PERF_REG_X86_FS    20 arch/x86/include/uapi/asm/perf_regs.h 	PERF_REG_X86_FS,
PERF_REG_X86_FS    20 tools/arch/x86/include/uapi/asm/perf_regs.h 	PERF_REG_X86_FS,