Extern or forward variable declaration at tools/perf/util/hist.h, line 18 References: tools/perf/builtin-annotate.c, line 129 tools/perf/builtin-annotate.c, line 204 tools/perf/builtin-annotate.c, line 245 tools/perf/builtin-report.c, line 293 tools/perf/builtin-report.c, line 310 tools/perf/builtin-script.c, line 856 tools/perf/builtin-script.c, line 856 tools/perf/builtin-script.c, line 904 tools/perf/builtin-script.c, line 904 tools/perf/builtin-script.c, line 950 tools/perf/builtin-script.c, line 950 tools/perf/builtin-script.c, line 1177 tools/perf/builtin-script.c, line 1177 tools/perf/builtin-top.c, line 735 tools/perf/builtin-top.c, line 736 tools/perf/builtin-top.c, line 1547 tools/perf/builtin-top.c, line 1550 tools/perf/builtin-top.c, line 1657 tools/perf/util/hist.c, line 903 tools/perf/util/hist.c, line 2640 tools/perf/util/hist.h, line 18 tools/perf/util/hist.h, line 550 tools/perf/util/intel-pt.c, line 137 tools/perf/util/intel-pt.c, line 159 tools/perf/util/intel-pt.c, line 1110 tools/perf/util/intel-pt.c, line 1112 tools/perf/util/intel-pt.c, line 1145 tools/perf/util/intel-pt.c, line 1571 tools/perf/util/intel-pt.c, line 1571 tools/perf/util/intel-pt.c, line 1603 tools/perf/util/intel-pt.c, line 1956 tools/perf/util/intel-pt.c, line 2065 tools/perf/util/intel-pt.c, line 2996 tools/perf/util/machine.c, line 2216 tools/perf/util/machine.c, line 2216 tools/perf/util/machine.c, line 2362 tools/perf/util/machine.c, line 2362 tools/perf/util/machine.c, line 2500 tools/perf/util/machine.c, line 2500 tools/perf/util/machine.c, line 2502 tools/perf/util/machine.c, line 2502 tools/perf/util/machine.c, line 2711 tools/perf/util/machine.c, line 2711