reading object code for memory address: 0xffffffff8101ce7d
> File is: /lib/modules/3.11.0-rc2+/build/vmlinux
> On file address is: 0xffffffff8101ce7d
> dso__data_read_offset failed
> ---- end ----
> Test object code reading: FAILED!
> [root@zoo ~]#
>
> I.e. we need the follow on patches to fix this issue, right?

Yes.  It is using an "identity" map so the memory address and on-file 
address are the same - which doesn't work of course.

>
> I'll merge my changes with your first patch and continue from there.

Please take V3.