I am using dragon board 820c. Its running “Debian GNU/Linux buster/sid”.
Kernal: Linux linaro-alip 4.11.0-qcomlt.
When I try to run perf in terminal, it says exec:perf_4.11: not found. E: linux-perf-4.11 is not installed.
What should I do?
I checked whether the perf events are enabled in Linux Kernel and it is fine. Except ,
$ cat /proc/sys/kernel/perf_event_paranoid
Some document says it has to be 1 and some says it has to be -1. But I could not change it with sudo permission.
Is it possible to be super user, what is the password?