Re: [PATCH] mm: add resched points to remap_pmd_range/ioremap_pmd_range

[Jörn Engel]

On Fri, Jul 24, 2015 at 09:04:21AM +0200, Michal Hocko wrote:
> On Thu 23-07-15 14:54:33, Spencer Baugh wrote:
> > From: Joern Engel <joern@xxxxxxxxx>
> > 
> > Mapping large memory spaces can be slow and prevent high-priority
> > realtime threads from preempting lower-priority threads for a long time.
> 
> How can a lower priority task block the high priority one? Do you have
> preemption disabled?

Yes.

Jörn

--
If you're willing to restrict the flexibility of your approach,
you can almost always do something better.
-- John Carmack
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