void select_idle_routine(const struct cpuinfo_x86 *c)
{
-#ifdef CONFIG_SMP
- if (boot_option_idle_override == IDLE_POLL && smp_num_siblings > 1)
- pr_warn_once("WARNING: polling idle and HT enabled, performance may degrade\n");
-#endif
- if (x86_idle_set() || boot_option_idle_override == IDLE_POLL)
+ if (boot_option_idle_override == IDLE_POLL) {
+ if (IS_ENABLED(CONFIG_SMP) && smp_num_siblings > 1)
+ pr_warn_once("WARNING: polling idle and HT enabled, performance may degrade\n");
+ return;
+ }
+
+ if (x86_idle_set())
return;
if (prefer_mwait_c1_over_halt(c)) {