Re: Possible regression with cgroups in 3.11

[Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>]

Hello, Bjorn.

On Fri, Nov 15, 2013 at 05:28:20PM -0700, Bjorn Helgaas wrote:
> It would be better to fix PCI so we don't call VF driver .probe() methods
> from inside a PF driver .probe() method, but that's a bigger project.

Yeah, if pci doesn't need the recursion, we can simply revert restore
the lockdep annoation on work_on_cpu().

> @@ -293,7 +293,9 @@ static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev,
>  	   its local memory on the right node without any need to
>  	   change it. */
>  	node = dev_to_node(&dev->dev);
> -	if (node >= 0) {
> +	preempt_disable();
> +
> +	if (node >= 0 && node != numa_node_id()) {

A bit of comment here would be nice but yeah I think this should work.
Can you please also queue the revert of c2fda509667b ("workqueue:
allow work_on_cpu() to be called recursively") after this patch?
Please feel free to add my acked-by.

Thanks.

-- 
tejun