How to use oprofile in i.MX6

[ko-hey]

Hi all

I'm trying to use oprofile with i.MX6.

When I try to use oprofile, it doesn't work properly.

Also I tried following command and got following message.

# operf openssl speed -evp aes-256 cbc
Your kernel's Performance Events Subsystem does not support your processor type.

As a above result, I think that i.MX6 doesn't support a oprofile.

According to the http://oprofile.sourceforge.net/doc/perf_events.html, when user get the message, user need to install OProfile 0.9.9.

Do I need to install OProfile 0.9.9 when I use oprofile with i.MX6 ?

Ko-hey

[Yuri · Accepted solution]

Hello,

   According to NXP Linux RM, oprofile works on ARM9 and ARM11Cortex-A8 based platforms.

Looks like the kernel currently does not support events and oprofile properly on the imx6 platform.

Have a great day,

Yuri

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[ko-hey]

Hi Yuri

Thank you for reply.

So how can user realize the oprofile ?

Is there any substituted way for i.MX6 ?

Ko-hey

[Yuri]

Hello,

 For i.MX6 only MMDC profiler may be used.

Regards,

Yuri.

[ko-hey]

Hi

Thank you for suggestion.

How about using OProfile 0.9.7 ?

According to the following page, OProfile 0.9.7 can support cortex-A9.

OProfile - A System Profiler for Linux (News) 

Ko-hey

[Yuri]

Hello,

  You may try OProfile 0.9.7.

Regards,

Yuri.

[ko-hey]

Hi Yuri

I tried 0.9.9 and it works well.

Thank you for your cooperation.

Ko-hey

[Abi__1289]

Hi Ko-hey and Yuri ,

I am trying enable Oprofile (operf ..etc)  for the imx6q board , In the yocto build I am getting by default  

oprofile_1.3.0 version after the build . 

when I am trying to use operf in kernel getting below error for almost all operf commands 

Unexpected error running operf: Invalid argument

How to solve this issue ??

Thanks 

ABhishek