PERF_REG_POWERPC_R21   27 arch/powerpc/include/uapi/asm/perf_regs.h 	PERF_REG_POWERPC_R21,
PERF_REG_POWERPC_R21   27 tools/arch/powerpc/include/uapi/asm/perf_regs.h 	PERF_REG_POWERPC_R21,