PERF_REG_X86_BX     7 arch/x86/include/uapi/asm/perf_regs.h 	PERF_REG_X86_BX,
PERF_REG_X86_BX     7 tools/arch/x86/include/uapi/asm/perf_regs.h 	PERF_REG_X86_BX,