On Thu, 2023-06-29 at 16:31 +0200, Laurent Dufour wrote: > @@ -2580,6 +2597,17 @@ static ssize_t control_show(struct device > *dev, > { > const char *state = smt_states[cpu_smt_control]; > > +#ifdef CONFIG_HOTPLUG_SMT > + /* > + * If SMT is enabled but not all threads are enabled then > show the > + * number of threads. If all threads are enabled show "on". > Otherwise > + * show the state name. > + */ > + if (cpu_smt_control == CPU_SMT_ENABLED && > + cpu_smt_num_threads != cpu_smt_max_threads) > + return sysfs_emit(buf, "%d\n", cpu_smt_num_threads); > +#endif > + My understanding is that cpu_smt_control is always set to CPU_SMT_NOT_IMPLEMENTED when CONFIG_HOTPLUG_SMT is not set, so this ifdef is not necessary, right? thanks, rui