rdclock 554 tools/perf/builtin-stat.c t0 = rdclock(); rdclock 600 tools/perf/builtin-stat.c t1 = rdclock(); rdclock 308 tools/perf/util/synthetic-events.c t = rdclock(); rdclock 322 tools/perf/util/synthetic-events.c if ((rdclock() - t) > timeout) {