PERF_REG_ARM64_LR 25 arch/arm64/kernel/perf_regs.c if ((u32)idx == PERF_REG_ARM64_LR) PERF_REG_ARM64_LR 83 tools/perf/arch/arm64/include/perf_regs.h case PERF_REG_ARM64_LR: PERF_REG_ARM64_LR 75 tools/perf/arch/arm64/util/unwind-libunwind.c return PERF_REG_ARM64_LR;