arch/arm/include/asm/cpufeature.h
arch/arm64/include/asm/cpufeature.h
arch/mips/include/asm/cpufeature.h
arch/powerpc/include/asm/cpufeature.h
arch/s390/include/asm/cpufeature.h
arch/x86/include/asm/cpufeature.h
include/linux/cpufeature.h
tools/perf/util/include/asm/cpufeature.h