> I'm still trying to understand what is going on, and my printk()s show > that this is not entirely true. > > When smp_init() is entered on mainline om imx6s, cpu_possible_mask and > cpu_present_mask both contain two cpus. These get initialized in > arm_dt_init_cpu_maps() and stay unmodified since then. > > But cpu_online() returns 1 for cpu0 and 0 from cpu1 - thus it is > cpu_online() check, not possible_mask or present_mask, that prevents > cpu1 initialization attempt.
Sorry was too quick to type. cpu_online(0) is true and cpu_online(1) is false. It is natural, since cpu0 is already running. Thus cpu_up(1) is entered! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
