Extern or forward variable declaration at include/linux/trace_events.h, line 54 References: include/linux/trace_events.h, line 54 include/linux/trace_events.h, line 57 include/linux/trace_events.h, line 126 include/linux/trace_events.h, line 135 include/linux/trace_events.h, line 142 include/linux/trace_events.h, line 143 include/linux/trace_events.h, line 353 include/trace/trace_events.h, line 386 include/trace/trace_events.h, line 386 include/trace/trace_events.h, line 395 include/trace/trace_events.h, line 411 kernel/trace/trace.c, line 2843 kernel/trace/trace.c, line 3677 kernel/trace/trace.c, line 3677 kernel/trace/trace.c, line 3704 kernel/trace/trace.c, line 3705 kernel/trace/trace.c, line 3708 kernel/trace/trace.c, line 4345 kernel/trace/trace.c, line 4376 kernel/trace/trace.c, line 4402 kernel/trace/trace.c, line 4431 kernel/trace/trace_eprobe.c, line 267 kernel/trace/trace_eprobe.c, line 271 kernel/trace/trace_events_synth.c, line 314 kernel/trace/trace_functions_graph.c, line 974 kernel/trace/trace_functions_graph.c, line 1105 kernel/trace/trace_functions_graph.c, line 1269 kernel/trace/trace_functions_graph.c, line 1274 kernel/trace/trace_kprobe.c, line 1468 kernel/trace/trace_kprobe.c, line 1498 kernel/trace/trace_syscalls.c, line 128 kernel/trace/trace_syscalls.c, line 175 kernel/trace/trace_uprobe.c, line 1019