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Driver compile with profiling option

Dae Chol You
Note: This was originally posted on 10th May 2012 at http://forums.arm.com

Hello!

I am trying to use Mali GPU performance analyzer.

At first, I thought that performance analyzer can be connected to target embedded device by installing "libmaliinstr.so" library file to target embedded platform.

But it didn't work.

In user guide, there is a requirement that an instrumented driver should be used for profiling.

Does it mean Mali Linux kernel device driver should be compiled with profiling option? (USING_PROFILING in Makefile)

When I try this, I get error messages.

FIrst,  mali_cinstr_profiling_events_m200.h header file doesn't exist , it is included by mali_kernel_profiling.h

And some undeclared define values make problem

drivers/media/video/samsung/mali/common/mali_kernel_MALI200.c:646: error: 'MALI_PROFILING_EVENT_TYPE_START' undeclared (first use in this function)

drivers/media/video/samsung/mali/common/mali_kernel_MALI200.c:718: error: 'MALI_PROFILING_EVENT_TYPE_STOP' undeclared (first use in this function)







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  • Note: This was originally posted on 10th May 2012 at http://forums.arm.com

    Hi Yoda,

       As the user guide mentions, an instrumented driver is needed for profiling. The instrumented drivers requires modifications to both the user space and kernel drivers. The drivers you have modified belong to the kernel space. 

    These drivers are typically not included in release versions and you would have to request them from the silicon vendor. Could you let us know what performance problems you are facing so we can better advise you?

    Thanks
    Karthik
Reply
  • Note: This was originally posted on 10th May 2012 at http://forums.arm.com

    Hi Yoda,

       As the user guide mentions, an instrumented driver is needed for profiling. The instrumented drivers requires modifications to both the user space and kernel drivers. The drivers you have modified belong to the kernel space. 

    These drivers are typically not included in release versions and you would have to request them from the silicon vendor. Could you let us know what performance problems you are facing so we can better advise you?

    Thanks
    Karthik
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