Extern or forward variable declaration at tools/perf/util/trace-event.h, line 11 References: tools/perf/builtin-kmem.c, line 302 tools/perf/builtin-kmem.c, line 326 tools/perf/builtin-kvm.c, line 84 tools/perf/builtin-kvm.c, line 685 tools/perf/builtin-kvm.c, line 728 tools/perf/builtin-lock.c, line 802 tools/perf/builtin-lock.c, line 833 tools/perf/builtin-mem.c, line 15 tools/perf/builtin-mem.c, line 62 tools/perf/builtin-mem.c, line 113 tools/perf/builtin-sched.c, line 122 tools/perf/builtin-sched.c, line 1251 tools/perf/builtin-sched.c, line 1343 tools/perf/builtin-sched.c, line 1369 tools/perf/builtin-sched.c, line 1382 tools/perf/builtin-sched.c, line 1395 tools/perf/builtin-sched.c, line 1404 tools/perf/builtin-sched.c, line 1417 tools/perf/builtin-sched.c, line 1422 tools/perf/builtin-script.c, line 475 tools/perf/builtin-script.c, line 519 tools/perf/util/header.c, line 2885 tools/perf/util/header.c, line 2919 tools/perf/util/header.c, line 2975 tools/perf/util/header.c, line 3001 tools/perf/util/header.c, line 3023 tools/perf/util/header.c, line 3033 tools/perf/util/header.c, line 3117 tools/perf/util/header.c, line 3145 tools/perf/util/trace-event.h, line 11