Extern or forward variable declaration tools/perf/ui/gtk/gtk.h, line 55 [usage...] tools/perf/util/db-export.h, line 22 [usage...] tools/perf/util/evsel.h, line 15 [usage...] tools/perf/util/machine.h, line 14 [usage...] tools/perf/util/map.h, line 29 [usage...] tools/perf/util/parse-events.h, line 15 [usage...] tools/perf/util/stat.h, line 111 [usage...] tools/perf/util/tool.h, line 12 [usage...] tools/perf/util/top.h, line 12 [usage...] Structure tools/perf/util/evsel.h, line 90 [usage...]