PERF_REG_RISCV_A1 19 arch/riscv/include/uapi/asm/perf_regs.h PERF_REG_RISCV_A1, PERF_REG_RISCV_A1 19 tools/arch/riscv/include/uapi/asm/perf_regs.h PERF_REG_RISCV_A1,