Messages in this thread | | | Subject | Re: [PATCH] Check for online cpus before bringing them up | From | Shaohua Li <> | Date | Tue, 21 Mar 2006 09:36:17 +0800 |
| |
On Mon, 2006-03-20 at 17:25 -0800, Ashok Raj wrote: > On Tue, Mar 21, 2006 at 09:08:05AM +0800, Shaohua Li wrote: > > > + > > > +#ifdef CONFIG_HOTPLUG_CPU > > > + /* > > > + * We do warm boot only on cpus that had booted earlier > > > + * Otherwise cold boot is all handled from smp_boot_cpus(). > > > + * cpu_callin_map is set during AP kickstart process. Its reset > > > + * when a cpu is taken offline from cpu_exit_clear(). > > > + */ > > > + if (!cpu_isset(cpu, cpu_callin_map)) > > > + ret = __smp_prepare_cpu(cpu); > > Does this work for boot time? cpu_callin_map isn't set at boot time for > > APs. > > > Yes, > > I tested on a 2 way system and it booted fine. This is set durng the kickstart process > when smp_callin() is called after AP receives boot ipi. Ok, thanks! It should work for suspend/resume.
Thanks, Shaohua
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |