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);