PERF_REG_ARM_SP 16 tools/perf/arch/arm/include/perf_regs.h #define PERF_REG_SP PERF_REG_ARM_SP PERF_REG_ARM_SP 47 tools/perf/arch/arm/include/perf_regs.h case PERF_REG_ARM_SP: PERF_REG_ARM_SP 27 tools/perf/arch/arm/tests/dwarf-unwind.c sp = (unsigned long) regs[PERF_REG_ARM_SP]; PERF_REG_ARM_SP 39 tools/perf/arch/arm/util/unwind-libunwind.c return PERF_REG_ARM_SP;