start_watchdog
return smp_call_function_single(cpu, start_watchdog, NULL, true);
int start_watchdog(int *in_fd_ret, int *out_fd_ret, char *sock);
err = start_watchdog(&harddog_in_fd, &harddog_out_fd, sock);
EXPORT_SYMBOL(start_watchdog);
start_watchdog(ep->dev);
start_watchdog(dev);
start_watchdog(dev);