FETCH_OP_REG     1136 kernel/trace/trace_kprobe.c 	case FETCH_OP_REG:
FETCH_OP_REG      373 kernel/trace/trace_probe.c 			code->op = FETCH_OP_REG;
FETCH_OP_REG      227 kernel/trace/trace_uprobe.c 	case FETCH_OP_REG: