perf_callchain   1382 arch/x86/events/intel/ds.c 		data->callchain = perf_callchain(event, iregs);
perf_callchain   1543 arch/x86/events/intel/ds.c 		data->callchain = perf_callchain(event, iregs);
perf_callchain   1195 include/linux/perf_event.h extern struct perf_callchain_entry *perf_callchain(struct perf_event *event, struct pt_regs *regs);
perf_callchain   6601 kernel/events/core.c 			data->callchain = perf_callchain(event, regs);