March 2, 2022
2:37 p.m.
Hello, I have compiled a pretty recent Linux kernel mostly basing the configuration on the older kernel. I am now testing out the event tracing system but seem to be having a problem. Having enabled all events with # echo *:* > /sys/kernel/debug/tracing/set_event As described here [1], I expect that dmesg shows me some traces but there aren't any. My dmesg logs are empty(just the same as with not having enabled the events). What could I be missing? Am I checking the wrong place for the trace? Are there no tracepoints getting hit? Any hits and pointers would be much appreciated. Regards, David