samalba

echo workqueue:workqueue_queue_work > /sys/kernel/debug/tracing/set_event
cat /sys/kernel/debug/tracing/trace_pipe > out.txt
(Leave it running a couple of seconds, then Ctrl+C; this is just to flush the buffer)
cat /sys/kernel/debug/tracing/trace_pipe > out.txt
(Leave it running a couple of seconds, then Ctrl+C; this is to recover the data)
cut -d- -f2 out.txt | awk '{print $1}' | sort | uniq -c | sort -n