def _initialize_llvm_lock_event():
    """Initial event triggers for LLVM lock
    """
    def enter_fn():
        event.start_event("numba:llvm_lock")

    def exit_fn():
        event.end_event("numba:llvm_lock")

    ll.ffi.register_lock_callback(enter_fn, exit_fn)
Initial event triggers for LLVM lock
    
numba/core/base.py