Right after writing "function_graph" to "current_tracer", the system freezes and cannot do anything.
The same problem happens when I tested to enable "function" tracer as follows:
root@raspberrypi3:/sys/kernel/debug/tracing# echo function > current_tracer
Except for those, it seems that other tracers work fine.
It may not be an important issue for webOS OSE, but I'm just leaving a note for later reference.
The Linux kernel inside webOS OSE doesn't work with ftrace feature as follows:
Right after writing "function_graph" to "current_tracer", the system freezes and cannot do anything. The same problem happens when I tested to enable "function" tracer as follows:
Except for those, it seems that other tracers work fine.
It may not be an important issue for webOS OSE, but I'm just leaving a note for later reference.