1. 根目录:
2. tools
3. perf
4. util
5. include
6. asm
7. cpufeature.h

#ifndef PERF_CPUFEATURE_H
#define PERF_CPUFEATURE_H

/* cpufeature.h ... dummy header file for including arch/x86/lib/memcpy_64.S */

#define X86_FEATURE_REP_GOOD 0

#endif	/* PERF_CPUFEATURE_H */