Re: [PATCH -v6 2/5] Migrate shutdown/reboot to boot cpu.

[Andrew Morton]

On Wed, 24 Apr 2013 15:17:49 -0700 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> > +static void migrate_to_reboot_cpu(void)
> > +{
> > +	/* The boot cpu is always logical cpu 0 */
> > +	int reboot_cpu_id = 0;
> > +
> > +	cpu_hotplug_disable();
> > +
> > +	/* Make certain the cpu I'm about to reboot on is online */
> > +	if (!cpu_online(reboot_cpu_id))
> > +		reboot_cpu_id = cpumask_first(cpu_online_mask);
> > +
> > +	/* Prevent races with other tasks migrating this task */
> > +	current->flags |= PF_THREAD_BOUND;
> 
> PF_THREAD_BOUND was removed/replaced in linux-next's a9ab775bc
> ("workqueue: directly restore CPU affinity of workers from CPU_ONLINE")

Which means that we'll need an updated patchset for 3.10-rc1, please. 
And when Greg discovers that the patch won't backport correctly, please
provide him with the 3.9.1 version.

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