Error while running ./px4 mainapp.config

I tried to execute PX4 firmware on SnapDragon by using this command`
cd /home/linaro
./px4 mainapp.config

However, I encountered this error.

sh: 1: cannot create /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor: Directory nonexistent
commands file: mainapp.config


| ___ \ \ \ / / / |
| |/ / \ V / / /| |
| __/ / \ / /
| |
| | / /^\ \ ___ |
_| / / |_/

px4 starting.

INFO [logger] logger started (mode=all)
INFO [dataman] Unknown restart, data manager file ‘/home/linaro/dataman’ size is 11403756 bytes
INFO [mavlink] mode: Normal, data rate: 1000000 B/s on udp port 14556 remote port 14550
Sleeping for 1 s; (1000000 us).
pxh> INFO [mavlink] using network interface wlan0, IP: 192.168.1.1
INFO [mavlink] with broadcast IP: 192.168.1.255

Does anyone know how to fix this?
Thanks.

@mcharleb any suggestions?

Here was the answer I got:

This should be dynamic on the Eagle platform. You can only change this when the CPU is active.

You can force the CPU to be active by disabling mpdecision and setting each to be online.
stop mpdecision
echo ‘1’ > /sys/devices/system/cpu/cpu1/online
echo ‘1’ > /sys/devices/system/cpu/cpu2/online
echo ‘1’ > /sys/devices/system/cpu/cpu3/online

Are you using a custom kernel image or have you installed kernel modules of any kind? Would it be possible to conduct your test with the 3.1.3.1 release image available on the Intrinsyc website?