PERF_REG_RISCV_PC   19 tools/perf/arch/riscv/include/perf_regs.h #define PERF_REG_IP	PERF_REG_RISCV_PC
PERF_REG_RISCV_PC   25 tools/perf/arch/riscv/include/perf_regs.h 	case PERF_REG_RISCV_PC: