Hello,

I've successfully built and booted Linux 2.6.19.2 following the instructions by DrOctavius and others. I am also able to run my application.

Now I'd like to gather some profiling information on my application; I built it with the -pg option and ran it on the board. After processing the gmon.out with gprof on the host I get correct call graph information but the times for all functions are reported to be 0.00. This is despite running the application for several minutes.

I also checked and confirmed that I've set the kernel options:
CONFIG_PROFILING=y
CONFIG_OPROFILE=y

Has anybody successfully used gprof on this board with this BSP? Is there anything I'm missing out?

I have also tried using a cross compiled version of oprofile. However when I try running 'opcontrol --init' and 'opcontrol --start' on the board I get the following error messages:

grep: /etc/mtab: No such file or directory
mount: Mounting nodev on /dev/oprofile failed: Device or resource busy
Kernel support not available, missing opcontrol --init as root?

I checked and the /dev/oprofile directory does exist and looks to be populated with reasonable data.

Does anyone have suggestions on what I can try?

Regards
M.