tools/testing/selftests/ublk/trace/count_ios_per_tid.bt

/*
 * Tabulates and prints I/O completions per thread for the given device
 *
 * $1: dev_t
*/
tracepoint:block:block_rq_complete
{
	if (args.dev == $1) {
		@[tid] = count();
	}
}