Function drmgr_register_kernel_xfer_event 

pub unsafe extern "C" fn drmgr_register_kernel_xfer_event(
    func: Option<unsafe extern "C" fn(drcontext: *mut c_void, info: *const dr_kernel_xfer_info_t)>,
) -> bool_

Registers a callback function for the kernel transfer event, which behaves just like DR’s kernel transfer event dr_register_kernel_xfer_event(). \return whether successful.