PERF_REG_CSKY_SP   16 tools/perf/arch/csky/include/perf_regs.h #define PERF_REG_SP	PERF_REG_CSKY_SP
PERF_REG_CSKY_SP   49 tools/perf/arch/csky/include/perf_regs.h 	case PERF_REG_CSKY_SP: