PERF_REG_S390_R15   15 arch/s390/kernel/perf_regs.c 	if (idx >= PERF_REG_S390_R0 && idx <= PERF_REG_S390_R15)
PERF_REG_S390_R15   15 tools/perf/arch/s390/include/perf_regs.h #define PERF_REG_SP PERF_REG_S390_R15
PERF_REG_S390_R15   50 tools/perf/arch/s390/include/perf_regs.h 	case PERF_REG_S390_R15: