bool GetValidThreadsFromThreadString(const std::string& tid_str, std::set<pid_t>* tid_set);
bool CheckPerfEventLimit();
+bool GetMaxSampleFrequency(uint64_t* max_sample_freq);
bool CheckSampleFrequency(uint64_t sample_freq);
bool CheckKernelSymbolAddresses();
#endif
ArchType GetMachineArch();
+void PrepareVdsoFile();
#endif // SIMPLE_PERF_ENVIRONMENT_H_