[Bug] ARM 'perf' regression by commit a43cb95d5

[Ming Lei]

On Fri, May 17, 2013 at 5:36 PM, Will Deacon <will.deacon at arm.com> wrote:
>
> It's probably easier if you choose a workload, otherwise it's difficult to
> see what is `correct' and what is broken. For example, your broken output
> seems to be in the smsc95xx driver, so assumedly there's a bunch of
> networking going on whereas your other output is in cpuidle_enter_state.

If all modules are removed, the result will become OK. And if I only insert one
module, the top sample will fall inside the only module, but I am sure
nothing is working on the symbols of the module.

>
> We need an apples-for-apples comparison if you think there's a bug in the
> kernel. Can you try profiling hackbench or something?
>
>> Or could anyone else try to verify the problem on their own environment?
>
> How are you running perf top?

sudo perf top

Thanks
--
Ming Lei