[PATCH v2 7/7] ARM: smp: Add runtime PM support for CPU hotplug

[Alan Stern]

On Fri, 4 Sep 2015, Grygorii Strashko wrote:

> There is one "small" problem with such approach :(
> 
> - It's incompatible with -RT kernel, because PM runtime can't be used
> in atomic context on -RT.

Can you explain this more fully?  Why can't runtime PM be used in 
atomic context in the -rt kernels?

Alan Stern